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Karobari MI, Iqbal A, Batul R, Adil AH, Syed J, Algarni HA, Alonazi MA, Noorani TY. Exploring age and gender variations in root canal morphology of maxillary premolars in Saudi sub population: a cross-sectional CBCT study. BMC Oral Health 2024; 24:543. [PMID: 38724952 PMCID: PMC11084092 DOI: 10.1186/s12903-024-04310-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Accepted: 04/29/2024] [Indexed: 05/12/2024] Open
Abstract
BACKGROUND In complex teeth like maxillary premolars, endodontic treatment success depends on a complete comprehension of root canal anatomy. The research on mandibular premolars' root canal anatomy has been extensive and well-documented in existing literature. However, there appears to be a notable gap in available data concerning the root canal anatomy of maxillary premolars. This study aimed to explore the root canal morphology of maxillary premolars using cone-beam computed tomography (CBCT) imaging, considering age and gender variations. METHODS From 500 patient CBCT scans, 787 maxillary premolar teeth were evaluated. The sample was divided by gender and age (10-20, 21-30, 31-40, 41-50, 51-60, and 61 years and older). Ahmed et al. classification system was used to record root canal morphology. RESULTS The most frequent classifications for right maxillary 1st premolars were 2MPM1 B1 L1 (39.03%) and 1MPM1 (2.81%), while the most frequent classifications for right maxillary 2nd premolars were 2MPM1 B1 L1 (39.08%) and 1MPM1 (17.85%). Most of the premolars typically had two roots (left maxillary first premolars: 81.5%, left maxillary second premolars: 82.7%, right maxillary first premolars: 74.4%, right maxillary second premolars: 75.7%). Left and right maxillary 1st premolars for classes 1MPM1 and 1MPM1-2-1 showed significant gender differences. For classifications 1MPM1 and 1MPM1-2-1, age-related changes were seen in the left and right maxillary first premolars. CONCLUSION This study provides novel insights into the root canal anatomy of maxillary premolars within the Saudi population, addressing a notable gap in the literature specific to this demographic. Through CBCT imaging and analysis of large sample sizes, the complex and diverse nature of root canal morphology in these teeth among Saudi individuals is elucidated. The findings underscore the importance of CBCT imaging in precise treatment planning and decision-making tailored to the Saudi population. Consideration of age and gender-related variations further enhances understanding and aids in personalized endodontic interventions within this demographic.
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Affiliation(s)
- Mohmed Isaqali Karobari
- Department of Dental Research, Center for Global Health Research, Saveetha Medical College, and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India.
- Department of Restorative Dentistry & Endodontics, Faculty of Dentistry, University of Puthisastra, Phnom Penh, 12211, Cambodia.
| | - Azhar Iqbal
- Department of Restorative Dentistry, College of Dentistry, Jouf University, Sakaka, 72345, Saudi Arabia
| | - Rumesa Batul
- Department of Dental Research, Center for Global Health Research, Saveetha Medical College, and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - Abdul Habeeb Adil
- Department of Dental Research, Center for Global Health Research, Saveetha Medical College, and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India
| | - Jamaluddin Syed
- Director Research & Development, OWA Medical and Research Center, Sugarland, TX, USA
- Oral Basic and Clinical Sciences, Faculty of Dentistry, King Abdulaziz University, p.o box, Jeddah, 80209, Saudi Arabia
| | - Hmoud Ali Algarni
- Department of Restorative Dentistry, College of Dentistry, Jouf University, Sakaka, 72345, Saudi Arabia
| | - Meshal Aber Alonazi
- Department of Restorative Dentistry, College of Dentistry, Jouf University, Sakaka, 72345, Saudi Arabia
| | - Tahir Yusuf Noorani
- Conservative Dentistry Unit, School of Dental Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian, 16150, Kota Bharu, Kelantan, Malaysia
- Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, Tamil Nadu, India
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Davidson CL, de Klerk J, Matejovsky Z, Fabris-Rotelli I, Uys A. Metric evaluation of the anterior nasal spine to estimate sex and population group in South African individuals. Int J Legal Med 2024; 138:1117-1137. [PMID: 38010514 PMCID: PMC11003921 DOI: 10.1007/s00414-023-03130-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 11/12/2023] [Indexed: 11/29/2023]
Abstract
INTRODUCTION The anterior nasal spine is a pointed, midline projection of the maxilla. This bony structure dictates the overlying soft tissues providing the phenotypic features of the nose and upper lip and determines the differences in the mid-face morphology. Little data is available on the metric features of the Anterior nasal spine (ANS). This study aimed to perform metric evaluations of the ANS of white and black South African males and females to ascertain if morphological variations exist and if the differences are viable for the use in sex and population identification. MATERIALS AND METHODS The sample included 100 CBCT images for each population and sex group. Linear and angular measurements of the ANS were recorded in both the sagittal and axial planes. RESULTS Classification decision trees (pruned) were fitted to ascertain the relationship between population group, sex and the ANS measurements including and excluding age. For population group, all the ANS measurements were statistically significant for females but in males, all the ANS measurements were significant when performed individually. However, when fitted to the classification tree, Sagittal 2 did not show any statistical significance. When considering sex, only 2 of the ANS measurements (Sagittal 2 and Axial 1) were found to be significant. The results did not differ significantly when comparing the decision trees including and excluding age. CONCLUSIONS White South African individuals presented with a longer ANS that produced a more acute angle whereas black South African individuals presented with a shorter ANS and a more obtuse angle. Additionally, males presented with a longer ANS compared to females. ANS measurements were found to be more relevant for population discernment than for sex.
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Affiliation(s)
- Christy Lana Davidson
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, PO Box 1266, Pretoria, 0001, South Africa.
| | - Johan de Klerk
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, PO Box 1266, Pretoria, 0001, South Africa
| | - Zina Matejovsky
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Faculty of Health Sciences, University of Pretoria, PO Box 1266, Pretoria, 0001, South Africa
| | - Inger Fabris-Rotelli
- Department of Statistics, Faculty of Natural and Agricultural Sciences, University of Pretoria, Pretoria, South Africa
| | - Andre Uys
- Department of Anatomy, School of Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa
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Ni FD, Xu ZN, Liu MQ, Zhang MJ, Li S, Bai HL, Ding P, Fu KY. Towards clinically applicable automated mandibular canal segmentation on CBCT. J Dent 2024; 144:104931. [PMID: 38458378 DOI: 10.1016/j.jdent.2024.104931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 03/04/2024] [Accepted: 03/05/2024] [Indexed: 03/10/2024] Open
Abstract
OBJECTIVES To develop a deep learning-based system for precise, robust, and fully automated segmentation of the mandibular canal on cone beam computed tomography (CBCT) images. METHODS The system was developed on 536 CBCT scans (training set: 376, validation set: 80, testing set: 80) from one center and validated on an external dataset of 89 CBCT scans from 3 centers. Each scan was annotated using a multi-stage annotation method and refined by oral and maxillofacial radiologists. We proposed a three-step strategy for the mandibular canal segmentation: extraction of the region of interest based on 2D U-Net, global segmentation of the mandibular canal, and segmentation refinement based on 3D U-Net. RESULTS The system consistently achieved accurate mandibular canal segmentation in the internal set (Dice similarity coefficient [DSC], 0.952; intersection over union [IoU], 0.912; average symmetric surface distance [ASSD], 0.046 mm; 95% Hausdorff distance [HD95], 0.325 mm) and the external set (DSC, 0.960; IoU, 0.924; ASSD, 0.040 mm; HD95, 0.288 mm). CONCLUSIONS These results demonstrated the potential clinical application of this AI system in facilitating clinical workflows related to mandibular canal localization. CLINICAL SIGNIFICANCE Accurate delineation of the mandibular canal on CBCT images is critical for implant placement, mandibular third molar extraction, and orthognathic surgery. This AI system enables accurate segmentation across different models, which could contribute to more efficient and precise dental automation systems.
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Affiliation(s)
- Fang-Duan Ni
- Department of Oral & Maxillofacial Radiology, Peking University School & Hospital of Stomatology, Beijing 100081, China; National Center for Stomatology & National Clinical Research Center for Oral Diseases, Beijing 100081, China; National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing 100081, China; Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | | | - Mu-Qing Liu
- Department of Oral & Maxillofacial Radiology, Peking University School & Hospital of Stomatology, Beijing 100081, China; National Center for Stomatology & National Clinical Research Center for Oral Diseases, Beijing 100081, China; National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing 100081, China; Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China.
| | - Min-Juan Zhang
- Second Dental Center, Peking University Hospital of Stomatology, Beijing 100101, China
| | - Shu Li
- Department of Stomatology, Beijing Hospital, Beijing 100005, China
| | | | | | - Kai-Yuan Fu
- Department of Oral & Maxillofacial Radiology, Peking University School & Hospital of Stomatology, Beijing 100081, China; National Center for Stomatology & National Clinical Research Center for Oral Diseases, Beijing 100081, China; National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing 100081, China; Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China.
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Oliveira-Santos N, Beersingh APHA, Felizardo HMA, Groppo FC, Gaêta-Araujo H. Association between maxillary sinus floor perforation by dental implants and mucosal thickening: A cone-beam computed tomography study. J Dent 2024; 144:104963. [PMID: 38522636 DOI: 10.1016/j.jdent.2024.104963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 02/22/2024] [Accepted: 03/21/2024] [Indexed: 03/26/2024] Open
Abstract
OBJECTIVE To investigate the association of perforation of the maxillary sinus floor by dental implants with mucosal thickening and to describe its characteristics in perforated cases. STUDY DESIGN One-hundred and twenty-nine maxillary sinuses of 93 patients presenting 202 dental implants in the maxillary posterior region were retrospectively assessed in cone-beam computed tomography scans and classified according to maxillary sinus perforation, bone graft, mucosal thickening, and mucosal appearance. Logistic regression determined the chance of mucosal thickening in perforated maxillary sinuses. The chi-square test compared categorical variables between maxillary sinus perforated or not by implants and maxillary sinus with or without mucosal thickening. The significance level assumed was 5 % (α = 0.05). RESULTS There was perforation of 60 maxillary sinuses floor (46.5 %) by 74 dental implants. The chance of mucosal thickening was higher when the implant tip was trespassing on the maxillary sinus floor (p < 0.001). There was a significant association between maxillary sinus mucosal thickening and perforation by a dental implant with the tip trespassing the maxillary sinus floor (p < 0.05). CONCLUSION Maxillary sinus mucosal thickening is associated with sinus floor perforation by dental implants and does not depend on the number of implants perforating it. CLINICAL RELEVANCE There is an association between dental implants' perforation of the maxillary sinus floor and the thickening of the maxillary sinus. In those cases, the appearance of the mucosa thickening may be irregular, local, or total opacification of the sinus cavity.
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Affiliation(s)
- Nicolly Oliveira-Santos
- Department of Oral Surgery and Stomatology, Division of Oral Diagnostic Sciences, School of Dental Medicine, University of Bern, Bern, Switzerland; Department of Oral Diagnosis, Piracicaba Dental School, Universidade Estadual de Campinas (UNICAMP), Piracicaba, Sao Paulo, Brazil.
| | | | | | - Francisco Carlos Groppo
- Department of Biosciences, Piracicaba Dental School, Universidade Estadual de Campinas (UNICAMP), Piracicaba, São Paulo, Brazil
| | - Hugo Gaêta-Araujo
- Department of Stomatology, Public Health, and Forensic Dentistry, Division of Oral Radiology, School of Dentistry of Ribeirao Preto, University of Sao Paulo (USP), Ribeirao Preto, Sao Paulo, Brazil
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Zhang Y, Yu F, Long X, Fang W. Imaging features of temporomandibular joint synovial chondromatosis with associated osseous degenerative changes. Int J Oral Maxillofac Surg 2024; 53:311-318. [PMID: 37840000 DOI: 10.1016/j.ijom.2023.09.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 09/26/2023] [Accepted: 09/27/2023] [Indexed: 10/17/2023]
Abstract
Synovial chondromatosis (SC) of the temporomandibular joint (TMJ) is a rare benign disease associated with the formation of multiple cartilaginous nodules in the synovial tissue of the TMJ. This can result in pain, swelling, clicking, limited mouth opening, and osseous degenerative joint changes. A retrospective cross-sectional study was performed to summarize the clinical features, radiographic findings, and surgical and histopathological findings of TMJ SC patients who underwent open surgery over a 24-year period. A radiographic scoring system was used to evaluate osseous changes and correlate condyle and joint fossa degeneration. The study included 38 patients and focused on 38 joints. All 38 of these joints showed degenerative changes in the condyle, while 37 showed osseous degenerative changes in the articular fossa. The degree of condylar degenerative changes was related to the duration of the chief complaints (r = 0.342, P = 0.036) and the histopathological stage of the TMJ SC (r = 0.440, P = 0.006), while the degree of joint fossa degenerative changes was associated with the radiographic extent of the SC (r = 0.504, P = 0.001), type of calcification (r = 0.365, P = 0.024), and the histopathological stage (r = 0.458, P = 0.004).
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Affiliation(s)
- Y Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China; Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Shandong Key Laboratory of Oral Tissue Regeneration, and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, Shandong, China
| | - F Yu
- Department of Pathology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - X Long
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China; Department of Oral and Maxillofacial Trauma and Temporomandibular Joint Surgery, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China
| | - W Fang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China; Department of Oral and Maxillofacial Trauma and Temporomandibular Joint Surgery, School and Hospital of Stomatology, Wuhan University, Wuhan, Hubei, China.
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Duyan Yüksel H, Soydan Çabuk D, Coşgunarslan A. The evaluation of superior semicircular canal in patients with unilateral cleft lip and palate using CBCT. Oral Radiol 2024; 40:269-276. [PMID: 38184496 DOI: 10.1007/s11282-023-00733-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 12/04/2023] [Indexed: 01/08/2024]
Abstract
OBJECTIVES The present study aims to evaluate the thickness and radiological patterns of the superior semicircular canal (SSC) in patients with unilateral cleft lip and palate (CL/P). METHODS Cone beam computed tomography (CBCT) images of the patients were evaluated in axial and Pöschl planes. CBCT images of 84 patients with unilateral CL/P and 168 healthy individual controls were included in the study. Three study groups were established: the CS-CL/P group (cleft side temporal bones of the CL/P patients), NCS-CL/P (non-cleft side temporal bones of the CL/P patients) and the control group. The radiological patterns of SSCs were categorized as dehiscence, papyraceous, normal, pneumatised and thick. The minimum bone thickness of SSC was measured. RESULTS It was found that the CS-CL/P group had a higher prevalence for SSCD compared to both the NCS-CL/P group and the control group. CS-CL/P group had a higher prevalence of dehiscence type and papyraceous type compared to the control group. The SSC thickness on the CS-CL/P patients was thinner than the NCS-CL/P patients and the control group sides (p = 0.033 and p < 0.001, respectively). CONCLUSIONS The mean thickness of SSC was found significantly lower in the CS-CL/P group compared to both the NCS-CL/P group and the control group. The elevated prevalence of dehiscence and papyraceous types in the CS-C/LP group compared to the control group implies that the presence of a cleft may be a predisposing factor for these types.
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Affiliation(s)
- Hazal Duyan Yüksel
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Çukurova University, Adana, Türkiye.
| | - Damla Soydan Çabuk
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Çukurova University, Adana, Türkiye
| | - Aykağan Coşgunarslan
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Erciyes University, Kayseri, Türkiye
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Biel P, Jurt A, Chappuis V, Suter VGA. Incidental findings in cone beam computed tomography (CBCT) scans for implant treatment planning: a retrospective study of 404 CBCT scans. Oral Radiol 2024; 40:207-218. [PMID: 38102453 DOI: 10.1007/s11282-023-00723-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 11/02/2023] [Indexed: 12/17/2023]
Abstract
OBJECTIVES To investigate the prevalence of incidental findings and need for further dental treatment and analyse the influence of size of field-of-view (FOV) and age in cone beam computed tomography (CBCT) for pre-implant planning. METHODS 404 CBCT scans were examined retrospectively for incidental findings and need for further dental treatment. Incidental finding-frequencies and need for further treatment were assessed for different age (< 40 years, 40-60 years, > 60 years) and FOV groups (small, medium, large). Intraexaminer and interexaminer agreements were evaluated. RESULTS In 82% of the scans at least one incidental finding was found, with a total of 766 overall. More incidental findings were found in scans with large FOV (98% vs. 72%, OR = 22.39 large vs. small FOV, p < 0.0001) and in scans of patients > 60 years (OR = 5.37 patient's age > 60 years vs. < 40 years, p = 0.0003). Further dental treatment due to incidental findings was needed in 31%. Scans with large FOV were more likely to entail further treatment (OR = 3.55 large vs. small FOV, p < 0.0001). Partial edentulism and large FOV were identified as risk factors for further treatment (p = 0.0003 and p < 0.0001). Further referral of the patient based on incidental findings was judged as indicated in 5%. Intra- and inter-examiner agreements were excellent (kappa = 0.944/0.805). CONCLUSIONS A considerable number of incidental findings with need for further dental treatment was found in partially edentulous patients and in patients > 60 years. In pre-implant planning of elderly patients, the selection of large FOV CBCT scans, including dentoalveolar regions not X-rayed recently, help to detect therapeutically relevant incidental findings.
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Affiliation(s)
- Philippe Biel
- Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Freiburgstrasse 7, CH-3010, Bern, Switzerland
| | - Alice Jurt
- Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Freiburgstrasse 7, CH-3010, Bern, Switzerland
| | - Vivianne Chappuis
- Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Freiburgstrasse 7, CH-3010, Bern, Switzerland
| | - Valerie G A Suter
- Department of Oral Surgery and Stomatology, School of Dental Medicine, University of Bern, Freiburgstrasse 7, CH-3010, Bern, Switzerland.
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ElShennawy EM, Hamed WM, Samir SM. Diagnostic accuracy of MRI-CBCT fused images in assessment of clinically diagnosed internal derangement of the temporomandibular joint. Oral Radiol 2024; 40:226-233. [PMID: 38231306 DOI: 10.1007/s11282-023-00727-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 11/14/2023] [Indexed: 01/18/2024]
Abstract
OBJECTIVES To evaluate the diagnostic accuracy of Fused (MRI)-CBCT images in the assessment of internal derangement of the temporomandibular joint. METHODS MRI and CBCT images of the TMJ were evaluated bilaterally in 10 patients with clinically diagnosed internal derangement. Image fusion was performed using Amira 3D Software (version 5.4.3, Thermo Fisher Scientific Inc.). RESULTS The AUC index for MRI-CBCT fused images was 0.83, which was significantly different from the null hypothesis value of 0.5. This was confirmed by inter-examiner reliability index of 0.87, which is statistically significant. CONCLUSION MRI-CBCT fused images can significantly improve the accuracy and inter-examiner reliability in the evaluation of clinically diagnosed cases with internal derangement.
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Affiliation(s)
- Ethar M ElShennawy
- Oral and Maxillofacial Radiology Department, Faculty of Dentistry, Ain Shams University, Cairo, Egypt.
| | - Walaa M Hamed
- Oral and Maxillofacial Radiology Department, Faculty of Dentistry, Ain Shams University, Cairo, Egypt
| | - Sahar M Samir
- Oral and Maxillofacial Radiology Department, Faculty of Dentistry, Ain Shams University, Cairo, Egypt
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Esmaeilyfard R, Bonyadifard H, Paknahad M. Dental Caries Detection and Classification in CBCT Images Using Deep Learning. Int Dent J 2024; 74:328-334. [PMID: 37940474 PMCID: PMC10988262 DOI: 10.1016/j.identj.2023.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 09/24/2023] [Accepted: 10/09/2023] [Indexed: 11/10/2023] Open
Abstract
OBJECTIVES This study aimed to investigate the accuracy of deep learning algorithms to diagnose tooth caries and classify the extension and location of dental caries in cone beam computed tomography (CBCT) images. To the best of our knowledge, this is the first study to evaluate the application of deep learning for dental caries in CBCT images. METHODS The CBCT image dataset comprised 382 molar teeth with caries and 403 noncarious molar cases. The dataset was divided into a development set for training and validation and test set. Three images were obtained for each case, including axial, sagittal, and coronal. The test dataset was provided to a multiple-input convolutional neural network (CNN). The network made predictions regarding the presence or absence of dental decay and classified the lesions according to their depths and types for the provided samples. Accuracy, sensitivity, specificity, and F1 score values were measured for dental caries detection and classification. RESULTS The diagnostic accuracy, sensitivity, specificity, and F1 score for caries detection in carious molar teeth were 95.3%, 92.1%, 96.3%, and 93.2%, respectively, and for noncarious molar teeth were 94.8%, 94.3%, 95.8%, and 94.6%. The CNN network showed high sensitivity, specificity, and accuracy in classifying caries extensions and locations. CONCLUSIONS This research demonstrates that deep learning models can accurately identify dental caries and classify their depths and types with high accuracy, sensitivity, and specificity. The successful application of deep learning in this field will undoubtedly assist dental practitioners and patients in improving diagnostic and treatment planning in dentistry. CLINICAL SIGNIFICANCE This study showed that deep learning can accurately detect and classify dental caries. Deep learning can provide dental caries detection accurately. Considering the shortage of dentists in certain areas, using CNNs can lead to broader geographic coverage in detecting dental caries.
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Affiliation(s)
- Rasool Esmaeilyfard
- Department of Computer Engineering and Information Technology, Shiraz University of Technology, Shiraz, Iran
| | - Haniyeh Bonyadifard
- Department of Computer Engineering and Information Technology, Shiraz University of Technology, Shiraz, Iran
| | - Maryam Paknahad
- Oral, and Dental Disease Research Center, Oral and Maxillofacial Radiology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
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Vasiljkovic BM, Antic S, Pficer JK, Djokic D. Predictors of complications associated with unerupted maxillary canines: a cone beam computed tomography study. Odontology 2024; 112:526-536. [PMID: 37644295 DOI: 10.1007/s10266-023-00844-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 08/01/2023] [Indexed: 08/31/2023]
Abstract
To detect predictive factors for the occurrence of complications associated with unerupted maxillary canines (C). A total of 83 cone beam computed tomograms (CBCT), made from November 1, 2021 to October 31, 2022, have met the inclusion criteria, whereby 110 unerupted C were detected. Independent variables were: gender, age, and C position. Outcome variables were detected complications: external root resorption (ERR) and dilaceration of adjacent tooth, ERR and dilaceration of C, dentigerous cyst, canine ankylosis, and adjacent teeth malposition. Chi-square test and logistic regression analysis were used to examine the relationship between income variables and detected complications. Vertical position of unerupted C showed as predictor for adjacent tooth dilacerations and malposition. Chance for dilaceration increases 5.5-fold with C position at the middle third of lateral incisor (LI) root, while chance of malposition increases 23.4-fold with its supra-apical position to the LI root, in comparison to the C position occlusal to the LI cemento-enamel junction. Age is a predictive factor for dentigerous cysts, with decreasing the chance of their occurrence 1.5-fold with each additional year of age. Early evaluation of the vertical position and timely treatment of C are decisive steps in preventing complications.
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Affiliation(s)
| | - Svetlana Antic
- Stomatoloski Fakultet Univerzitet u Beogradu, Belgrade, Serbia
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Aljawhar AM, Ibrahim N, Abdul Aziz A, Ahmed HMA, Azami NH. Characterization of the root and canal anatomy of maxillary premolar teeth in an Iraqi subpopulation: a cone beam computed tomography study. Odontology 2024; 112:570-587. [PMID: 37957521 DOI: 10.1007/s10266-023-00870-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 10/24/2023] [Indexed: 11/15/2023]
Abstract
This study aims to evaluate the number of roots and root canal morphology types of maxillary premolars in relation to a patient's gender and age in an Iraqi population using two classification systems. Cone beam computed tomography (CBCT) scans of 1116 maxillary premolars from 385 patients were evaluated for the number of roots and root canal morphology types according to Vertucci's classification and Ahmed et al. classification systems. Differences in the number of roots and root canal morphology types with regard to tooth type, patients' gender and age groups were evaluated and the degree of bilateral symmetry was determined. Chi-squared test was used for statistical analysis. About 51.1% of the 1st premolars were double rooted. The majority (87.9%) of the 2nd premolars were single rooted. The three-rooted form presented in only 1.2% and 0.7% of the 1st and 2nd premolars, respectively. Vertucci Type IV (Ahmed et al. code 2MaxP B1P1) and Vertucci Type I (Ahmed et al. code 1MaxP1) were the most common canal morphology types in the 1st and 2nd premolars, respectively. Females showed a lower number of roots and a higher prevalence of Vertucci Type I configuration (P < 0.05). Younger age groups showed a higher prevalence of Vertucci Type I configuration (P < 0.05). Bilateral symmetry was seen in more than half of the maxillary premolars. There is a considerable variation in the number of roots and root canal configurations of maxillary premolars in the studied Iraqi population, with a significant difference by gender and age groups. Ahmed et al. classification provided more accurate presentation of the root and canal anatomy in maxillary premolars compared to Vertucci's classification.
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Affiliation(s)
- Abdullah Mohammed Aljawhar
- Department of Restorative and Aesthetic Dentistry, College of Dentistry, University of Basrah, Basrah, Iraq
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Norliza Ibrahim
- Department of Oral & Maxillofacial Clinical Science, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia
| | - Azwatee Abdul Aziz
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Hany Mohamed Aly Ahmed
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Noor Hayati Azami
- Department of Restorative Dentistry, Faculty of Dentistry, University of Malaya, 50603, Kuala Lumpur, Malaysia.
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Sırlı Yılmazturk S, Bozdemir E, Orhan K, Orhan H. Evaluation of morphological and morphometric characteristics of the temporomandibular joint in children with different skeletal models in the sagittal and vertical direction. Oral Radiol 2024; 40:178-187. [PMID: 38010496 DOI: 10.1007/s11282-023-00718-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Accepted: 10/27/2023] [Indexed: 11/29/2023]
Abstract
OBJECTIVE This study aims to evaluate differences in the morphological and morphometric features of hard tissue components of the temporomandibular joint (TMJ) in the cone beam computed tomography (CBCT) images of children with different skeletal models in the sagittal and vertical plane. METHODS Condyle dimensions, horizontal condylar angle, the distance of the condyle center to the midsagittal plane, condyle position, eminence height, eminence inclination, condyle, and fossa shape and symmetry were evaluated in CBCT images in 190 TMJs in 95 pediatric patients. Patients were classified as Class 1-2-3 in the sagittal direction, as hypodivergent, normodivergent, and hyperdivergent in the vertical direction. Children were divided into 10-13 and 14-17 age groups. RESULTS The left superior joint space in children with a different skeletal model in the sagittal plane was lower and found to be statistically significant in Class 3 children (p < 0.05). A statistically significant difference was found lower in the left articular eminence inclination and height in Class 3 children (p < 0.05). The most common oval fossa form was seen in Classes 2-3 children (p < 0.05). It was determined that the anterior joint space was lower in hyperdivergent children and the condyle was located more anteriorly. The mediolateral length of the condyle and the height of the articular eminence were positively correlated with age. CONCLUSIONS The results revealed that the difference in skeletal models seen in sagittal and vertical planes in children may cause morphological and morphometric changes in the hard tissue components of TMJ.
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Affiliation(s)
- Sinem Sırlı Yılmazturk
- Likyadent Oral and Dental Health Polyclinic, Taşyaka Mh.137.Sk. No:14 D.1-2 Fethiye, Muğla, Turkey.
| | - Esin Bozdemir
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Suleyman Demirel University, Isparta, Turkey
| | - Kaan Orhan
- Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Ankara University, Ankara, Turkey
| | - Hikmet Orhan
- Department of Biostatistics and Medical Informatics, Faculty of Medicine, Suleyman Demirel University, Isparta, Turkey
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Duman ŞB, Çelik Özen D, Bayrakdar IŞ, Baydar O, Alhaija ESA, Helvacioğlu Yiğit D, Çelik Ö, Jagtap R, Pileggi R, Orhan K. Second mesiobuccal canal segmentation with YOLOv5 architecture using cone beam computed tomography images. Odontology 2024; 112:552-561. [PMID: 37907818 DOI: 10.1007/s10266-023-00864-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 10/03/2023] [Indexed: 11/02/2023]
Abstract
The objective of this study is to use a deep-learning model based on CNN architecture to detect the second mesiobuccal (MB2) canals, which are seen as a variation in maxillary molars root canals. In the current study, 922 axial sections from 153 patients' cone beam computed tomography (CBCT) images were used. The segmentation method was employed to identify the MB2 canals in maxillary molars that had not previously had endodontic treatment. Labeled images were divided into training (80%), validation (10%) and testing (10%) groups. The artificial intelligence (AI) model was trained using the You Only Look Once v5 (YOLOv5x) architecture with 500 epochs and a learning rate of 0.01. Confusion matrix and receiver-operating characteristic (ROC) analysis were used in the statistical evaluation of the results. The sensitivity of the MB2 canal segmentation model was 0.92, the precision was 0.83, and the F1 score value was 0.87. The area under the curve (AUC) in the ROC graph of the model was 0.84. The mAP value at 0.5 inter-over union (IoU) was found as 0.88. The deep-learning algorithm used showed a high success in the detection of the MB2 canal. The success of the endodontic treatment can be increased and clinicians' time can be preserved using the newly created artificial intelligence-based models to identify variations in root canal anatomy before the treatment.
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Affiliation(s)
- Şuayip Burak Duman
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Inonu University Malatya, Malatya, Turkey.
| | - Duygu Çelik Özen
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Inonu University Malatya, Malatya, Turkey
| | - Ibrahim Şevki Bayrakdar
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Eskişehir Osmangazi University, Eskişehir, Turkey
| | - Oğuzhan Baydar
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Ege University İzmir, İzmir, Turkey
| | | | | | - Özer Çelik
- Department of Mathematics-Computer, Faculty of Science, Eskişehir Osmangazi University, Eskişehir, Turkey
| | - Rohan Jagtap
- Division of Oral and Maxillofacial Radiology, Department of Care Planning and Restorative Sciences, Medical Center School of Dentistry, University of Mississippi, Jackson, MS, USA
| | - Roberta Pileggi
- Department of Endodontics, College of Dentistry, University of Florida, Florida, USA
| | - Kaan Orhan
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Ankara University, Ankara, Turkey
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Apaydın BK, Icoz D, Uzun E, Orhan K. Investigation of the relationship between the mandibular third molar teeth and the inferior alveolar nerve using posteroanterior radiographs: a pilot study. BMC Oral Health 2024; 24:371. [PMID: 38519914 PMCID: PMC10958910 DOI: 10.1186/s12903-024-04123-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 03/07/2024] [Indexed: 03/25/2024] Open
Abstract
BACKGROUND The most severe complication that can occur after mandibular third molar (MM3) surgery is inferior alveolar nerve (IAN) damage. It is crucial to have a comprehensive radiographic evaluation to reduce the possibility of nerve damage. The objective of this study is to assess the diagnostic accuracy of panoramic radiographs (PR) and posteroanterior (PA) radiographs in identifying the association between impacted MM3 roots and IAN. METHODS This study included individuals who had PR, PA radiographs, and cone beam computed tomography (CBCT) and who had at least one impacted MM3. A total of 141 impacted MM3s were evaluated on CBCT images, and the findings were considered gold standard. The relationship between impacted MM3 roots and IAN was also evaluated on PR and PA radiographies. The data was analyzed using the McNemar and Chi-squared tests. The sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and diagnostic accuracy of PR and PA radiographies were determined. RESULTS Considering CBCT the gold standard, the relationship between MM3 roots and IAN was found to be statistically significant between PR and CBCT (p = 0.00). However, there was no statistically significant relationship between PA radiography and CBCT (0.227). The study revealed that the most prevalent limitation of the PR in assessing the relationship between MM3 roots and IAN was the identification of false-positive relationship. CONCLUSIONS PA radiography may be a good alternative in developing countries to find out if there is a contact between MM3 roots and IAN because it is easier to get to, cheaper, and uses less radiation.
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Affiliation(s)
- Burak Kerem Apaydın
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Pamukkale University, Denizli, 20160, Turkey.
| | - Derya Icoz
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Selcuk University, Konya, 42100, Turkey
| | - Ezgi Uzun
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Pamukkale University, Denizli, 20160, Turkey
| | - Kaan Orhan
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Ankara University, Ankara, 06500, Turkey
- Medical Design Application and Research Center (MEDITAM), Ankara University, Ankara, 06500, Turkey
- Department of Oral Diagnostics, Faculty of Dentistry, Semmelweis University, Budapest, Hungary
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Calazans MAA, Pontual ADA, Pontual MLDA, Ferreira FABS, Santos A, Alcoforado MDLMG, Ramos-Perez FMDM, Madeiro F. A system for automatic classification of endodontic treatment quality in CBCT. Clin Oral Investig 2024; 28:223. [PMID: 38507031 DOI: 10.1007/s00784-024-05599-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 03/02/2024] [Indexed: 03/22/2024]
Abstract
OBJECTIVES An evaluation of the effectiveness of a new computational system proposed for automatic classification, developed based on a Siamese network combined with Convolutional Neural Networks (CNNs), is presented. It aims to identify endodontic technical errors using Cone Beam Computed Tomography (CBCT). The study also aims to compare the performance of the automatic classification system with that of dentists. METHODS One thousand endodontically treated maxillary molars sagittal and coronal reconstructions were evaluated for the quality of the endodontic treatment and the presence of periapical hypodensities by three board-certified dentists and by an oral and maxillofacial radiologist. The proposed classification system was based on a Siamese network combined with EfficientNet B1 or EfficientNet B7 networks. Accuracy, sensivity, precision, specificity, and F1-score values were calculated for automated artificial systems and dentists. Chi-square tests were performed. RESULTS The performances were obtained for EfficienteNet B1, EfficientNet B7 and dentists. Regarding accuracy, sensivity and specificity, the best results were obtained with EfficientNet B1. Concerning precision and F1-score, the best results were obtained with EfficientNet B7. The presence of periapical hypodensity lesions was associated with endodontic technical errors. In contrast, the absence of endodontic technical errors was associated with the absence of hypodensity. CONCLUSIONS Quality evaluation of the endodontic treatment performed by dentists and by Siamese Network combined with EfficientNet B7 or EfficientNet B1 networks was comparable with a slight superiority for the Siamese Network. CLINICAL RELEVANCE CNNs have the potential to be used as a support and standardization tool in assessing endodontic treatment quality in clinical practice.
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Affiliation(s)
| | - Andréa Dos Anjos Pontual
- Departamento de Clínica e Odontologia Preventiva, Universidade Federal de Pernambuco, Recife, 50670-420, Pernambuco, Brasil
| | - Maria Luíza Dos Anjos Pontual
- Departamento de Clínica e Odontologia Preventiva, Universidade Federal de Pernambuco, Recife, 50670-420, Pernambuco, Brasil
| | - Felipe Alberto B S Ferreira
- Unidade Acadêmica do Cabo de Santo Agostinho, Universidade Federal Rural de Pernambuco, Cabo de Santo Agostinho, 54518-430, Pernambuco, Brasil
| | - Andrezza Santos
- Departamento de Clínica e Odontologia Preventiva, Universidade Federal de Pernambuco, Recife, 50670-420, Pernambuco, Brasil
| | | | | | - Francisco Madeiro
- Escola Politécnica de Pernambuco, Universidade de Pernambuco, Recife, 50720-001, Pernambuco, Brasil
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Mansuy C, Saliba-Serre B, Ruquet M, Raskin A, Hüe O, Silvestri F, Mense C. Assessment of bone density in edentulous maxillae using cone beam computed tomography (CBCT). J Stomatol Oral Maxillofac Surg 2024:101825. [PMID: 38499148 DOI: 10.1016/j.jormas.2024.101825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 02/16/2024] [Accepted: 03/07/2024] [Indexed: 03/20/2024]
Abstract
INTRODUCTION In edentulous maxillae, the anterior maxilla is the region of interest for implant placement due to posterior bone resorption and sinus pneumatization. This study aimed to assess variations in bone density in different regions of the edentulous maxilla according to sex and age, using cone beam computed tomography (CBCT). MATERIALS AND METHODS 69 CBCT from edentulous maxilla were analyzed. Six virtual implants were planned between the maxillary sinuses at incisor, canine, and premolar sites. Bone densities (in Hounsfield units HU) were recorded at six points on the neck, body, and apex of the buccal and lingual areas of each virtual implant. We used the two-sample t-test to compare male and female bone densities, and the Spearman correlation coefficient to analyze the correlation between mean bone density and age. One-way analysis of variance with post hoc pairwise t-tests was used to analyze the differences in density between three sites of the edentulous maxilla and the differences in density between three parts of the implant. The significance level was set at 5%. RESULTS Mean bone density in males was significantly higher than in females. There was a significant correlation between mean bone density and age in females. Incisor sites showed the highest mean bone density, followed by canine and premolar sites. There was a significant decline in bone density from the neck to the apex. CONCLUSIONS Bone density varied within and among edentulous maxillae. Bone density of the edentulous maxilla seemed to be influenced by age in women and by sex.
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Affiliation(s)
- Charlotte Mansuy
- CNRS, EFS, ADES, Aix-Marseille Université, Marseille, France; Faculté des Sciences Médicales et Paramédicales, Ecole de Médecine Dentaire, Aix-Marseille Université, Marseille, France; Assistance Publique des Hôpitaux de Marseille, Pôle PROMOD Odontologie, Service de Réhabilitations Orales, Marseille, France.
| | | | - Michel Ruquet
- CNRS, EFS, ADES, Aix-Marseille Université, Marseille, France; Faculté des Sciences Médicales et Paramédicales, Ecole de Médecine Dentaire, Aix-Marseille Université, Marseille, France; Assistance Publique des Hôpitaux de Marseille, Pôle PROMOD Odontologie, Service de Réhabilitations Orales, Marseille, France
| | - Anne Raskin
- CNRS, EFS, ADES, Aix-Marseille Université, Marseille, France; Faculté des Sciences Médicales et Paramédicales, Ecole de Médecine Dentaire, Aix-Marseille Université, Marseille, France; Assistance Publique des Hôpitaux de Marseille, Pôle PROMOD Odontologie, Service de Réhabilitations Orales, Marseille, France
| | - Olivier Hüe
- CNRS, EFS, ADES, Aix-Marseille Université, Marseille, France; Faculté des Sciences Médicales et Paramédicales, Ecole de Médecine Dentaire, Aix-Marseille Université, Marseille, France
| | - Frédéric Silvestri
- CNRS, EFS, ADES, Aix-Marseille Université, Marseille, France; Faculté des Sciences Médicales et Paramédicales, Ecole de Médecine Dentaire, Aix-Marseille Université, Marseille, France; Assistance Publique des Hôpitaux de Marseille, Pôle PROMOD Odontologie, Service de Réhabilitations Orales, Marseille, France
| | - Chloé Mense
- CNRS, EFS, ADES, Aix-Marseille Université, Marseille, France; Faculté des Sciences Médicales et Paramédicales, Ecole de Médecine Dentaire, Aix-Marseille Université, Marseille, France; Assistance Publique des Hôpitaux de Marseille, Pôle PROMOD Odontologie, Service de Réhabilitations Orales, Marseille, France
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Steiniger B, Fiebich M, Grimm MO, Malouhi A, Reichenbach JR, Scheithauer M, Teichgräber U, Franiel T. PAE planning: Radiation exposure and image quality of CT and CBCT. Eur J Radiol 2024; 172:111329. [PMID: 38278010 DOI: 10.1016/j.ejrad.2024.111329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 01/10/2024] [Accepted: 01/18/2024] [Indexed: 01/28/2024]
Abstract
PURPOSE To determine accurate organ doses, effective doses, and image quality of computed tomography (CT) compared with cone beam CT (CBCT) for correct identification of prostatic arteries. METHOD A dual-energy CT scanner and a flat-panel angiography system were used. Dose measurements (gallbladder (g), intestine (i), bladder (b), prostate (p), testes (t), active bone marrow of pelvis (bmp) and femura (bmf)) were performed using an anthropomorphic phantom with 65 thermoluminescent dosimeters in the pelvis and abdomen region. For the calculation of the contrast-to-noise ratio (CNR) of the pelvic arteries, a patient whose weight and height were almost identical to those of the phantom was selected for each examination type. RESULTS The effective dose of CT was 2.7 mSv and that of CBCT was 21.8 mSv. Phantom organ doses were lower for CT than for CBCT in all organs except the testes (g: 1.2 mGy vs. 3.3 mGy, i: 5.8 mGy vs. 23.9 mGy, b: 6.9 mGy vs. 19.4 mGy, p: 6.4 mGy vs. 13.2 mGy, t: 4.7 mGy vs. 2.4 mGy, bmp: 5.1 mGy vs. 18.2 mGy, bmf: 3.3 mGy vs. 6.6 mGy). For human pelvic arteries, the CNR of CT was better than that of CBCT, with the exception of one prostate artery that showed stenosis on CT. Evaluation by experienced radiologists also confirmed the better detectability of prostate arteries on CT examination. CONCLUSIONS In our study preprocedural CT had lower organ doses and better image quality comparedd with CBCT and should be considered for the correct identification of prostatic arteries.
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Affiliation(s)
- Beatrice Steiniger
- Department of Diagnostic and Interventional Radiology, University Hospital, Am Klinikum 1, 07747 Jena, Germany.
| | - Martin Fiebich
- Department LSE, Technische Hochschule Mittelhessen, Wiesenstraße 14, 35390 Gießen, Germany
| | - Marc-Oliver Grimm
- Clinic for Urology, University Hospital, Am Klinikum 1, 07747 Jena, Germany
| | - Amer Malouhi
- Department of Diagnostic and Interventional Radiology, University Hospital, Am Klinikum 1, 07747 Jena, Germany
| | - Jürgen R Reichenbach
- Medical Physics Group, Department of Diagnostic and Interventional Radiology, University Hospital, Am Klinikum 1, 07747 Jena, Germany
| | - Marcel Scheithauer
- Stabsstelle Strahlenschutz, University Hospital, Am Klinikum 1, 07747 Jena, Germany
| | - Ulf Teichgräber
- Department of Diagnostic and Interventional Radiology, University Hospital, Am Klinikum 1, 07747 Jena, Germany
| | - Tobias Franiel
- Department of Diagnostic and Interventional Radiology, University Hospital, Am Klinikum 1, 07747 Jena, Germany
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Polat Y, Çelenk S. A comparison of estimated age based on pulp volume from cone beam computed tomography (CT) images and panoramic radiography data with chronological age. J Clin Pediatr Dent 2024; 48:149-162. [PMID: 38548645 DOI: 10.22514/jocpd.2024.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 11/29/2023] [Indexed: 04/02/2024] Open
Abstract
This retrospective study was conducted to evaluate different methods for dental age estimation in children and to examine the feasibility of using cone beam computed tomography (CBCT) data for age estimation. A total of 200 radiographic records (both digital panoramic radiographs and CBCTs) were acquired from 100 children aged 9 to 16 years, all taken on the same dates. Radiographic data was acquired from archived records and included both panoramic radiography and CBCT data belonging to the same individual. CBCT was used when panoramic radiographic data was insufficient. The pulp volume and pulp/tooth volume ratio of the left first molar teeth in the mandible were calculated from the CBCT data using MIMICS software. In addition, age was estimated by the Demirjian and Willems methods from data obtained from panoramic radiography images. Statistical analyses and linear regression analysis were performed as necessary. There was a statistically significant difference between the mean difference between the Demirjian method and chronological age, and between the Willems method and chronological age (p < 0.001). Statistically significance was achieved in a linear regression model created from pulp volume (R2 = 0.098) and pulp/tooth volume ratio (R2 = 0.395) data for the estimated dental age analysis (p < 0.001) and a negative correlation was observed with chronological age. When compared estimated dental age from CBCT data with chronological age, the pulp/tooth volume ratio method yielded results closer to chronological age than using only pulp volume data. When considering both panoramic radiographic age estimation methods and age estimation methods using CBCT data, we found that the results obtained with the Willems method, a panoramic radiographic age estimation technique, provided the closest results to the chronological age. More contributions should be made to the literature regarding the feasibility of age estimation using pulp and tooth volume as an alternative method.
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Affiliation(s)
- Yelda Polat
- Department of Pediatric Dentistry, Faculty of Dentistry, Dicle University, 21280 Diyarbakır, Turkey
| | - Sema Çelenk
- Department of Pediatric Dentistry, Faculty of Dentistry, Dicle University, 21280 Diyarbakır, Turkey
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Ho Nguyen CT, Bui MH, Lam PH. Residual calcified material volume of β-tricalcium phosphate with platelet-rich fibrin in unilateral alveolar bone graft. Maxillofac Plast Reconstr Surg 2024; 46:7. [PMID: 38427143 PMCID: PMC10907557 DOI: 10.1186/s40902-024-00420-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 02/21/2024] [Indexed: 03/02/2024] Open
Abstract
BACKGROUND This study aimed to evaluate the effectiveness of β-tricalcium phosphate (β-TCP) and platelet-rich fibrin (PRF) in unilateral alveolar bone graft, involving the percentage of residual calcified material and the average labiopalatal thickness of the grafts on cone beam computed tomography at 6 months after surgery, comparing two age groups 12 years and under and over 12 years old. RESULTS The mean preoperative defect volume was 0.93 ± 0.20 cm3, with no significant difference between the two groups (p = 0.652). In the postoperative period, we did not record any abnormal bleeding and no infection was observed. Six months after surgery, the mean percentage of residual calcified material was 63.53 ± 16.48% with a significantly higher difference in the age group 12 and under (p < 0.001), and the mean average labiopalatal thickness of the grafted bone was 5.72 ± 1.09 mm with a significantly higher difference in the age group 12 and under (p = 0.011). CONCLUSION Using β-TCP and PRF in alveolar bone graft surgery has acceptable effectiveness clinically and on CBCT images, with significantly higher differences of the percentage of residual calcified material and the average labiopalatal thickness of the grafted bone in the group 12 years old and younger than in the older group.
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Affiliation(s)
- Chon T Ho Nguyen
- Department of Maxillofacial Surgery, Faculty of Odonto-Stomatology, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, 700000, Vietnam.
| | - Minh H Bui
- Department of Maxillofacial Surgery, National Hospital of Odonto-Stomatology Ho Chi Minh City, Ho Chi Minh City, 700000, Vietnam
| | - Phuong H Lam
- My Thien Odonto-Stomatology Hospital, Ho Chi Minh City, 700000, Vietnam
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Shi X, Sutherland K, Lobbezoo F, Berkhout E, de Lange J, Cistulli PA, Darendeliler MA, Dalci O, Aarab G. Upper airway morphology in adults with positional obstructive sleep apnea. Sleep Breath 2024; 28:193-201. [PMID: 37466758 PMCID: PMC10954840 DOI: 10.1007/s11325-023-02879-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 06/19/2023] [Accepted: 06/23/2023] [Indexed: 07/20/2023]
Abstract
PURPOSE To compare the anatomical balance and shape of the upper airway in the supine position between adults with positional obstructive sleep apnea (POSA) and adults with non-positional OSA (NPOSA). METHODS Adults diagnosed with OSA (apnea-hypopnea index (AHI) > 10 events/h) were assessed for eligibility. POSA was defined as the supine AHI more than twice the AHI in non-supine positions; otherwise, patients were classified as NPOSA. Cone beam computed tomography (CBCT) imaging was performed for every participant while awake in the supine position. The anatomical balance was calculated as the ratio of the tongue size to the maxillomandibular enclosure size. The upper airway shape was calculated as the ratio of the anteroposterior dimension to the lateral dimension at the location of the minimal cross-sectional area of the upper airway (CSAmin-shape). RESULTS Of 47 participants (28 males, median age [interquartile range] 56 [46 to 63] years, median AHI 27.8 [15.0 to 33.8]), 34 participants were classified as having POSA (72%). The POSA group tended to have a higher proportion of males and a lower AHI than the NPOSA group (P = 0.07 and 0.07, respectively). After controlling for both sex and AHI, the anatomical balance and CSAmin-shape were not significantly different between both groups (P = 0.18 and 0.73, respectively). CONCLUSION Adults with POSA and adults with NPOSA have similar anatomical balance and shape of their upper airway in the supine position. TRIAL REGISTRATION This study was registered with the Australian New Zealand Clinical Trials Registry (ANZCTR Trial ACTRN12611000409976).
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Affiliation(s)
- Xiaoxin Shi
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, the Netherlands.
- Department of Oral Radiology & Digital Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands.
- Department of Oral and Maxillofacial Surgery, Amsterdam University Medical Centers/Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam, Amsterdam, The Netherlands.
| | - Kate Sutherland
- Centre for Sleep Health and Research, Department of Respiratory and Sleep Medicine, Royal North Shore Hospital, Sydney, Australia
- Charles Perkins Centre and Northern Clinical School, Sydney Medical School, Faculty of Medicine and Health University of Sydney, Sydney, Australia
| | - Frank Lobbezoo
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, the Netherlands
| | - Erwin Berkhout
- Department of Oral Radiology & Digital Dentistry, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Jan de Lange
- Department of Oral and Maxillofacial Surgery, Amsterdam University Medical Centers/Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam, Amsterdam, The Netherlands
| | - Peter A Cistulli
- Centre for Sleep Health and Research, Department of Respiratory and Sleep Medicine, Royal North Shore Hospital, Sydney, Australia
- Charles Perkins Centre and Northern Clinical School, Sydney Medical School, Faculty of Medicine and Health University of Sydney, Sydney, Australia
| | - M Ali Darendeliler
- Discipline of Orthodontics and Paediatric Dentistry, Sydney Dental School, University of Sydney, Sydney, Australia
- Department of Orthodontics, Sydney Dental Hospital, Sydney Local Health District, Sydney, Australia
| | - Oyku Dalci
- Discipline of Orthodontics and Paediatric Dentistry, Sydney Dental School, University of Sydney, Sydney, Australia
- Department of Orthodontics, Sydney Dental Hospital, Sydney Local Health District, Sydney, Australia
| | - Ghizlane Aarab
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Gustav Mahlerlaan 3004, 1081 LA, Amsterdam, the Netherlands
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Yang P, Shan J, Ge X, Zhou Q, Ding M, Niu T, Du J. Prediction of SBRT response in liver cancer by combining original and delta cone-beam CT radiomics: a pilot study. Phys Eng Sci Med 2024; 47:295-307. [PMID: 38165634 DOI: 10.1007/s13246-023-01366-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 12/06/2023] [Indexed: 01/04/2024]
Abstract
This study aims to explore the feasibility of utilizing a combination of original and delta cone-beam CT (CBCT) radiomics for predicting treatment response in liver tumors undergoing stereotactic body radiation therapy (SBRT). A total of 49 patients are included in this study, with 36 receiving 5-fraction SBRT, 3 receiving 4-fraction SBRT, and 10 receiving 3-fraction SBRT. The CBCT and planning CT images from liver cancer patients who underwent SBRT are collected to extract overall 547 radiomics features. The CBCT features which are reproducible and interchangeable with pCT are selected for modeling analysis. The delta features between fractions are calculated to depict tumor change. The patients with 4-fraction SBRT are only used for screening robust features. In patients receiving 5-fraction SBRT, the predictive ability of both original and delta CBCT features for two-level treatment response (local efficacy vs. local non-efficacy; complete response (CR) vs. partial response (PR)) is assessed by utilizing multivariable logistic regression with leave-one-out cross-validation. Additionally, univariate analysis is conducted to validate the capability of CBCT features in identifying local efficacy in patients receiving 3-fraction SBRT. In patients receiving 5-fraction SBRT, the combined models incorporating original and delta CBCT radiomics features demonstrate higher area under the curve (AUC) values compared to models using either original or delta features alone for both classification tasks. The AUC values for predicting local efficacy vs. local non-efficacy are 0.58 for original features, 0.82 for delta features, and 0.90 for combined features. For distinguishing PR from CR, the respective AUC values for original, delta and combined features are 0.79, 0.80, and 0.89. In patients receiving 3-fraction SBRT, eight valuable CBCT radiomics features are identified for predicting local efficacy. The combination of original and delta radiomics derived from fractionated CBCT images in liver cancer patients undergoing SBRT shows promise in providing comprehensive information for predicting treatment response.
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Affiliation(s)
- Pengfei Yang
- Peking University Aerospace School of Clinical Medicine, Aerospace Center Hospital, Beijing, 100049, China
- Institute of Biomedical Engineering, Shenzhen Bay Laboratory, Shenzhen, China
| | - Jingjing Shan
- Department of Radiation Oncology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Xin Ge
- School of Science, Shenzhen Campus of Sun Yat-sen University, Shenzhen, Guangdong, China
| | - Qinxuan Zhou
- Department of Radiation Oncology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Mingchao Ding
- Peking University Aerospace School of Clinical Medicine, Aerospace Center Hospital, Beijing, 100049, China
| | - Tianye Niu
- Peking University Aerospace School of Clinical Medicine, Aerospace Center Hospital, Beijing, 100049, China.
- Institute of Biomedical Engineering, Shenzhen Bay Laboratory, Shenzhen, China.
| | - Jichen Du
- Peking University Aerospace School of Clinical Medicine, Aerospace Center Hospital, Beijing, 100049, China.
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Zhang J, Qing C, Li Y, Wang Y. BCSwinReg: A cross-modal attention network for CBCT-to-CT multimodal image registration. Comput Biol Med 2024; 171:107990. [PMID: 38377717 DOI: 10.1016/j.compbiomed.2024.107990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 12/26/2023] [Accepted: 01/13/2024] [Indexed: 02/22/2024]
Abstract
Computed tomography (CT) and cone beam computed tomography (CBCT) registration plays an important role in radiotherapy. However, the poor quality of CBCT makes CBCT-CT multimodal registration challenging. Effective feature fusion and mapping often lead to better registration results for multimodal registration. Therefore, we proposed a new backbone network BCSwinReg and a cross-modal attention module CrossSwin. Specifically, a cross-modal attention CrossSwin is designed to promote multi-modal feature fusion, map the multi-modal domain to the common domain, and thus helping the network learn the correspondence between images better. Furthermore, a new network, BCSwinReg, is proposed to discover correspondence through cross-attention exchange information, obtain multi-level semantic information through a multi-resolution strategy, and finally integrate the deformation of multi-resolutions by the divide-conquer cascade method. We performed experiments on the publicly available 4D-Lung dataset to demonstrate the effectiveness of CrossSwin and BCSwinReg. Compared with VoxelMorph, the BCSwinReg has obtained performance improvements of 3.3% in Dice Similarity Coefficient (DSC) and 0.19 in the average 95% Hausdorff distance (HD95).
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Affiliation(s)
- Jieming Zhang
- The East China University of Science and Technology, Shanghai, 200237, China
| | - Chang Qing
- The East China University of Science and Technology, Shanghai, 200237, China.
| | - Yu Li
- The East China University of Science and Technology, Shanghai, 200237, China
| | - Yaqi Wang
- The East China University of Science and Technology, Shanghai, 200237, China
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Akbulut S, Bayrak S. Evaluation´ of mandibular alveolar bone in patients with different vertical facial patterns : A cross-sectional CBCT study. J Orofac Orthop 2024; 85:89-97. [PMID: 35788398 DOI: 10.1007/s00056-022-00408-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 05/23/2022] [Indexed: 10/17/2022]
Abstract
PURPOSE The study aimed to investigate the morphological and structural differences of mandibular alveolar bone between different vertical facial patterns (VFP). METHODS In all, 66 CBCT scans of patients were selected for the study: 24 were designated as hyperdivergent, 25 as normodivergent, and 17 as hypodivergent. Fractal values of the interdental alveolus were measured at the incisor, canine, premolar, and molar regions. The minimum trabecular bone width (MTBW) of the alveolus, the buccal and lingual cortical bone thicknesses, and the total alveolar width (AW) at the minimum trabecular bone level were measured. One-way analysis of variance and Tukey test were used to compare the groups. The correlations between FMA (Frankfurt mandibular plane angle) and other measurements were analyzed by Pearson analysis. RESULTS No significant differences were detected in fractal values and buccal and lingual cortical bone thicknesses between the groups. The MTBW and AW of the hypodivergent individuals were found to be higher in the anterior and premolar interdental sites. FMA was found to be significantly correlated with MTBW and AW. CONCLUSIONS The patients with different VFPs did not exhibit significant differences in the trabecular complexity of the mandibular alveolus. Hypodivergent patients tend to have thicker trabecular and alveolar bone widths than normodivergent and hyperdivergent individuals.
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Affiliation(s)
- Sibel Akbulut
- Faculty of Dentistry, Department of Orthodontics, Tokat Gaziosmanpasa University, Tokat, Turkey
| | - Seval Bayrak
- Faculty of Dentistry, Department of Dentomaxillofacial Radiology, Bolu Abant Izzet Baysal University, Bolu, Turkey.
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Soltani P, Devlin H, Etemadi Sh M, Rengo C, Spagnuolo G, Baghaei K. Do metal artifact reduction algorithms influence the detection of implant-related injuries to the inferior alveolar canal in CBCT images? BMC Oral Health 2024; 24:268. [PMID: 38395919 PMCID: PMC10885517 DOI: 10.1186/s12903-024-04043-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Accepted: 02/17/2024] [Indexed: 02/25/2024] Open
Abstract
BACKGROUND The routine application of dental implants for replacing missing teeth has revolutionized restorative and prosthetic dentistry. However, cone beam computed tomography (CBCT) evaluations of structures adjacent to the implants are limited by metal artifacts. There are several methods for reducing metal artifacts, but this remains a challenging task. This study aimed to examine the effectiveness of metal artifact reduction (MAR) algorithms in identifying injuries of implants to the inferior alveolar canal in CBCT images. METHOD In this in vitro study, mono-cortical bone windows were created and the inferior alveolar canal was revealed. Using 36 implants, pilot drill and penetration damage of the implant tip into the canal was simulated and compared to the control implants with distance from the canal. CBCT images were evaluated by four experienced observers with and without the MAR algorithm and compared to direct vision as the gold standard. The values of accuracy, sensitivity, and specificity were obtained and compared by receiver operating characteristic (ROC) curve (α = 0.05). RESULT The area under the ROC curve values for detection of pilot drill injuries varied between 0.840-0.917 and 0.639-0.854 in the active and inactive MAR conditions, respectively. The increase in ROC area was only significant for one of the observers (P = 0.010). For diagnosing penetrative injuries, the area under the ROC curve values was between 0.990-1.000 and 0.722-1.000 in the active and inactive MAR conditions, respectively. The improvement of ROC curve values in active MAR mode was only significant for one of the observers (P = 0.006). CONCLUSION Activation of MAR improved the diagnostic values of CBCT images in detecting both types of implant-related injuries to the inferior alveolar canal. However, for most observers, this increase was not statistically significant.
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Affiliation(s)
- Parisa Soltani
- Department of Oral and Maxillofacial Radiology, Dental Implants Research Center, Dental Research Institute, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples "Federico II", Naples, Italy
| | - Hugh Devlin
- The Dental School, The University of Bristol, Bristol, UK
- Department of Restorative Dentistry, School of Dentistry, Jordan University, Amman, Jordan
| | - Milad Etemadi Sh
- Department of Oral and Maxillofacial Surgery, Dental Implants Research Center, Dental Research Institute, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Carlo Rengo
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples "Federico II", Naples, Italy
| | - Gianrico Spagnuolo
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples "Federico II", Naples, Italy
- Therapeutic Dentistry Department, Institute for Dentistry, Sechenov University, Moscow, 119991, Russia
| | - Kimia Baghaei
- Student Research Committee, School of Dentistry, Isfahan University of Medical Sciences, Hezar- Jarib Ave, Isfahan, Iran.
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Reduwan NH, Abdul Aziz AA, Mohd Razi R, Abdullah ERMF, Mazloom Nezhad SM, Gohain M, Ibrahim N. Application of deep learning and feature selection technique on external root resorption identification on CBCT images. BMC Oral Health 2024; 24:252. [PMID: 38373931 PMCID: PMC10875886 DOI: 10.1186/s12903-024-03910-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 01/17/2024] [Indexed: 02/21/2024] Open
Abstract
BACKGROUND Artificial intelligence has been proven to improve the identification of various maxillofacial lesions. The aim of the current study is two-fold: to assess the performance of four deep learning models (DLM) in external root resorption (ERR) identification and to assess the effect of combining feature selection technique (FST) with DLM on their ability in ERR identification. METHODS External root resorption was simulated on 88 extracted premolar teeth using tungsten bur in different depths (0.5 mm, 1 mm, and 2 mm). All teeth were scanned using a Cone beam CT (Carestream Dental, Atlanta, GA). Afterward, a training (70%), validation (10%), and test (20%) dataset were established. The performance of four DLMs including Random Forest (RF) + Visual Geometry Group 16 (VGG), RF + EfficienNetB4 (EFNET), Support Vector Machine (SVM) + VGG, and SVM + EFNET) and four hybrid models (DLM + FST: (i) FS + RF + VGG, (ii) FS + RF + EFNET, (iii) FS + SVM + VGG and (iv) FS + SVM + EFNET) was compared. Five performance parameters were assessed: classification accuracy, F1-score, precision, specificity, and error rate. FST algorithms (Boruta and Recursive Feature Selection) were combined with the DLMs to assess their performance. RESULTS RF + VGG exhibited the highest performance in identifying ERR, followed by the other tested models. Similarly, FST combined with RF + VGG outperformed other models with classification accuracy, F1-score, precision, and specificity of 81.9%, weighted accuracy of 83%, and area under the curve (AUC) of 96%. Kruskal Wallis test revealed a significant difference (p = 0.008) in the prediction accuracy among the eight DLMs. CONCLUSION In general, all DLMs have similar performance on ERR identification. However, the performance can be improved by combining FST with DLMs.
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Affiliation(s)
- Nor Hidayah Reduwan
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, 50603, Malaysia
- Centre of Oral and Maxillofacial Diagnostic and Medicine Studies, Faculty of Dentistry, University Teknologi MARA, Sungai Buloh, 47000, Malaysia
| | - Azwatee Abdul Abdul Aziz
- Department of Restorative Dentistry, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, 50603, Malaysia
| | - Roziana Mohd Razi
- Department of Pediatric Dentistry and Orthodontic, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, 50603, Malaysia
| | - Erma Rahayu Mohd Faizal Abdullah
- Department of Artificial Intelligence, Faculty of Computer Science and Information Technology, Universiti Malaya, Kuala Lumpur, 50603, Malaysia.
| | - Seyed Matin Mazloom Nezhad
- Department of Artificial Intelligence, Faculty of Computer Science and Information Technology, Universiti Malaya, Kuala Lumpur, 50603, Malaysia
| | - Meghna Gohain
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, 50603, Malaysia
| | - Norliza Ibrahim
- Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry, Universiti Malaya, Kuala Lumpur, 50603, Malaysia.
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Pan Y, Wei L, Zheng Z, Bi W. An evaluation of bone depth at different three-dimensional paths in infrazygomatic crest region for miniscrew insertion: A cone beam computed tomography study. Heliyon 2024; 10:e25827. [PMID: 38352741 PMCID: PMC10863323 DOI: 10.1016/j.heliyon.2024.e25827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 01/30/2024] [Accepted: 02/02/2024] [Indexed: 02/16/2024] Open
Abstract
Objective To investigate the difference and distribution of bone depth at different three-dimensional simulated paths to help optimize the insertion path for miniscrew placement in the infrazygomatic crest. Methods Cone beam computed tomography scans of 80 adults (38 males and 42 females; mean age, 27.0 years) were assessed. For each subject, bone depth of 81 simulated insertion paths at different insertion points and three-dimensional angulations was measured in 160 infrazygomatic crests; the differences were evaluated using the adjusted Friedman test. The bone deficiency ratio for each path was calculated. Distributions of measurements were analyzed and reported as specially designed colormaps. Results Bone depth increased, and bone deficiency ratio reduced mesially to distally (P < 0.001), apically to coronally (P < 0.01), and at a greater gingival and distal inclination (P < 0.05). The maximum bone depth (10.72 mm) was observed 13 mm above the maxillary occlusal plane in the mesiobuccal root of the maxillary second molar. The minimum bone depth (3.4 mm) was observed 17 mm above the maxillary occlusal plane in the distobuccal root of the maxillary first molar. No bone deficiency was detected at the paths of 13 mm above the maxillary occlusal plane at a gingival inclination of 70° and distal inclination of 30° in the mesiobuccal root of the maxillary second molar. The highest bone deficiency ratio is present 17 mm above the maxillary occlusal plane at a gingival inclination of 60° and a distal inclination of 0° in the distobuccal root of the maxillary first molar (89/160). Conclusion Insertion paths located at 13 mm above the maxillary occlusal plane in the mesiobuccal root of the maxillary second molar were optimal. A gingival inclination of 70° and a distal inclination of 30° could be beneficial. The distobuccal root of the maxillary first molar region or above the 17 mm insertion plane may not be recommended.
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Affiliation(s)
- Yingdan Pan
- Department of Stomatology, Zhongshan Hospital (Xiamen), Fudan University, Xiamen, China
| | - Lijun Wei
- Department of Stomatology, Zhongshan Hospital (Xiamen), Fudan University, Xiamen, China
| | - Zhanglong Zheng
- Department of Stomatology, Zhongshan Hospital (Xiamen), Fudan University, Xiamen, China
| | - Wei Bi
- Department of Stomatology, Zhongshan Hospital (Xiamen), Fudan University, Xiamen, China
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Elsayed MA, Elmesellawy MY, Schäfer E. Prevalence of multiple roots and complex canal morphology in mandibular premolars among a selected Southern Egyptian sub-population: a CBCT-analysis. Odontology 2024:10.1007/s10266-024-00903-7. [PMID: 38351258 DOI: 10.1007/s10266-024-00903-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 01/08/2024] [Indexed: 02/23/2024]
Abstract
The mandibular premolars can pose a significant challenge in root canal treatment due to their complex canal system. This study investigated the prevalence of multiple roots and complex canal morphology of mandibular premolars in a selected Egyptian sub-population using cone beam computed tomography (CBCT). 283 CBCT scans (131 males, 152 females, age 18-70) included 1132 mandibular premolars (566 first, and 566 second premolars) were viewed for incidences ofvariation in root numbers and canal configuration according to Vertucci's classification. CBCT images were assessed by two endodontists, data were statistically analyzed using Fisher exact and Chi-square tests. The majority of first premolars (85.7%) exhibited a single root, whereas 14.7% had 2 roots with a significantly higher frequency in males (19.8%) than in females (9.5%) (P < .05). The most prevalent type was type I (57.8%), followed by type V (21.7%), while types II and VII made up only 1%. Types V and III were more prevalent among females, while males had a higher prevalence of types I and IV. In 2.5% of cases, mandibular second premolars were found to have 2 roots, with a higher incidence in males (P < .05). Type I canals were significantly more prevalent (90.8%) than other types, followed by type V (5.3%) (P < .05). A statistically significant gender correlation was found regarding root number and canal configuration. It is not uncommon to find mandibular first premolars with two roots in the southern Egyptian population, particularly in males. These observations may be valuable for dentists who treat Southern Egyptians, in Egypt and other countries.
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Affiliation(s)
- Mohamed Ahmed Elsayed
- Department of Endodontics, RAK College of Dental Sciences, RAK Medical and Health Sciences University, Ras Al-Khaimah, United Arab Emirates
- Department of Endodontics, Faculty of Dentistry, Assiut University, Assiut, Egypt
| | | | - Edgar Schäfer
- Central Interdisciplinary Ambulance, School of Dentistry, University of Münster, Waldeyerstr. 30, 48149, Münster, Germany.
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Rodrigues DM, Gluckman H, Pontes CC, Januário AL, Petersen RL, de Moraes JR, Barboza EP. Relationship between soft tissue dimensions and tomographic radial root position classification system for immediate implant installation. Odontology 2024:10.1007/s10266-023-00897-8. [PMID: 38324124 DOI: 10.1007/s10266-023-00897-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 12/27/2023] [Indexed: 02/08/2024]
Abstract
The aim of this study was to evaluate the relationship between soft tissue dimensions and radial root position (RRP) classification for immediate implant placement on maxillary anterior teeth. Maxillary anterior teeth (n = 420) were analyzed in the radial plane of cone beam computed tomography (CBCT) scans. Each tooth was classified according to its RRP: class I, (IA, IB); class II (IIA, IIB) class III; class IV, and class V. Soft tissue thickness at different landmarks, supracrestal soft tissue height, and crestal bone thickness were measured in CBCT. Keratinized tissue width was clinically measured. Gingival phenotype (thick or thin) was evaluated by transparency of the periodontal probe and at the landmark 2 mm from the gingival margin in CBCT. Class I tooth position accounted for 31.7%, class II for 45%, class III for 13.3%, class IV for 0.5%, and class V for 9.5%. The gingival phenotype was associated with RRP (χ2 test, p < 0.05). Soft tissue dimensions were significantly different over RRP classes (ANOVA and Tukey tests, p < 0.05). Types IA and IIA presented both thick soft and hard tissues. When planning immediate implants in the anterior maxilla, soft tissue dimensions evaluation should be incorporated into RRP classification to increase the accuracy and predictability of treatment outcomes.
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Affiliation(s)
- Diogo Moreira Rodrigues
- Department of Periodontology, National Institute of Dental Sciences (INCO 25), Niterói, Rio de Janeiro, Brazil.
| | - Howard Gluckman
- Private Practice, Cape Town, South Africa
- Implant and Aesthetic Academy, Cape Town, South Africa
- Department of Periodontics, University of Pennsylvania School of Dental Medicine, Philadelphia, PA, USA
- Department of Oral Medicine and Periodontology, University of Western Cape School of Dentistry, Cape Town, South Africa
| | - Carla Cruvinel Pontes
- Mouth-Body Research Institute and The Implant and Esthetic Academy, Cape Town, South Africa
| | | | | | - José Rodrigo de Moraes
- Department of Statistics, Federal Fluminense University, Niterói, Rio de Janeiro, Brazil
| | - Eliane Porto Barboza
- Department of Dental Clinics, Fluminense Federal University, Niterói, Rio de Janeiro, Brazil
- Lake Erie College of Osteopathic Medicine (LECOM) School of Dental Medicine, Lakewood Ranch, Florida, USA
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Alotaibi BB, Khan KI, Javed MQ, Dutta SD, Shaikh SS, Almutairi NM. Relationship between apical periodontitis and missed canals in mesio-buccal roots of maxillary molars: CBCT study. J Taibah Univ Med Sci 2024; 19:18-27. [PMID: 37868101 PMCID: PMC10585297 DOI: 10.1016/j.jtumed.2023.08.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/02/2023] [Accepted: 08/30/2023] [Indexed: 10/24/2023] Open
Abstract
Objectives The objectives of this study were to: (1) assess the frequency of missed canals in the mesiobuccal root (MB) of endodontically treated maxillary molars and its association with apical periodontitis (AP); (2) examine the correlation between the presence of a confluent or separate missed MB2 canal and the prevalence of AP; and (3) examine the correlation between the technical quality of endodontic treatment in the MB1 canal and the prevalence of AP. Methods We obtained and examined 800 cone-beam computed tomography (CBCT) scans from 800 patient records over 6 months. The parameters noted for each tooth included the tooth number; presence of missed canals in the MB root; configuration of missed MB2 canals (confluent or separate); technical acceptability of root canal treatment (RCT) of treated MB1 canals; and the CBCT periapical index score. Data were analyzed in SPSS version 24. Results A total of 203 maxillary molars from 148 CBCT scans were included. The MB2 canal prevalence was 88.2% in maxillary first molars and 62.7% in maxillary second molars. MB2 was found in 164 endodontically treated maxillary molars. During treatment, MB2 was missed in 150 (91.5%) and treated in 14 (8.5%) teeth. A total of 103 teeth (50.73%) had AP, which was observed in 67.3% of teeth with a missed MB2 canal but only 14.3% of teeth with a treated MB2 canal. The prevalence of AP was 43.7% in teeth with confluent MB2 canals and 80.9% in teeth with separate MB2 canals. Conclusion The MB2 canal frequency was significantly higher in the examined maxillary first molars than the maxillary second molars. The MB2 canal was missed in most teeth that underwent endodontic treatment. The AP prevalence was relatively higher in endodontically treated maxillary molars with missed MB2 canals.
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Affiliation(s)
- Badi B. Alotaibi
- Department of Conservative Dental Sciences, College of Dentistry, Qassim University, Buraidah, KSA
| | - Kiran I. Khan
- Department of Operative Dentistry, Frontier Medical and Dental College, Abbottabad, Pakistan
| | - Muhammad Q. Javed
- Department of Conservative Dental Sciences, College of Dentistry, Qassim University, Buraidah, KSA
| | - Smita D. Dutta
- Department of Conservative Dental Sciences, College of Dentistry, Qassim University, Buraidah, KSA
| | - Safia S. Shaikh
- Department of Oral and Maxillofacial Surgery and Diagnostic Sciences, College of Dentistry, Qassim University, Buraidah, KSA
| | - Nawaf M. Almutairi
- Department of Conservative Dental Sciences, College of Dentistry, Qassim University, Buraidah, KSA
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Tekin G, Kose NS, Ugurlu M, Dereci O, Kosar YC, Gojayeva G, Caliskan G. Determining the safety margin of mandibular lingula in sagittal split ramus osteotomy. Surg Radiol Anat 2024; 46:159-166. [PMID: 38244088 DOI: 10.1007/s00276-023-03291-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 12/20/2023] [Indexed: 01/22/2024]
Abstract
PURPOSE The anatomical position of the lingula is clinically very important to prevent injuries during sagittal split ramus osteotomy. Our study aims to evaluate the localisation of the lingula by cone beam computed tomography (CBCT) and to compare the localisation of the lingula between malocclusion, gender, and lingula types. METHODS A retrospective study was conducted to evaluate the shape and location of the lingula using CBCT. A total of 250 CBCT images were included in this study. The lingula was classified as nodular, assimilated, truncated, or triangular type. Six defined distances from the top of the lingula were measured: anterior border of the ramus (L-A), posterior border of the ramus (L-P), internal oblique ridge (L-IOR), mandibular notch (L-N), and distal surface of the mandibular second molar (L-M2) and occlusal plane (L-OP). The measured distances were compared between gender, malocclusion, and lingula types. RESULTS The most common type of lingula was nodular (32.4%). The L-N, L-P, L-M2, and L-OP distances between genders were statistically higher in male patients than in female patients. The L-IOR, L-M2, and L-OP distances exhibited statistically significant differences found between malocclusions. No statistically significant difference was found when the distances of the lingula to the anatomical points were compared between the lingula types. CONCLUSION These variations in positioning of the lingula depending on the dysmorphoses are developing towards a systematic 3D examination before any mandibular osteotomy to precisely visualize the position and shape of the lingula.
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Affiliation(s)
- Gorkem Tekin
- Department of Oral and Maxillofacial Surgery, Eskişehir Osmangazi University, Faculty of Dentistry, Eskişehir, Turkey.
| | - Nesrin Saruhan Kose
- Department of Oral and Maxillofacial Surgery, Eskişehir Osmangazi University, Faculty of Dentistry, Eskişehir, Turkey
| | - Mehmet Ugurlu
- Department of Orthodontics, Eskişehir Osmangazi University, Faculty of Dentistry, Eskişehir, Turkey
| | - Omur Dereci
- Department of Oral and Maxillofacial Surgery, Eskişehir Osmangazi University, Faculty of Dentistry, Eskişehir, Turkey
| | - Yasin Caglar Kosar
- Department of Oral and Maxillofacial Surgery, Eskişehir Osmangazi University, Faculty of Dentistry, Eskişehir, Turkey
| | - Gunay Gojayeva
- Specialist in Oral and Maxillofacial Surgeon, Private Practice, Eskişehir, Turkey
| | - Gizem Caliskan
- Department of Oral and Maxillofacial Surgery, Eskişehir Osmangazi University, Faculty of Dentistry, Eskişehir, Turkey
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Sane VD, Sunil Nair V, Jadhav R, Sane R, Kadam P, Patil R. Comparative Evaluation of Efficacy of Platelet Rich Plasma (PRP) and Platelet Rich Fibrin (PRF) in Bone Regeneration after Surgical Removal of Impacted Bilateral Mandibular Third Molars - A Comparative Study. Indian J Otolaryngol Head Neck Surg 2024; 76:811-818. [PMID: 38440518 PMCID: PMC10908979 DOI: 10.1007/s12070-023-04285-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 10/13/2023] [Indexed: 03/06/2024] Open
Abstract
Aims and Objectives: To compare the efficacy of platelet rich plasma (PRP) and platelet rich fibrin (PRF) in bone regeneration after removal of impacted bilateral third molars. Materials and Methods: The study was carried out as an open clinical trial on 20 patients chosen from the ones referred to the department of Oral & Maxillofacial Surgery for surgical removal of bilateral mandibular third molar. Patients were prepared for surgical procedure, Inferior alveolar nerve block given using 2% lignocaine hydrochloride with 1:2,00,000 adrenaline. Third molar were removed by flap reflection and bone drilling. Finally, PRF in lower left mandibular third molar region and PRP in lower right mandibular third molar region was inserted and wound closure was done. Cone bean computer tomography (CBCT) was made on 1st postoperative day and 4 months after surgery to evaluate alveolar bone height and density. Result: Alveolar bone height and bone density at post-operative 1st day and 4 months were compared between PRP and PRF group. The bone density and bone volume were analyzed, and there was no significant difference between bone density in PRP and PRF at day 1 and 4th month. Conclusion: As per our study and evaluation, in our postoperative follow up there was no statistically significant differences in bone regeneration by placement of PRP and PRF in extracted socket of third molar. Thus, with this study we can conclude that PRF, would be a good option to Oral and Maxillofacial Surgeons in the near future due to ease of extraction.
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Affiliation(s)
- Vikrant Dilip Sane
- Department of OMFS; Bharati Vidyapeeth (Deemed to be), University Dental College and Hospital, Katraj, Pune India
| | - Vivek Sunil Nair
- Department of OMFS; Bharati Vidyapeeth (Deemed to be), University Dental College and Hospital, Katraj, Pune India
| | - Rohit Jadhav
- Department of ENT; Bharati Vidyapeeth (Deemed to be), University Medical College and Hospital, Katraj, Pune India
| | - Rashmi Sane
- Department of Oral Medicine and Radiology; Bharati Vidyapeeth (Deemed to be), University Dental College and Hospital, Katraj, Pune India
| | - Pankaj Kadam
- Department of Prosthodontics, Crown and Bridge; Bharati Vidyapeeth (Deemed to be), University Dental College and Hospital, Katraj, Pune India
| | - Rupali Patil
- Department of Prosthodontics, Crown and Bridge; Bharati Vidyapeeth (Deemed to be), University Dental College and Hospital, Katraj, Pune India
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Gan LM, Zhou QR, Zhang Y, Yu YC, Yu ZZ, Sun Y, Li RX, Wu XW, Yang F. Alveolar Bone Morphologic Predictors for Guided Bone Regeneration Outcome in Anterior Maxilla. Int Dent J 2024; 74:102-109. [PMID: 37714716 PMCID: PMC10829351 DOI: 10.1016/j.identj.2023.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 07/13/2023] [Accepted: 07/15/2023] [Indexed: 09/17/2023] Open
Abstract
OBJECTIVES This study aimed to explore the influence of alveolar bone morphologic variables on the outcome of guided bone regeneration (GBR) in the anterior maxilla region. METHODS Twenty-eight patients who received single maxillary anterior tooth delayed implant placed simultaneously with GBR were recruited. Baseline data including age, gender, implant site, implant brand, and bone graft materials were recorded. The resorption rate of the grafted bone (RRGB), labial bone width at 0 mm, 2 mm, and 4 mm apical to the implant platform at Tn (LBW0Tn, LBW2Tn, LBW4Tn), implant angulation (IA), maximum bone graft thickness (MBGT), bone graft volume (BGV), and the initial bone morphologic variables bone concavity depth (BCD) and bone concavity angulation (BCA) were measured. The Pearson correlation analysis, analysis of variance (ANOVA), and optimal binning method were used to explore the potential predictors for GBR. RESULTS Among 28 patients, the labial bone width of implant and bone graft volume decreased significantly when measured 6 months after surgery. The mean percentage of RRGB was 49.78%. RRGB was not correlated with gender, age, bone graft material, IA, MBGT, bone graft volume at T1, implant site, and implant brand (P > .05). BCD and BCA were each moderately correlated with RRGB (r = -0.872 [P < .001] and r = 0.686 [P < .001], respectively). A BCD ≥1.03 mm and a BCA <155.30° resulted in a significantly lower percentage of RRGB (P < .001). CONCLUSIONS A significant grafted bone materials volume reduction was detected after GBR with collagen membrane and deproteinized bovine bone mineral (DBBM). The initial bone morphology can influence GBR outcome, and a bone concavity with a depth ≥1.03 mm and an angulation <155.30° led to a lower RRGB. BCD and BCA can be used as variables to predict the outcome of GBR.
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Affiliation(s)
- Luo-Man Gan
- Department of Stomatology, Zhongshan Hospital Affiliated to Fudan University, Shanghai, P. R. China
| | - Qian-Rong Zhou
- Department of Stomatology, Zhongshan Hospital Affiliated to Fudan University, Shanghai, P. R. China
| | - Yan Zhang
- Department of Stomatology, Zhongshan Hospital Affiliated to Fudan University, Shanghai, P. R. China
| | - You-Cheng Yu
- Department of Stomatology, Zhongshan Hospital Affiliated to Fudan University, Shanghai, P. R. China; Department of Stomatology, Xiamen Branch, Zhongshan Hospital, Fudan University, Xiamen, P. R. China
| | - Zhen-Ze Yu
- Department of Stomatology, Zhongshan Hospital Affiliated to Fudan University, Shanghai, P. R. China
| | - Yang Sun
- Department of Stomatology, Zhongshan Hospital Affiliated to Fudan University, Shanghai, P. R. China
| | - Rui-Xue Li
- Department of Stomatology, Zhongshan Hospital Affiliated to Fudan University, Shanghai, P. R. China
| | - Xing-Wen Wu
- Department of Stomatology, Zhongshan Hospital Affiliated to Fudan University, Shanghai, P. R. China
| | - Fei Yang
- Department of Stomatology, Zhongshan Hospital Affiliated to Fudan University, Shanghai, P. R. China; Department of Stomatology, Xiamen Branch, Zhongshan Hospital, Fudan University, Xiamen, P. R. China.
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Zhang Y, Zheng J, Wu Q, Jiang T, Xiao H, Du Y, Qi Y, Jin Z, Li F. Three-dimensional spatial analysis of temporomandibular joint in adolescent Class II division 1 malocclusion patients: comparison of Twin-Block and clear functional aligner. Head Face Med 2024; 20:4. [PMID: 38184631 PMCID: PMC10770962 DOI: 10.1186/s13005-023-00404-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 12/18/2023] [Indexed: 01/08/2024] Open
Abstract
BACKGROUND Our study aimed to use three-dimensional (3D) spatial morphological measurement methods to compare the influence of Twin-Block and clear functional aligners on the temporomandibular joint (TMJ) of adolescent Class II division 1 malocclusion mandibular retraction patients. We also aimed to explore the similarities and differences in the effects on the TMJ upon using Twin-Block and clear functional aligner. METHODS Cone-beam computed tomography (CBCT) data of 49 patients with Class II division 1 malocclusion (Twin-Block group: 24; clear functional aligner group: 25) were collected before and after functional orthodontic treatment, and a 3D model of the TMJ was reconstructed using MIMICS 21.0 software. Eighteen measurement parameters, including the anterior, superior, and posterior joint spaces, were measured and compared using the 3D model. RESULTS After the two groups underwent functional appliance treatment, the height, volume, and surface area of the condyle, length of the mandibular ramus and mandibular length increased; The retro-displaced condyle moved to the middle position of the articular fossa, while the rest of the condylar position did not change significantly. Remodeling of the articular fossa after treatment was not evident. The superior joint space of the clear functional aligner group increased, but there was no significant change after Twin-Block appliances treatment. CONCLUSIONS Both appliances promote condylar growth and sagittal and vertical development of the mandible in adolescent Class II division 1 malocclusion mandibular retraction patients. The length of the mandibular ramus showed a more significant increase following treatment with the Twin-Block appliances than with clear function aligners.
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Affiliation(s)
- Yueying Zhang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, The Third Affiliated Hospital of Air Force Medical University, Xian, 710032, Shaanxi, People's Republic of China
| | - Jiajing Zheng
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, The Third Affiliated Hospital of Air Force Medical University, Xian, 710032, Shaanxi, People's Republic of China
| | - Qiuyue Wu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, The Third Affiliated Hospital of Air Force Medical University, Xian, 710032, Shaanxi, People's Republic of China
| | - Tianlu Jiang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, The Third Affiliated Hospital of Air Force Medical University, Xian, 710032, Shaanxi, People's Republic of China
| | - Hua Xiao
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, The Third Affiliated Hospital of Air Force Medical University, Xian, 710032, Shaanxi, People's Republic of China
| | - Yusen Du
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, The Third Affiliated Hospital of Air Force Medical University, Xian, 710032, Shaanxi, People's Republic of China
| | - Yizhe Qi
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, The Third Affiliated Hospital of Air Force Medical University, Xian, 710032, Shaanxi, People's Republic of China
| | - Zuolin Jin
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, The Third Affiliated Hospital of Air Force Medical University, Xian, 710032, Shaanxi, People's Republic of China.
| | - Feifei Li
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, The Third Affiliated Hospital of Air Force Medical University, Xian, 710032, Shaanxi, People's Republic of China.
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Tao S, Tian Z, Bai L, Xu Y, Kuang C, Liu X. Phase retrieval for X-ray differential phase contrast radiography with knowledge transfer learning from virtual differential absorption model. Comput Biol Med 2024; 168:107711. [PMID: 37995534 DOI: 10.1016/j.compbiomed.2023.107711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 10/31/2023] [Accepted: 11/15/2023] [Indexed: 11/25/2023]
Abstract
Grating-based X-ray phase contrast radiography and computed tomography (CT) are promising modalities for future medical applications. However, the ill-posed phase retrieval problem in X-ray phase contrast imaging has hindered its use for quantitative analysis in biomedical imaging. Deep learning has been proved as an effective tool for image retrieval. However, in practical grating-based X-ray phase contrast imaging system, acquiring the ground truth of phase to form image pairs is challenging, which poses a great obstacle for using deep leaning methods. Transfer learning is widely used to address the problem with knowledge inheritance from similar tasks. In the present research, we propose a virtual differential absorption model and generate a training dataset with differential absorption images and absorption images. The knowledge learned from the training is transferred to phase retrieval with transfer learning techniques. Numerical simulations and experiments both demonstrate its feasibility. Image quality of retrieved phase radiograph and phase CT slices is improved when compared with representative phase retrieval methods. We conclude that this method is helpful in both X-ray 2D and 3D imaging and may find its applications in X-ray phase contrast radiography and X-ray phase CT.
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Affiliation(s)
- Siwei Tao
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Zonghan Tian
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Ling Bai
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yueshu Xu
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China; State Key Laboratory of Extreme Photonics and Instrumentation, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 315100, China
| | - Cuifang Kuang
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China; State Key Laboratory of Extreme Photonics and Instrumentation, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 315100, China; Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 030006, China.
| | - Xu Liu
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, 310027, China; State Key Laboratory of Extreme Photonics and Instrumentation, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou, 315100, China; Ningbo Research Institute, Zhejiang University, Ningbo, 315100, China.
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Wen XL, Wu BZ, Li Y, Yi B, Peng X. Analysis of the aerodynamic characteristics of the upper airway in obstructive sleep apnea patients. J Dent Sci 2024; 19:329-337. [PMID: 38303889 PMCID: PMC10829548 DOI: 10.1016/j.jds.2023.03.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 03/15/2023] [Indexed: 02/03/2024] Open
Abstract
Background/purpose This study was designed to explore upper airway aerodynamic characteristics in individuals diagnosed with obstructive sleep apnea (OSA) and to evaluate correlations between these characteristics and other anatomical upper airway findings in these patients. Materials and methods This was a retrospective study of 40 OSA patients (22 male, 18 female) who were stratified into groups with mild, moderate, and severe disease based upon overnight polysomnographic (PSG) recording results. Newtom5G cone-beam CT scans (CBCT) were conducted for all patients, and the resultant images were used to reconstruct three-dimensional images of the upper airways which were used to calculate aerodynamic characteristics. Differences in these characteristics between groups were evaluated with one-way ANOVAs, while relationships between anatomical and aerodynamic characteristics were assessed through Pearson correlation analyses. Results The aerodynamic of the upper airway has typical characteristic in severe group. There was a significant negative correlation in severe group between resistance during inspiration (Rin) and volume (V) (r = -0.693, P = 0.013), minimum axial area (MMA) (r = -0.685, P = 0.014), and lateral dimension (LAT) (r = -0.724, P = 0.008), resistance during expiration (Rex) and LAT (r = -0.923, P < 0.001). Conclusion This study showed that airway resistance during inspiration and expiration are most closely associated with upper airway collapse in OSA patients, with repetitive collapse occurring during both of these breathing processes. LAT may be an important anatomical factor associated with OSA pathogenesis and treatment.
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Affiliation(s)
- Xing-Long Wen
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, PR China
| | - Bin-Zhang Wu
- First Clinical Division, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, PR China
| | - Yang Li
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, PR China
| | - Biao Yi
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, PR China
| | - Xin Peng
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, PR China
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Luongo F, Lerner H, Gesso C, Sormani A, Kalemaj Z, Luongo G. Accuracy in static guided implant surgery: Results from a multicenter retrospective clinical study on 21 patients treated in three private practices. J Dent 2024; 140:104795. [PMID: 38016619 DOI: 10.1016/j.jdent.2023.104795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 11/22/2023] [Accepted: 11/26/2023] [Indexed: 11/30/2023] Open
Abstract
PURPOSE To evaluate the accuracy of a static computer-assisted implant surgery (s-CAIS) system across different private practices. METHODS This retrospective clinical study was based on data retrieved from 21 patients who received 61 implants between 2018 and 2020 in 3 private practices run by surgeons with extensive experience with s-CAIS. All patients were treated using the same s-CAIS system, planning software, template manufacturing process, and surgical guides. The standard tessellation language (STL) file of the intraoral scan of the fixture taken immediately after implant placement was matched with that of the preoperative plan for comparisons of preoperative and planned implant positions with postoperative and actual implant positions. The study outcomes were linear and angular deviations between the planned and actual implant positions. RESULTS No surgical or postsurgical complications occurred. The overlap of the two STL files resulted in a mean angular deviation of 2.94° The mean linear deviation at the implant shoulder was 0.73 mm, and that at the apex was 1.06 mm. The mean vertical deviations at the implant shoulder and the apex were 0.29 mm and 0.01 mm, respectively. CONCLUSION All cases showed satisfactory accuracy within the limits of this study (small number of patients and retrospective design). These results might be related to the use of a standardized digital workflow by experienced operators. STATEMENT OF CLINICAL RELEVANCE The study shows that careful control of each step, from data acquisition to final execution, is key for the accuracy of stent-guided systems.
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Affiliation(s)
- Fabrizia Luongo
- MS, Private Practice, DDS, Via Frattina 27, Rome 00187, Italy.
| | | | | | - Alice Sormani
- Biomedical Engineer, International Consultant Medical Imaging and Guided Surgery Applications, 3Diemme srl Cantù, Italy
| | - Zamira Kalemaj
- PhD, MsC in Epidemiology and Statistics Private Practice, DDS, Milan, Italy
| | - Giuseppe Luongo
- MD, DDS, Department of Oral and Maxillofacial Surgery, Federico II University, Naples, Italy
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Zarogoulidis P, Papadopoulos V, Perdikouri EI, Vagionas A, Matthaios D, Ioannidis A, Hohemforst-Schmidt W, Huang H, Bai C, Panagoula O, Nikolaou C, Charalampidis C, Kosmidis C, Sapalidis K, Machairiotis N, Pataka A. Ablation for Single Pulmonary Nodules, Primary or Metastatic. Εndobronchial Ablation Systems or Percutaneous. J Cancer 2024; 15:880-888. [PMID: 38230209 PMCID: PMC10788723 DOI: 10.7150/jca.90494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 11/01/2023] [Indexed: 01/18/2024] Open
Abstract
Single pulmonary nodules are a difficult to diagnose imagining artifact. Currently novel diagnostic tools such as Radial-EBUS with or not C-ARM flouroscopy, electromagnetic navigation systems, robotic bronchoscopy and cone beam-compuer tomography (CBCT) can assist in the optimal guidance of biopsy equipment. After diagnosis of lung cancer or metastatic disease as pulmonary nodule, then surgery or ablation methods as local treatment can be applied. The percutaneous ablation systems under computed tomography guidance with radiofrequency, microwave, cryo and thermosphere have been used for several years. In the past 10 years extensive research has been made for endobronchial ablation systems and methods. We will present and comment on the two different ablation methods and present up to date data.
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Affiliation(s)
- Paul Zarogoulidis
- Pulmonary Department, General Clinic Euromedica, Thessaloniki, Greece
| | | | | | | | | | - Aris Ioannidis
- Surgery Department, Genisis Private Clinic, Thessaloniki, Greece
| | | | - Haidong Huang
- Department of Respiratory and Critical Care Medicine, Changhai Hospital, Navy Military Medical University, Shanghai, 200433, China
| | - Chong Bai
- Department of Respiratory and Critical Care Medicine, Changhai Hospital, Navy Military Medical University, Shanghai, 200433, China
| | - Oikonomou Panagoula
- Surgery Department, Democritus University of Thrace, Alexandroupolis, Greece
| | - Christina Nikolaou
- Surgery Department, Democritus University of Thrace, Alexandroupolis, Greece
| | | | - Christoforos Kosmidis
- 3rd University Surgery Department, ``AHEPA`` University Hospital, Thessaloniki, Greece
| | | | - Nikolaos Machairiotis
- Third Department of Obstetrics and Gynecology, University General Hospital “ATTIKON”, Medical School of the National and Kapodistrian University of Athens, Athens, Greece
| | - Athanasia Pataka
- Pulmonary Department, G. Papanikolaou General Hospital, Aristotle University of Thessaloniki, Greece
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Adames C, Gaêta-Araujo H, Franco A, Soares MQS, Junqueira JLC, Oenning AC. Influence of CBCT-derived panoramic curve variability in the measurements for dental implant planning. Oral Radiol 2024; 40:30-36. [PMID: 37540349 DOI: 10.1007/s11282-023-00703-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 07/21/2023] [Indexed: 08/05/2023]
Abstract
OBJECTIVE To investigate whether the curve markings performed prior to panoramic and cross-sectional reconstructions can influence the planning of oral implants. METHODS Twenty oral radiologists landmarked the reference panoramic curves in 25 CBCT scans of the mandible. Bone height was measured on the resulting cross-sectional slices in the edentulous region of the lower first molar. The following data were recorded: (1) number of landmarks used to build each reference curve; (2) shape of the reference curve (inverted "U", inverted "V" or "horseshoe"); and (3) measurement in the first molar region. The data were assessed for variability based on the number of landmarks, the shape of the reference curve, and the measurements obtained. RESULTS The number of landmarks used to guide the panoramic reconstruction varied among radiologists (p < 0.05), but most of them draw curves in inverted "U" shape (68-100%). The reproducibility of the measurements taken in the edentulous mandibular first molar region was excellent (84.7%). The number of landmarks and the shape of the curve did not have a significant influence on the reproducibility of the measurements (p > 0.05). CONCLUSION Variations of the operator-dependent steps during the panoramic reconstructions occur but do not play a significant part changing the measurements taken for oral implant planning.
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Affiliation(s)
- Cyntia Adames
- Division of Oral Radiology, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, R. Dr. José Rocha Junqueira 13, Ponte Preta, Campinas, Campinas, SP, 13045-755, Brazil
| | - Hugo Gaêta-Araujo
- Division of Oral Radiology, School of Dentistry, University of São Paulo (FORP-USP), Ribeirão Preto, São Paulo, Brazil
| | - Ademir Franco
- Division of Oral Radiology, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, R. Dr. José Rocha Junqueira 13, Ponte Preta, Campinas, Campinas, SP, 13045-755, Brazil.
| | - Mariana Quirino Silveira Soares
- Division of Oral Radiology, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, R. Dr. José Rocha Junqueira 13, Ponte Preta, Campinas, Campinas, SP, 13045-755, Brazil
| | - José Luiz Cintra Junqueira
- Division of Oral Radiology, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, R. Dr. José Rocha Junqueira 13, Ponte Preta, Campinas, Campinas, SP, 13045-755, Brazil
| | - Anne Caroline Oenning
- Division of Oral Radiology, Faculdade São Leopoldo Mandic, Instituto de Pesquisas São Leopoldo Mandic, Campinas, R. Dr. José Rocha Junqueira 13, Ponte Preta, Campinas, Campinas, SP, 13045-755, Brazil
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Rodríguez M, Marshall M, Godoy C, Richa R, Niklander SE. Orthopantomography Versus Cone Beam Computed Tomography for the Assessment of the Proximity of Posterior Maxillary Apexes with the Maxillary Sinus: A Cross-sectional Study. Curr Med Imaging 2024; 20:1-7. [PMID: 38389337 DOI: 10.2174/1573405620666230705120909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 05/18/2023] [Accepted: 05/28/2023] [Indexed: 02/24/2024]
Abstract
BACKGROUND The lack of knowledge of the relation of the maxillary sinus with the apexes of maxillary posterior teeth can lead to important complications during common dental procedures. This can be avoided using different imaging techniques, such as orthopantomography (OPG) and cone beam computed tomography (CBCT). The present study aims to compare the performance of OPG with CBCT in measuring the vertical distance of the apexes of posterior-superior teeth to the maxillary sinus. METHODS This study corresponded to a cross-sectional study. OPGs and CBCT scans were obtained from the same individuals, and the qualitative and quantitative vertical distance of the apexes in relation to the maxillary sinus was categorized and measured in mm. RESULTS A total of 28 pairs of OPGs and CBCT scans from the same patients were obtained. About 381 roots were analysed, which included 89 upper first premolars, 51 upper second premolars, 115 upper first molars, and 126 upper second molars. Projection/protrusion was observed with more frequency in molars, specially 1º molars in both OPG (n= 75, 65.2%) and CBCT (n= 31, 27%); however, 106 more cases (27.9%) were classified as projected in the OPG compared to CBCT (p < 0.05). When comparing the performance of the OPG and CBTC for analysing all roots qualitatively, there was a 57.8% agreement between both techniques. This difference was statistically significant (p <0.0001). Statistically significant differences were also observed when comparing the millimetric differences. CONCLUSION This study showed that OPG is not an accurate technique to observe the relationship between the maxillary sinus and the apexes of the upper posterior teeth. In those cases where precision is required when performing dental procedures in this area, CBCT should be used. When not available, the clinicians should be aware of the limitations of the OPG and add other complementary techniques.
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Affiliation(s)
- Macarena Rodríguez
- Department of Morphology, Faculty of Medicine, Universidad Andres Bello, Santiago, Chile
- Unit of Oral Pathology and Oral Medicine, Faculty of Dentistry, Universidad Andres Bello, Quillota 980, Viña del Mar, Chile
| | - Maureen Marshall
- Unit of Oral Pathology and Oral Medicine, Faculty of Dentistry, Universidad Andres Bello, Quillota 980, Viña del Mar, Chile
| | - Constanza Godoy
- Faculty of Dentistry, Universidad Andres Bello, Santiago, Chile
| | - Roxana Richa
- Faculty of Dentistry, Universidad Andres Bello, Santiago, Chile
| | - Sven Eric Niklander
- Unit of Oral Pathology and Oral Medicine, Faculty of Dentistry, Universidad Andres Bello, Quillota 980, Viña del Mar, Chile
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Ismayılov R, Özgür B. Indications and use of cone beam computed tomography in children and young individuals in a university-based dental hospital. BMC Oral Health 2023; 23:1033. [PMID: 38129827 PMCID: PMC10740269 DOI: 10.1186/s12903-023-03784-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 12/15/2023] [Indexed: 12/23/2023] Open
Abstract
BACKGROUND The aim of this study was to evaluate the indications of cone beam computed tomography (CBCT) in children and young individuals in a university-based dental hospital and their association with age, gender and field of view. METHODS 7131 CBCT scans, taken during 3-year period, were reviewed and a total of 649 pediatric patients (0-18 years) with complete request forms were included. Data related to gender, age, referring department, CBCT indications, field of view (FOV), region of interest (ROI), need for re-exposure and patients received more than one CBCT examination were recorded. RESULTS The mean age was 13.57 ± 3.52 years and "malocclusion and dentofacial anomaly" (28.7%) was the most common clinical indication. Facial trauma, dental trauma and supernumerary tooth in males; "malocclusion and dentofacial anomaly" and implant planning in females were recorded more frequently compared to other gender. Maxilla was the most frequently monitored ROI (35.1%) for patients. Small (≤ 10 cm) FOV was preferred in 58.1% of all patients. Large FOV was selected in the majority of patients who underwent CBCT scan for "malocclusion and dentofacial anomaly" (89.6%). The repeated scans constituted 2.3% of patients and 105 patients (16.2%) underwent multiple CBCT scans on different dates for mainly orthodontic follow-up. CONCLUSIONS The justification of CBCT scans was not fully compatible with current guidelines and mainly larger FOV was preferred. The number of CBCT examination in children and young individuals tends to increase. TRIAL REGISTRATION NUMBER Not applicable.
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Affiliation(s)
- Rovshan Ismayılov
- Department of Pediatric Dentistry, Hacettepe University Faculty of Dentistry, Altındağ, Ankara, 06100, Turkey
| | - Beste Özgür
- Department of Pediatric Dentistry, Hacettepe University Faculty of Dentistry, Altındağ, Ankara, 06100, Turkey.
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Shi X, Chen H, Lobbezoo F, de Lange J, van der Stelt P, Berkhout E, Guo J, Ge S, Li G, Li Y, Aarab G. Comparison of the upper airway morphology between Dutch and Chinese adults with obstructive sleep apnea. Sleep Breath 2023; 27:2223-2230. [PMID: 37093512 PMCID: PMC10656314 DOI: 10.1007/s11325-023-02834-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 03/22/2023] [Accepted: 04/14/2023] [Indexed: 04/25/2023]
Abstract
PURPOSE The pathogenesis of obstructive sleep apnea (OSA) is complex and may vary between different races. It has been suggested that the anatomical balance between skeletal tissues and soft tissues around the upper airway is a key pathophysiologic factor of OSA. Therefore, the aim of this study was to compare the anatomical balance of the upper airway between Dutch and Chinese patients with OSA based on cone beam computed tomography (CBCT) images. METHODS This was a cross-sectional study performed in two centers and included Dutch and Chinese adults with OSA. CBCT scans in the supine position were obtained for both Dutch and Chinese OSA groups. The primary outcome variable was the anatomical balance of the upper airway, defined as the ratio of the tongue area and the maxillomandibular enclosure area. RESULTS A total of 28 Dutch adults (mean age ± SD of 46.6 ± 14.1 years, body mass index [BMI] of 26.8 ± 3.5 kg/m2, and apnea-hypopnea index [AHI] of 15.7 ± 7.1 events/h) and 24 Chinese adults (age 41.0 ± 12.4 years, BMI 26.5 ± 3.3 kg/m2, and AHI 16.5 ± 7.8 events/h). There were no significant differences in AHI, age, BMI, and sex between the two groups (P = 0.14-0.76). The Dutch group had a significantly larger tongue area and tongue length compared to the Chinese group (P = 0.01 and P < 0.01). On the other hand, the Chinese group had a smaller maxilla length compared to the Dutch group (P < 0.01). However, the anatomical balance of the upper airway of both groups was not significantly different (P = 0.16). CONCLUSION Within the limitations of this study, no significant difference was found in the anatomical balance of the upper airway between Dutch and Chinese patients with mild to moderate OSA. TRIAL REGISTRATION The present study was registered at the ClinicalTrials.gov identifier NCT03463785.
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Affiliation(s)
- Xiaoxin Shi
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Department of Oral Radiology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
- Department of Oral and Maxillofacial Surgery, Amsterdam University Medical Centers/Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam, Amsterdam, The Netherlands
| | - Hui Chen
- Department of Orthodontics and Periodontics and Oral Radiology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road west, Jinan, 250012, China.
| | - Frank Lobbezoo
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Jan de Lange
- Department of Oral and Maxillofacial Surgery, Amsterdam University Medical Centers/Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam, Amsterdam, The Netherlands
| | - Paul van der Stelt
- Department of Oral Radiology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Erwin Berkhout
- Department of Oral Radiology, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | - Jing Guo
- Department of Orthodontics and Periodontics and Oral Radiology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road west, Jinan, 250012, China
| | - Shaohua Ge
- Department of Orthodontics and Periodontics and Oral Radiology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road west, Jinan, 250012, China
| | - Guoju Li
- Department of Orthodontics and Periodontics and Oral Radiology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, No. 44-1 Wenhua Road west, Jinan, 250012, China
| | - Yanzhong Li
- Department of Otorhinolaryngology, Qilu Hospital of Shandong University, NHC Key Laboratory of Otorhinolaryngology, Jinan, China
| | - Ghizlane Aarab
- Department of Orofacial Pain and Dysfunction, Academic Centre for Dentistry Amsterdam (ACTA), University of Amsterdam and Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
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Moura NB, Ferreira CL, Lima VCS, Nunes CMM, de Marco AC, Costa ALF, Lopes SLPC, Jardini MAN. Effect of the pulsed electromagnetic field in the repair of a calvaria critical bone defect in rats: cone beam computed tomographic and histomorphometric analysis.: PEMF in the repair of a calvaria critical bone defect: CBCT analyses. J Stomatol Oral Maxillofac Surg 2023; 124:101483. [PMID: 37100171 DOI: 10.1016/j.jormas.2023.101483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 04/18/2023] [Accepted: 04/21/2023] [Indexed: 04/28/2023]
Abstract
INTRODUCTION The present study evaluated the effect of two protocols of Pulsed Electromagnetic Field (PEMF) therapy on bone neoformation on calvaria critical defects in rats. MATERIAL & METHODS 96 rats were randomly divided into 3 groups: Control Group (CG; n=32); Test Group - PEMF 1 hour (TG1h; n=32) and Test Group - PEMF 3 hour (TG3h; n=32). A Critical-size Bone Defect (CSD) was surgically created in the calvaria of rats. The animals in the test groups were exposure to PEMF for 5 days a week. The animals were euthanized at 14, 21, 45 and 60 days. The specimens were processed for volume and texture (TAn) analysis, by Cone Beam Computed Tomography (CBCT) and histomorphometric analysis, RESULTS: Histomorphometric and volume analyses revealed that there was no statistically significant difference in the repair of bone defects between groups receiving PEMF therapy and CG. TAn revealed a statistically significant difference between the groups only for the entropy parameter, in which TG1h group presented a higher value compared to CG on 21 days. TG1h and TG3h did not accelerate bone repair in calvarial critical size defect and the parameters of PEMF should be considered. DISCUSSION This study showed that PEMF application on CSD in rats does not accelerate bone repair. Although literature showed a positive association in biostimulation on bone tissue with the parameters applied, studies with other PEMF parameters are essential to verify improving this study design.
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Affiliation(s)
- Nicole Bertonde Moura
- Graduate student of institute of Science and Technology of Sao Jose dos Campos, Universidade Estadual Paulista (Unesp), São José dos Campos, SP, Brazil
| | - Camila Lopes Ferreira
- Department of Diagnosis and Surgery, Institute of Science and Technology of Sao Jose dos Campos, Universidade Estadual Paulista (unesp), Sao Jose dos Campos, SP, Brazil
| | - Victória Clarada Silva Lima
- Graduate student of institute of Science and Technology of Sao Jose dos Campos, Universidade Estadual Paulista (Unesp), São José dos Campos, SP, Brazil
| | - Camilla Magnoni Moretto Nunes
- Department of Diagnosis and Surgery, Institute of Science and Technology of Sao Jose dos Campos, Universidade Estadual Paulista (unesp), Sao Jose dos Campos, SP, Brazil
| | - Andrea Carvalho de Marco
- Department of Diagnosis and Surgery, Institute of Science and Technology of Sao Jose dos Campos, Universidade Estadual Paulista (unesp), Sao Jose dos Campos, SP, Brazil
| | - André Luiz Ferreira Costa
- Postgraduate Program in Dentistry, Cruzeiro do Sul University (UNICSUL), Sao Paulo, Sao Paulo, Brazil
| | - Sérgio Lúcio Pereirade Castro Lopes
- Department of Diagnosis and Surgery, Institute of Science and Technology of Sao Jose dos Campos, Universidade Estadual Paulista (unesp), Sao Jose dos Campos, SP, Brazil
| | - Maria Aparecida Neves Jardini
- Department of Diagnosis and Surgery, Institute of Science and Technology of Sao Jose dos Campos, Universidade Estadual Paulista (unesp), Sao Jose dos Campos, SP, Brazil.
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De Bideran MA, Oyallon M, Perrin JP, Renaudin S, Corre P, Bertin H. Alveolar bone changes in the mandibular incisors after genioplasty, a three-dimensional study. J Stomatol Oral Maxillofac Surg 2023; 124:101562. [PMID: 37453565 DOI: 10.1016/j.jormas.2023.101562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 07/11/2023] [Indexed: 07/18/2023]
Abstract
INTRODUCTION Functional genioplasty aims to achieve lip competence at rest and reduces lip pressure against the mandibular incisors. The purpose of this study was to describe the radiographic changes in alveolar bone of the mandibular incisors after functional genioplasty. MATERIALS AND METHODS Cone beam CT images from 36 patients were compared between immediate (T0) and delayed postoperative period (T1). The mean time to complete the second imaging was 10.9 ± 4.7 months. Dental and bone parameters were assessed: the vestibular bone height (BH), the bone thickness (BT) with regard to the apex of the central incisor (BT2) and at equidistance between the cementoenamel junction and the dental apex (BT1). The existence of fenestrations, the apical-root resorption and the incisor-mandibular plane angle (IMPA) were also collected. RESULTS No significant change occurred in the BH. BT was improved of a mean 47.9% and 53.6% at the BT1 level on #31 and #41, respectively (p1=0.01 and p2=0.02, respectively); and of 53.0% at the level of the apex of both mandibular central incisors (p1=0.003 on #31 and p2=0.009 on #41). No difference in the number of fenestrations was observed between T0 and T1. A significant decrease in the root length on both mandibular incisors was observed on the delayed CBCT (from 21.96 ± 1.35 to 21.68 ± 1.32 mm for #31, p=0.0007; from 22.26 ± 1.66 to 21.96 ± 1.48 mm for #41, p=0.002). Finally, the IMPA remained stable between the two examinations with a mean 106.1 ± 7.38° vs 105.8 ± 6.51° (p=0.38). CONCLUSION Functional genioplasty favours the alveolar bone formation of the mandibular central incisors, probably by direct bone grafting, but also by the relaxation of the perioral and chin musculature.
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Affiliation(s)
- Marie-Anne De Bideran
- Département d'orthopédie dento-faciale, Faculté dentaire de Nantes, CHU de Nantes, 1 place Alexis Ricordeau, 44093 Nantes, France.
| | - Mathilde Oyallon
- Département d'orthopédie dento-faciale, Faculté dentaire de Nantes, CHU de Nantes, 1 place Alexis Ricordeau, 44093 Nantes, France.
| | - Jean Philippe Perrin
- Nantes Université, CHU Nantes, Service de chirurgie maxillo-faciale et stomatologie, F-44000 Nantes, France.
| | - Stéphane Renaudin
- Département d'orthopédie dento-faciale, Faculté dentaire de Nantes, CHU de Nantes, 1 place Alexis Ricordeau, 44093 Nantes, France.
| | - Pierre Corre
- Nantes Université, CHU Nantes, Service de chirurgie maxillo-faciale et stomatologie, F-44000 Nantes, France; Nantes Université, Oniris, UnivAngers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France.
| | - Hélios Bertin
- Nantes Université, CHU Nantes, Service de chirurgie maxillo-faciale et stomatologie, F-44000 Nantes, France; Nantes Université, UnivAngers, CHU Nantes, INSERM, CNRS, CRCI2NA, F-44000 Nantes, France.
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Liu G, Liu W, Zhang T, Zhao T. Endoscopy-guided intraoral extraction of ectopic mandibular third molar in the subcondylar region planned with three-dimensional imaging: A case report and literature review. J Stomatol Oral Maxillofac Surg 2023; 124:101580. [PMID: 37541352 DOI: 10.1016/j.jormas.2023.101580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Accepted: 07/30/2023] [Indexed: 08/06/2023]
Abstract
Ectopic mandibular third molar (EMTM) in the subcondylar region is a rare clinical condition, especially for a subtype confined between the mandibular foramen and condylar neck. The etiology is currently uncertain and the optimal management of this specific subtype remains not well defined. We reported a case of this specific subtype of EMTM that was minimally invasively extracted by endoscopy-guided intraoral surgery, planned preoperatively using three-dimensional (3D) imaging of cone beam computed tomography (CBCT), with no complications postoperatively caused by the routine surgery. We also reviewed nine relevant literature to expand the clinical features and therapeutic management of this specific subtype of EMTM. Etiologically, persistent cystic pressure may be a major cause of EMTM displaced into the subcondylar region. For extraction of this specific EMTM, the combination of 3D CBCT-based imaging and endoscopy-assisted intraoral minimally invasive surgery could be considered as the priority option for patients without facial fistula.
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Affiliation(s)
- Guijun Liu
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, No.324. Jing Six Road, Jinan, Shandong, China
| | - Weidong Liu
- Department of Stomatology, Zibo First Hospital, Zibo, Shandong, China
| | - Tianqi Zhang
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, No.324. Jing Six Road, Jinan, Shandong, China
| | - Tengda Zhao
- Department of Oral and Maxillofacial Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, No.324. Jing Six Road, Jinan, Shandong, China.
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Yao H, Liu H, Wang X. Toothache as an initial symptom of extramedullary plasmacytoma in the maxillary sinus: A case report. Asian J Surg 2023; 46:6087-6088. [PMID: 37777401 DOI: 10.1016/j.asjsur.2023.09.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 09/12/2023] [Indexed: 10/02/2023] Open
Affiliation(s)
- Haolan Yao
- Department of Endodontics, Xiangya Stomatological Hospital, Central South University, Changsha, China
| | - He Liu
- Division of Endodontics, Department of Oral Biological & Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, Canada
| | - Xiangzhu Wang
- Department of Endodontics, Xiangya Stomatological Hospital, Central South University, Changsha, China.
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Haemmerli J, Ferdowssian K, Wessels L, Mertens R, Hecht N, Woitzik J, Schneider UC, Bayerl SH, Vajkoczy P, Czabanka M. Comparison of intraoperative CT- and cone beam CT-based spinal navigation for the treatment of atlantoaxial instability. Spine J 2023; 23:1799-1807. [PMID: 37619869 DOI: 10.1016/j.spinee.2023.08.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 07/18/2023] [Accepted: 08/13/2023] [Indexed: 08/26/2023]
Abstract
BACKGROUND CONTEXT Due to the complexity of neurovascular structures in the atlantoaxial region, spinal navigation for posterior C1-C2 instrumentation is nowadays a helpful tool to increase accuracy of surgery and safety of patients. Many available intraoperative navigation devices have proven their reliability in this part of the spine. Two main imaging techniques are used: intraoperative CT (iCT) and cone beam computed tomography (CBCT). PURPOSE Comparison of iCT- and CBCT-based technologies for navigated posterior instrumentation in C1-C2 instability. STUDY DESIGN Retrospective study. PATIENT SAMPLE A total of 81 consecutive patients from July 2014 to April 2020. OUTCOME MEASURES Screw accuracy and operating time. METHODS Patients with C1-C2 instability received posterior instrumentation using C2 pedicle screws, C1 lateral mass or pedicle screws. All screws were inserted using intraoperative imaging either using iCT or CBCT systems and spinal navigation with autoregistration technology. Following navigated screw insertion, a second intraoperative scan was performed to assess the accuracy of screw placement. Accuracy was defined as the percentage of correctly placed screws or with minor cortical breach (<2 mm) as graded by an independent observer compared to misplaced screws. RESULTS A total of 81 patients with C1-C2 instability were retrospectively analyzed. Of these, 34 patients were operated with the use of iCT and 47 with CBCT. No significant demographic difference was found between groups. In the iCT group, 97.7% of the C1-C2 screws were correctly inserted; 2.3% showed a minor cortical breach (<2 mm); no misplacement (>2 mm). In the CBCT group, 98.9% of screws were correctly inserted; no minor pedicle breach; 1.1% showed misplacement >2 mm. Accuracy of screw placement demonstrated no significant difference between groups. Both technologies allowed sufficient identification of screw misplacement intraoperatively leading to two screw revisions in the iCT and three in the CBCT group. Median time of surgery was significantly shorter using CBCT technology (166.5 minutes [iCT] vs 122 minutes [CBCT]; p<.01). CONCLUSIONS Spinal navigation using either iCT- or CBCT-based systems with autoregistration allows safe and reliable screw placement and intraoperative assessment of screw positioning. Using the herein presented procedural protocols, CBCT systems allow shorter operating time.
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Affiliation(s)
- Julien Haemmerli
- Department of Neurosurgery, Charité - Universitätsmedizin Berlin, Charitéplatz 1, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin 10117, Germany
| | - Kiarash Ferdowssian
- Department of Neurosurgery, Charité - Universitätsmedizin Berlin, Charitéplatz 1, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin 10117, Germany
| | - Lars Wessels
- Department of Neurosurgery, Charité - Universitätsmedizin Berlin, Charitéplatz 1, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin 10117, Germany
| | - Robert Mertens
- Department of Neurosurgery, Charité - Universitätsmedizin Berlin, Charitéplatz 1, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin 10117, Germany
| | - Nils Hecht
- Department of Neurosurgery, Charité - Universitätsmedizin Berlin, Charitéplatz 1, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin 10117, Germany
| | - Johannes Woitzik
- Department of Neurosurgery, Charité - Universitätsmedizin Berlin, Charitéplatz 1, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin 10117, Germany
| | - Ulf C Schneider
- Department of Neurosurgery, Charité - Universitätsmedizin Berlin, Charitéplatz 1, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin 10117, Germany
| | - Simon H Bayerl
- Department of Neurosurgery, Charité - Universitätsmedizin Berlin, Charitéplatz 1, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin 10117, Germany
| | - Peter Vajkoczy
- Department of Neurosurgery, Charité - Universitätsmedizin Berlin, Charitéplatz 1, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin 10117, Germany.
| | - Marcus Czabanka
- Department of Neurosurgery, Charité - Universitätsmedizin Berlin, Charitéplatz 1, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin 10117, Germany
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47
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Rattana-arpha P, Boonsiriseth K, Kretapirom K, Kriangcherdsak Y. Assessment of Nasal Septum Change after Le Fort I Osteotomy Using Cone Beam Computed Tomography. J Maxillofac Oral Surg 2023; 22:799-805. [PMID: 38105827 PMCID: PMC10719195 DOI: 10.1007/s12663-023-02058-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 10/27/2023] [Indexed: 12/19/2023] Open
Abstract
Objective Le Fort I osteotomy (LF-IO) is widely used for the correction of dentofacial deformities, which may cause changes in the postoperative nasal septum (NS). The objective of this study was to evaluate the effects of LF-IO on the NS deviation and to determine whether the NS was affected by differences in the direction of maxilla movement. Materials and Methods A retrospective study including 57 patients who underwent LF-IO and received cone beam computed tomography (CBCT) preoperatively and 6-12 months postoperative evaluation was performed. The NS angle of each patient was measured both pre- and postoperatively in the two coronal sections (nasion and ostium levels). The patients were divided into five paired groups and calculated. Group 1 to 4 were divided depending on the differences in the direction of maxilla movement (Group 1. Impaction ≥ 5 mm vs. Impaction < 5 mm; Group 2. Anterior movement vs. Non-anterior movement; Group 3. Impaction symmetry vs. Impaction asymmetry; and Group 4. Impaction vs. Inferior repositioning). Group 5 was divided as One-piece osteotomy vs. Multi-segmental osteotomy. Results The mean NS angles at both nasion and ostium levels of all patients were significant increased after LF-IO. However, there were no statistical significant differences of the five paired groups. Conclusions LF-IO osteotomy influenced increasing of the NS deviation at both the nasion and ostium levels. However, differences in the direction of the maxilla movement and maxilla segmentation showed no statistically significant changes.
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Affiliation(s)
- Pornpop Rattana-arpha
- Dental Division, Royal Thai Air Force Hospital, 555 Decha Tungkha Road, Si Kan, Don Mueang, Bangkok, 10210 Thailand
| | - Kiatanant Boonsiriseth
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Mahidol University, 6 Yothi Street, Ratchathewi, Bangkok, 10400 Thailand
| | - Kornkamol Kretapirom
- Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Mahidol University, 6 Yothi Street, Ratchathewi, Bangkok, 10400 Thailand
| | - Yutthasak Kriangcherdsak
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Mahidol University, 6 Yothi Street, Ratchathewi, Bangkok, 10400 Thailand
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Ma H, Liu H, Shen Y. Tooth root injury caused by intermaxillary fixation screw placement. Asian J Surg 2023; 46:5822-5823. [PMID: 37659938 DOI: 10.1016/j.asjsur.2023.08.152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 08/24/2023] [Indexed: 09/04/2023] Open
Affiliation(s)
- Haifeng Ma
- Department of Stomatology, Affiliated Hospital of Jining Medical University, Jining, China
| | - He Liu
- Division of Endodontics, Department of Oral Biological & Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, Canada.
| | - Ya Shen
- Division of Endodontics, Department of Oral Biological & Medical Sciences, Faculty of Dentistry, University of British Columbia, Vancouver, Canada
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49
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Dogan ME, Uluısık N, Dogan MS. Assessment of gubernacular canal frequency with CBCT in a group of Turkish population. BMC Oral Health 2023; 23:861. [PMID: 37957628 PMCID: PMC10644453 DOI: 10.1186/s12903-023-03608-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 11/01/2023] [Indexed: 11/15/2023] Open
Abstract
OBJECTIVE The aim of this study is to investigate the frequency of the gubernacular canal observed on cone-beam computed tomography (CBCT) images in a group of Turkish populations according to age and gender. MATERIALS AND METHODS CBCT images of 500 cases were evaluated retrospectively, and a total of 117 impacted or erupting teeth were included in the study, and the presence of gubernacular canal was recorded according to age, gender and eruption status of the tooth. SPSS program was used for statistical analysis. RESULTS The mean age of 117 buried/continuing patients was 17 ± 15.32, 55 (47%) were female and were 62 (53%) male patients. Presence of gubernacular canal was observed in 91 (77.8%) cases and this duct was not detected in 26 (22.2%) cases. While 40.2% of female were found to have canals, 37.6% of male had canals. When the presence of canals was examined, the presence of canals was found to be significantly higher in the erupting teeth. A significant difference was found when analyzed according to the mean age. CONCLUSIONS CBCT is a useful method of detecting the gubernacular canal. The presence of gubernacular canal was significantly higher in erupting teeth.
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Affiliation(s)
- Mehmet Emin Dogan
- Faculty of Dentistry, Department of Dentomaxillofacial Radiology, Harran University, Sanliurfa, Turkey
| | - Nurbanu Uluısık
- Faculty of Dentistry, Department of Dentomaxillofacial Radiology, Harran University, Sanliurfa, Turkey
| | - Mehmet Sinan Dogan
- Faculty of Dentistry, Department of Pediatric Dentistry, Harran University, Sanliurfa, Turkey.
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50
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Kannampurath A, Leela Srikantannair S, Mathew P, SivaPrasad T. Maxillary sinus in gender determination: a morphometric analysis using cone beam computed tomography. Forensic Sci Med Pathol 2023:10.1007/s12024-023-00749-5. [PMID: 37952242 DOI: 10.1007/s12024-023-00749-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/02/2023] [Indexed: 11/14/2023]
Abstract
Gender determination of skeletal remains is an important forensic procedure in the identification process. Maxillary sinus remains intact even when the skull and other bones may be badly disfigured. Cone beam computed tomography (CBCT) can provide precise information about complex anatomical structures, as it is characterized by rapid volumetric image acquisition with high resolution. The present study aimed to assess the accuracy of maxillary sinus measurements using cone beam computed tomography in gender determination and to develop a formula using discriminate function analysis. Bilateral maxillary sinus images (left and right) were acquired for 200 patients (100 females and 100 males) and different parameters (width, length, height, area, perimeter, and volume) were measured and evaluated. Mean and standard deviation of both maxillary sinuses measurements were calculated and compared. The data was subjected to discriminative statistical analysis and analyzed using an unpaired t-test. The difference between all these variables was statistically significant between males and females. Based on discriminant analysis, the most pronounced variable in the differentiation of gender groups was maxillary sinus height. Gender assessment was established correctly with an accuracy of 75% for females and 64% for males with an overall accuracy of 69.5%. Adding other independent variables to the model did not result in an improvement in overall accuracy. Cone beam computed tomography measurement of maxillary sinus can be used as an aid in forensic anthropology for gender determination.
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Affiliation(s)
- Arathi Kannampurath
- Department of Oral Medicine and Radiology, Government Dental College, Gandhinagar, Kottayam, 686008, Kerala, India.
| | - Sreela Leela Srikantannair
- Department of Oral Medicine and Radiology, Government Dental College, Gandhinagar, Kottayam, 686008, Kerala, India
| | - Philips Mathew
- Department of Oral Medicine and Radiology, Government Dental College, Gandhinagar, Kottayam, 686008, Kerala, India
| | - Twinkle SivaPrasad
- Department of Oral Medicine and Radiology, Government Dental College, Gandhinagar, Kottayam, 686008, Kerala, India
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