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Rosas-Díaz J, Guerrero ME, Castillo-Andamayo D, Galindo-Gómez M, García-Luna M, Cervantes-Ganoza L, Cayo-Rojas C. Importance of local and systemic factors in preventing implant displacement in the mandibular body: a scoping review of existing literature. BMC Oral Health 2024; 24:871. [PMID: 39090743 PMCID: PMC11295648 DOI: 10.1186/s12903-024-04671-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Accepted: 07/25/2024] [Indexed: 08/04/2024] Open
Abstract
BACKGROUND The aim of this research was to analyse the current literature on displaced dental implants in the mandibular body, including local and systemic variables related to their cause, and to identify the most frequent location. METHODS The study conducted a search of three databases (Pubmed, Scopus, and Web of Science) using specific index terms such as 'dental implant', 'displacement', 'dislocation', 'displaced', and 'mandible'. The analysis focused on the direction of displacement and the characteristics of the bone tissue (bone quality, density, and quantity) in cases where dental implants were displaced. RESULTS A total of 371 articles were obtained. Thirteen of these articles were selected and read in full. To define bone quality, the Lekholm and Zarb classification, modified by Rosas et al., was used. The type II-B bone, which is characterized by thick cortical bone surrounding cancellous bone with extremely wide medullary spaces, presented the largest number of complications. Twenty-two cases were found in which the displacement direction was horizontal. Of these, four were displaced vestibularly, fourteen lingually, and four remained in the center. Additionally, 24 cases presented vertical displacement, with 12 displaced towards the inferior border of the mandible, 9 towards the middle or adjacent to the inferior dental nerve canal, and 3 above the inferior dental nerve canal. CONCLUSION The accidental displacement of implants within the mandibular body is associated with various risk factors, including the characteristics of the bony trabeculum and the size of the medullary spaces. It is reasonable to suggest that only an adequate pre-surgical diagnostic evaluation, with the help of high-resolution tomographic images that allow a previous evaluation of these structures, will help to have better control over the other factors, thus minimizing the risk of displacement.
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Affiliation(s)
- José Rosas-Díaz
- School of Stomatology, Universidad Privada San Juan Bautista, Jose Antonio Lavalle Avenue 302- 304 (Ex Hacienda Villa), Chorrillos, Lima, Peru.
- Faculty of Stomatology, Universidad Peruana Cayetano Heredia, Lima, Peru.
| | - Maria Eugenia Guerrero
- Medico Surgical Department, Faculty of Dentistry, Universidad Nacional Mayor de San Marcos, Lima, Peru
| | | | - Maisely Galindo-Gómez
- School of Stomatology, Universidad Privada San Juan Bautista, Jose Antonio Lavalle Avenue 302- 304 (Ex Hacienda Villa), Chorrillos, Lima, Peru
| | - Marco García-Luna
- School of Stomatology, Universidad Privada San Juan Bautista, Jose Antonio Lavalle Avenue 302- 304 (Ex Hacienda Villa), Chorrillos, Lima, Peru
| | | | - César Cayo-Rojas
- School of Stomatology, Universidad Privada San Juan Bautista, Jose Antonio Lavalle Avenue 302- 304 (Ex Hacienda Villa), Chorrillos, Lima, Peru.
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da Fonte JBM, Fontenele RC, Farias-Gomes A, Ruiz DC, Andrade-Bortoletto MFS, Sousa Melo SL, Freitas DQ. Do the number of zirconia implants and the thickness of CBCT image reconstruction affect the detection of peri-implant bone defect? A diagnostic accuracy ex vivo study. Clin Oral Implants Res 2024. [PMID: 39072795 DOI: 10.1111/clr.14336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Revised: 06/12/2024] [Accepted: 07/09/2024] [Indexed: 07/30/2024]
Abstract
OBJECTIVES To evaluate the influence of multiplanar reconstruction thickness on the detection of peri-implant bone defects with a standalone zirconia implant and compare it to when another implant is in the vicinity using cone-beam computed tomography (CBCT). MATERIALS AND METHODS Five dry human mandibles were used to create twenty implant sites in the second premolar and first molar regions. The OP300 Maxio was used to acquire CBCT images (90 kVp, 6.3 mA, 5 × 5 cm FOV, and 0.125 mm3 voxel size) before and after creating 3 mm peri-implant bone defects in the buccal aspect of the premolar region. Half of the scans featured a single zirconia implant in the premolar region, while the others had two implants in the premolar and molar regions. Three reconstruction thicknesses (0.125 mm, 1 mm, and 2 mm) were considered for the multiplanar reconstruction analyses. Five oral and maxillofacial radiologists assessed the detection of peri-implant bone defects using a 5-point scale. Diagnostic parameters were calculated and compared using Two-way ANOVA (α = .05). RESULTS The studied factors showed no significant influence on the diagnosis of peri-implant bone defects (p > .05). Diagnostic performance was notably higher with a single implant, especially with a 2-mm reconstruction thickness (AUC = 0.88, sensitivity = 0.68, specificity = 0.94). Although the differences were not statistically significant, the results were more modest when two implants were present (AUC = 0.80, sensitivity = 0.58, specificity = 0.82). CONCLUSIONS The presence of an adjacent zirconia implant and variations in reconstruction thickness did not influence the detection of 3 mm buccal peri-implant bone defects on CBCT images.
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Affiliation(s)
- Juliana Batista Melo da Fonte
- Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
- Department of Oral and Maxillofacial Diagnostic Sciences, School of Dental Medicine, University of Connecticut, Farmington, Connecticut, USA
| | - Rocharles Cavalcante Fontenele
- OMFS IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, KU Leuven and Oral and Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Amanda Farias-Gomes
- Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Débora Costa Ruiz
- Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | | | - Saulo L Sousa Melo
- Department of Oral and Craniofacial Sciences, School of Dentistry, Oregon Health & Science University, Portland, Oregon, USA
| | - Deborah Queiroz Freitas
- Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
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Fudalej PS, Garlicka A, Dołęga-Dołegowski D, Dołęga-Dołegowska M, Proniewska K, Voborna I, Dubovska I. Mixed reality-based technology to visualize and facilitate treatment planning of impacted teeth: Proof of concept. Orthod Craniofac Res 2024. [PMID: 38712682 DOI: 10.1111/ocr.12803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/19/2024] [Indexed: 05/08/2024]
Abstract
OBJECTIVE We propose a method utilizing mixed reality (MR) goggles (HoloLens 2, Microsoft) to facilitate impacted canine alignment, as planning the traction direction and force delivery could benefit from 3D data visualization using mixed reality (MR). METHODS Cone-beam CT scans featuring isometric resolution and low noise-to-signal ratio were semi-automatically segmented in Inobitec software. The exported 3D mesh (OBJ file) was then optimized for the HoloLens 2. Using the Unreal Engine environment, we developed an application for the HoloLens 2, implementing HoloLens SDK and UX Tools. Adjustable pointers were added for planning attachment placement, traction direction, and point of force application. The visualization was presented to participants of a course on impacted teeth treatment, followed by a 10-question survey addressing potential advantages (5-point scale: 1 = totally agree, 5 = totally disagree). RESULTS Out of 38 respondents, 44.7% were orthodontists, 34.2% dentists, 15.8% dental students, and 5.3% dental technicians. Most respondents (44.7%) were between 35 and 44 years old, and only 1 (2.6%) respondent was 55-64 years old. Median answers for six questions were 'totally agree' (25th percentile 1, 75th percentile 2) and for four questions 'agree' (25th percentile 1, 75th percentile 2). No correlation was found between age, profession, and responses. CONCLUSION Our method generated substantial interest among clinicians. The initial responses affirm the potential benefits, supporting the continued exploration of MR-based techniques for the treatment of impacted teeth. However, the recommendation for widespread use awaits validation through clinical trials.
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Affiliation(s)
- Piotr S Fudalej
- Department of Orthodontics, Jagiellonian University Medical College, Jagiellonian University in Cracow, Krakow, Poland
- Department of Orthodontics and Dentofacial Orthopedics, Medical Faculty, School of Dental Medicine, University of Bern, Bern, Switzerland
- Faculty of Medicine and Dentistry, Institute of Dentistry and Oral Sciences, Palacký University Olomouc, Olomouc, Czech Republic
| | - Agnieszka Garlicka
- Department of Orthodontics, Jagiellonian University Medical College, Jagiellonian University in Cracow, Krakow, Poland
| | | | | | - Klaudia Proniewska
- Jagiellonian University Medical College, Jagiellonian University in Cracow, Krakow, Poland
| | - Iva Voborna
- Faculty of Medicine and Dentistry, Institute of Dentistry and Oral Sciences, Palacký University Olomouc, Olomouc, Czech Republic
| | - Ivana Dubovska
- Faculty of Medicine and Dentistry, Institute of Dentistry and Oral Sciences, Palacký University Olomouc, Olomouc, Czech Republic
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Carneiro ALE, Reis INR, Bitencourt FV, Salgado DMRA, Costa C, Spin-Neto R. Accuracy of linear measurements for implant planning based on low-dose cone beam CT protocols: a systematic review and meta-analysis. Dentomaxillofac Radiol 2024; 53:207-221. [PMID: 38429951 PMCID: PMC11056743 DOI: 10.1093/dmfr/twae007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 02/09/2024] [Accepted: 02/21/2024] [Indexed: 03/03/2024] Open
Abstract
OBJECTIVES The aim of this systematic review was to verify the accuracy of linear measurements performed on low-dose CBCT protocols for implant planning, in comparison with those performed on standard and high-resolution CBCT protocols. METHODS The literature search included four databases (Pubmed, Web of Science, Embase, and Scopus). Two reviewers independently screened titles/abstracts and full texts according to eligibility criteria, extracted the data, and examined the methodological quality. Risk of bias assessment was performed using the Quality Assessment Tool For In Vitro Studies. Random-effects meta-analysis was used for pooling measurement error data. RESULTS The initial search yielded 4684 titles. In total, 13 studies were included in the systematic review, representing a total of 81 samples, while 9 studies were included in the meta-analysis. The risk of bias ranged from medium to low. The main results across the studies indicate a strong consistency in linear measurements performed on low-dose images in relation to the reference methods. The overall pooled planning measurement error from low-dose CBCT protocols was -0.24 mm (95% CI, -0.52 to 0.04) with a high level of heterogeneity, showing a tendency for underestimation of real values. Various studies found no significant differences in measurements across different protocols (eg, voxel sizes, mA settings, or dose levels), regions (incisor, premolar, molar) and types (height vs. width). Some studies, however, noted exceptions in measurements performed on the posterior mandible. CONCLUSION Low-dose CBCT protocols offer adequate precision and accuracy of linear measurements for implant planning. Nevertheless, diagnostic image quality needs must be taken into consideration when choosing a low-dose CBCT protocol.
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Affiliation(s)
- Ana Luiza E Carneiro
- Department of Stomatology, School of Dentistry, University of São Paulo (USP), São Paulo, 05508-000, Brazil
| | - Isabella N R Reis
- Department of Stomatology, School of Dentistry, University of São Paulo (USP), São Paulo, 05508-000, Brazil
| | - Fernando Valentim Bitencourt
- Section for Oral Ecology and Inflammation, Department of Dentistry and Oral Health, Aarhus University, Aarhus, 8000, Denmark
- Steno Diabetes Center Aarhus, Aarhus, 8200, Denmark
| | - Daniela M R A Salgado
- Department of Stomatology, School of Dentistry, University of São Paulo (USP), São Paulo, 05508-000, Brazil
| | - Claudio Costa
- Department of Stomatology, School of Dentistry, University of São Paulo (USP), São Paulo, 05508-000, Brazil
| | - Rubens Spin-Neto
- Department of Dentistry and Oral Health—Section for Oral Radiology and Endodontics, Aarhus University, Aarhus, 8000, Denmark
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Straub A, Linz C, Lapa C, Hartmann S, Kübler AC, Müller-Richter UDA, Faber J, Bley T, Brumberg J, Kertels O, Brands RC. Performance of cone-beam computed tomography (CBCT) in comparison to conventional computed tomography (CT) and magnetic resonance imaging (MRI) for the detection of bone invasion in oral squamous cell cancer (OSCC): a prospective study. BMC Oral Health 2024; 24:341. [PMID: 38493083 PMCID: PMC10944617 DOI: 10.1186/s12903-024-04057-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 02/21/2024] [Indexed: 03/18/2024] Open
Abstract
BACKGROUND Oral squamous carcinoma (OSCC) is often diagnosed at late stages and bone erosion or invasion of the jawbone is frequently present. Computed tomography (CT) and magnetic resonance imaging (MRI) are known to have high diagnostic sensitivities, specificities, and accuracies in detecting these bone affections in patients suffering from OSCC. To date, the existing data regarding the impact of cone-beam computed tomography (CBCT) have been weak. Therefore, this study aimed to investigate whether CBCT is a suitable tool to detect bone erosion or invasion in patients with OSCC. METHODS We investigated in a prospective trial the impact of CBCT in the diagnosis of bone erosion or invasion in patients with OSCC who underwent surgery. Every participant received a CBCT, CT, and MRI scan during staging. Imaging modalities were evaluated by two specialists in oral and maxillofacial surgery (CBCT) and two specialists in radiology (CT and MRI) in a blinded way, to determine whether a bone affection was present or not. Reporting used the following 3-point system: no bony destruction ("0"), cortical bone erosion ("1"), or medullary bone invasion ("2"). Histological examination or a follow-up served to calculate the sensitivities, specificities, and accuracies of the imaging modalities. RESULTS Our results revealed high diagnostic sensitivities (95.6%, 84.4%, and 88.9%), specificities (87.0%, 91.7%, and 91.7%), and accuracies (89.5%, 89.5%, and 90.8%) for CBCT, CT, and MRI. A pairwise comparison found no statistical difference between CBCT, CT, and MRI. CONCLUSION Our data support the routine use of CBCT in the diagnosis of bone erosion and invasion in patients with OSCC as diagnostic accuracy is equal to CT and MRI, the procedure is cost-effective, and it can be performed during initial contact with the patient.
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Affiliation(s)
- Anton Straub
- Department of Oral and Maxillofacial Plastic Surgery, University Hospital Würzburg, Pleicherwall 2, 97070, Würzburg, Germany.
| | - Christian Linz
- Department of Oral, Maxillofacial and Plastic Surgery, University of Köln, Faculty of Medicine and University Hospital Köln, Kepenerstr. 62, 50937, Köln, Germany
| | - Constantin Lapa
- Nuclear Medicine, Faculty of Medicine, University of Augsburg, Stenglinstr. 2, 86156, Augsburg, Germany
| | - Stefan Hartmann
- Department of Oral and Maxillofacial Plastic Surgery, University Hospital Würzburg, Pleicherwall 2, 97070, Würzburg, Germany
| | - Alexander C Kübler
- Department of Oral and Maxillofacial Plastic Surgery, University Hospital Würzburg, Pleicherwall 2, 97070, Würzburg, Germany
| | - Urs D A Müller-Richter
- Department of Oral and Maxillofacial Plastic Surgery, University Hospital Würzburg, Pleicherwall 2, 97070, Würzburg, Germany
| | - Julian Faber
- Department of Oral, Maxillofacial and Plastic Surgery, University of Köln, Faculty of Medicine and University Hospital Köln, Kepenerstr. 62, 50937, Köln, Germany
| | - Thorsten Bley
- Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Oberdürrbacherstr. 6, 97080, Würzburg, Germany
| | - Joachim Brumberg
- Department of Nuclear Medicine, Medical Center, Faculty of Medicine, University of Freiburg, University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| | - Olivia Kertels
- Department of Diagnostic and Interventional Neuroradiology, Klinikum rechts der Isar, Technical University of München, Ismaninger Str. 22, 81675, München, Germany
| | - Roman C Brands
- Department of Oral and Maxillofacial Plastic Surgery, University Hospital Würzburg, Pleicherwall 2, 97070, Würzburg, Germany
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de Paula J, da Silva LAB, Wayar MAS, Campagnoli EB, Dos Santos FA. Epithelial cyst following subepithelial connective tissue graft: A case report. Clin Adv Periodontics 2024. [PMID: 38430209 DOI: 10.1002/cap.10284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 01/25/2024] [Accepted: 02/15/2024] [Indexed: 03/03/2024]
Abstract
BACKGROUND Various surgical approaches have been employed to manage gingival recession, including subepithelial connective tissue grafting, which has yielded favorable outcomes. METHODS AND RESULTS We present the case of a 17-year-old patient who developed gingival recession on tooth #6 following an esthetic crown lengthening procedure. The recession was treated with a subepithelial connective tissue graft; however, this case details the occurrence of two epithelial cysts adjacent to the region subjected to the surgical procedure, 6 months after surgery. The treatment involved periodontal surgical intervention, during which the lesions were completely excised and the associated osseous defect was filled using an inorganic bovine bone matrix along with a collagen membrane. The healing progressed without any complications. Histopathological analysis revealed the presence of cystic lesions, which were characterized by a cystic cavity lined with stratified orthokeratinized epithelium with cuboidal cells in some areas surrounded by fibrous connective tissue. The patient's progress was monitored through tomography performed 6 months, 1 year, and 5 years post-procedure, all of which demonstrated the absence of any signs of lesion recurrence. CONCLUSION This case study emphasizes the effectiveness and predictability of subepithelial connective tissue grafting in the treatment of gingival recession. However, dental professionals should be cautious about the potential risk of gingival recession following esthetic crown lengthening procedures and recognize the potential complications associated with subepithelial connective tissue grafting, such as the observed development of epithelial cysts in this specific case. KEY POINTS Why is this case new information? We present a case of an epithelial cyst following a subepithelial connective tissue graft, which resulted in buccal cortical bone resorption. The treatment involved excisional biopsy and the use of an inorganic bovine bone matrix with a collagen membrane. What are the keys to the successful management of this case? Successful treatment included periodontal surgery, bone defect filling using an inorganic bovine bone matrix and a collagen membrane, and regular monitoring with CT scans at 6 months, 1 year, and 5 years post-surgery; all showed no recurrence. Success factors included careful surgery, appropriate biomaterial usage, and ongoing follow-up. What are the primary limitations to success in this case? The limitations involve potential complications from subepithelial connective tissue grafting such as cyst development. This report stresses the importance of meticulous patient selection and periodontal phenotype evaluation to minimize risks. Continuous follow-up is critical to detect recurrence and other issues.
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Affiliation(s)
- Julien de Paula
- Department of Dentistry, Universidade Estadual de Ponta Grossa, Ponta Grossa, Brazil
| | - Luise A B da Silva
- Department of Dentistry, Universidade Estadual de Ponta Grossa, Ponta Grossa, Brazil
| | - Mariane A S Wayar
- Department of Dentistry, Universidade Estadual de Ponta Grossa, Ponta Grossa, Brazil
| | - Eduardo B Campagnoli
- Department of Dentistry, Universidade Estadual de Ponta Grossa, Ponta Grossa, Brazil
| | - Fábio A Dos Santos
- Department of Dentistry, Universidade Estadual de Ponta Grossa, Ponta Grossa, Brazil
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Tsolakis IA, Rontogianni A, Tsolakis AI, Papadopoulos MA. Comparing CBCT to model scanner for dental model scanning. An in vitro imaging accuracy study. Int Orthod 2024; 22:100840. [PMID: 38215684 DOI: 10.1016/j.ortho.2023.100840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 12/14/2023] [Accepted: 12/17/2023] [Indexed: 01/14/2024]
Abstract
OBJECTIVE The aim of this study is to compare the accuracy of cone beam computed tomography (CBCT) for dental model scanning to the accuracy of model scanners. METHODS Subjects from private practice were collected and scanned according to specific selection criteria. A total of 10 STL files were produced and used as reference files. They were printed with a three-dimensional (3D) printer and then scanned with CBCT and model scanner. For trueness evaluation, all models were scanned once with both equipments. Each file derived from each scan was compared with the corresponding reference model file. For the precision measurements, the physical model from the first master reference model file was scanned 10 times with each equipment and compared with the reference STL file. A reverse engineering software was used for all 3D best-fit comparisons. RESULTS With regard to the measurement of trueness of each method, the calculated mean root mean square (RMS) value was 0.06±0.01mm for the CBCT, and 0.15±0.02mm for the model scanner. There was a significant difference between the two methods (P<0.01). For the evaluation of precision of each scanner, the mean RMS value was 0.0056±0.001mm for the CBCT, and 0.153±0.002mm for model scanner. There was a significant difference between the two methods (P<0.01). CONCLUSIONS Cone Beam Computed Tomography seems to be an accurate method for scanning dental models. CBCT performs better than model scanners to scan dental models in terms of trueness and precision.
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Affiliation(s)
- Ioannis A Tsolakis
- Department of Orthodontics, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece; Department of Orthodontics, School of Dental Medicine, Case Western Reserve University, Cleveland, OH, USA.
| | - Aliki Rontogianni
- Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Apostolos I Tsolakis
- Department of Orthodontics, School of Dental Medicine, Case Western Reserve University, Cleveland, OH, USA; Department of Orthodontics, School of Dentistry, National and Kapodistrian University of Athens, Athens, Greece
| | - Moschos A Papadopoulos
- Department of Orthodontics, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Russe MF, Rau A, Ermer MA, Rothweiler R, Wenger S, Klöble K, Schulze RKW, Bamberg F, Schmelzeisen R, Reisert M, Semper-Hogg W. A content-aware chatbot based on GPT 4 provides trustworthy recommendations for Cone-Beam CT guidelines in dental imaging. Dentomaxillofac Radiol 2024; 53:109-114. [PMID: 38180877 PMCID: PMC11003655 DOI: 10.1093/dmfr/twad015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/01/2023] [Accepted: 12/18/2023] [Indexed: 01/07/2024] Open
Abstract
OBJECTIVES To develop a content-aware chatbot based on GPT-3.5-Turbo and GPT-4 with specialized knowledge on the German S2 Cone-Beam CT (CBCT) dental imaging guideline and to compare the performance against humans. METHODS The LlamaIndex software library was used to integrate the guideline context into the chatbots. Based on the CBCT S2 guideline, 40 questions were posed to content-aware chatbots and early career and senior practitioners with different levels of experience served as reference. The chatbots' performance was compared in terms of recommendation accuracy and explanation quality. Chi-square test and one-tailed Wilcoxon signed rank test evaluated accuracy and explanation quality, respectively. RESULTS The GPT-4 based chatbot provided 100% correct recommendations and superior explanation quality compared to the one based on GPT3.5-Turbo (87.5% vs. 57.5% for GPT-3.5-Turbo; P = .003). Moreover, it outperformed early career practitioners in correct answers (P = .002 and P = .032) and earned higher trust than the chatbot using GPT-3.5-Turbo (P = 0.006). CONCLUSIONS A content-aware chatbot using GPT-4 reliably provided recommendations according to current consensus guidelines. The responses were deemed trustworthy and transparent, and therefore facilitate the integration of artificial intelligence into clinical decision-making.
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Affiliation(s)
- Maximilian Frederik Russe
- Department of Diagnostic and Interventional Radiology, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Alexander Rau
- Department of Diagnostic and Interventional Radiology, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
- Department of Neuroradiology, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Michael Andreas Ermer
- Department of Oral and Maxillofacial Surgery, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - René Rothweiler
- Department of Oral and Maxillofacial Surgery, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Sina Wenger
- Department of Oral and Maxillofacial Surgery, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Klara Klöble
- Department of Oral and Maxillofacial Surgery, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Ralf K W Schulze
- Division of Oral Diagnostic Sciences, Department of Oral Surgery and Stomatology and Oral Diagnostics, School of Dental Medicine, University of Bern, Bern 3010, Switzerland
| | - Fabian Bamberg
- Department of Diagnostic and Interventional Radiology, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Rainer Schmelzeisen
- Department of Oral and Maxillofacial Surgery, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Marco Reisert
- Division of Medical Physics, Department of Diagnostic and Interventional Radiology, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
- Department of Stereotactic and Functional Neurosurgery, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
| | - Wiebke Semper-Hogg
- Department of Oral and Maxillofacial Surgery, Medical Center – University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg 79106, Germany
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Wang Q, Zhang T. Application of an ultrasonic bone knife combined with a dental electric motor in the extraction of mandibular middle and low impacted teeth. BMC Oral Health 2024; 24:18. [PMID: 38178077 PMCID: PMC10768189 DOI: 10.1186/s12903-023-03788-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Accepted: 12/15/2023] [Indexed: 01/06/2024] Open
Abstract
OBJECTIVE To investigate the clinical application of an ultrasonic bone knife (UBK) combined with a dental electric motor (DEM) in the extraction of mandibular middle and low impacted teeth. METHODS From January 2022 to May 2023,200 patients with wisdom teeth were randomly divided into three groups: experimental group A (UBK combined with DEM), experimental group B (UBK combined with high-speed turbine mobile phone (HSTMP)), and the control group (bone chisel split crown (BCSC)). The operation time, psychological state during operation, pain, swelling, limitation of mouth opening and other complications on the first, second and third days after operation were recorded. RESULTS The operation time of experimental group A (EAG) (12.95 ± 2.12) minutes was shorter than that of experimental group B (EBG) (17.06 ± 2.25) minutes and the control group (CG) (23.43 ± 2.18) minutes, and the difference was statistically significant (P < 0.05). The psychological state of the EAG was significantly lower than that of the EBG and CG (P < 0.05). The postoperative pain, swelling, limitation of mouth opening and complications in the EAG were significantly lower than those in the EBG and CG (P < 0.05). CONCLUSION UBK combined with DEM in the extraction of mandibular middle and low obstructed teeth has good results, good prognosis, high safety, short operation time, better psychological status of patients, low postoperative pain, swelling, mouth opening restriction and complication rate, and is currently the preferred extraction method.
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Affiliation(s)
- Qian Wang
- School of Stomatology, Jinan University, Guangzhou, 510000, China
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Zhongshan City, Zhongshan, 528400, China
| | - Tonghan Zhang
- School of Stomatology, Jinan University, Guangzhou, 510000, China.
- Department of Oral and Maxillofacial Surgery, Hospital of Stomatology, Zhongshan City, Zhongshan, 528400, China.
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Andrade-Bortoletto MFS, Fontenele RC, Farias-Gomes A, Freitas DQ. Mapping artifacts generated in a tooth adjacent to titanium and zirconia implants located in the endomass and exomass in cone beam computed tomography: an ex vivo study. Oral Surg Oral Med Oral Pathol Oral Radiol 2024; 137:73-82. [PMID: 37838553 DOI: 10.1016/j.oooo.2023.08.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 08/01/2023] [Accepted: 08/06/2023] [Indexed: 10/16/2023]
Abstract
OBJECTIVE We evaluated artifact expression in a root adjacent to a dental implant located in the endomass or exomass in cone beam computed tomography (CBCT). STUDY DESIGN We placed a single titanium or zirconia implant adjacent to a premolar root in a dried human mandible and acquired CBCT scans using an OP300 Maxio and a Picasso Trio 3D unit exposing a 5x5cm field of view with the implant in the endomass or exomass (implant groups) or without an implant (control group). We measured the mean gray values (MGVs) for 8 lines of interest (LOIs) around the root canal of the premolar and compared the MGVs by analysis of variance, with significance established at P < 0.05. RESULTS For the OP300 Maxio scans, the MGVs of both implant groups in the endomass were lower than the MGVs of the control group. In the exomass, the titanium group had MGVs similar to the control group, but the zirconia group produced significantly lower MGVs than control and titanium groups (P <.0001), indicating the presence of hypodense artifacts. For the Picasso Trio 3D scans, the MGVs of both implant groups in the endomass were similar to the MGVs of the control group. In the exomass, the zirconia group generated lower MGVs than control and titanium groups (P <.0001), indicating hypodense artifacts. CONCLUSIONS When performing CBCT examination, titanium implants produce less artifact expression in the exomass, and zirconia implants have less artifact expression in the endomass.
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Affiliation(s)
| | - Rocharles Cavalcante Fontenele
- OMFS-IMPATH Research Group, Department of Imaging and Pathology, Faculty of Medicine, KU Leuven and Oral and Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Amanda Farias-Gomes
- Department of Oral Diagnosis, Division of Oral Radiology, Dentistry School of Piracicaba, State University of Campinas (UNICAMP), Sao Paulo, Brazil
| | - Deborah Queiroz Freitas
- Department of Oral Diagnosis, Division of Oral Radiology, Dentistry School of Piracicaba, State University of Campinas (UNICAMP), Sao Paulo, Brazil
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11
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Li Y, Li B, Zhu J, Yin Y, Li Z. Assessing the Impact of a 1.5 T Transverse Magnetic Field in Radiotherapy for Esophageal Cancer Patients. Technol Cancer Res Treat 2024; 23:15330338241227291. [PMID: 38258381 PMCID: PMC10807384 DOI: 10.1177/15330338241227291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 12/11/2023] [Accepted: 12/26/2023] [Indexed: 01/24/2024] Open
Abstract
Purpose: Magnetic resonance (MR)-guided radiotherapy enables visualization of static anatomy, capturing tumor motion, and extracting quantitative image features for treatment verification and outcome monitoring. However, magnetic fields in online MR imaging (MRI) require efforts to ensure accurate dose measurements. This study aimed to assess the dosimetric impact of a 1.5 T magnetic field in esophageal cancer radiotherapy using MR-linac, exploring treatment adaptation potential and personalized medicine benefits. Methods: A prospective cohort study enrolled 100 esophageal squamous cell carcinoma patients undergoing 4DCT and 3DCT scans before radiotherapy. The heart was contoured on 3DCT, 4DCT end expiration (EE), and 4DCT end inhalation (EI) images by the same radiation oncologist. Reference RT plans were designed on 3DCT, with adjustments for different phases generating 5 plan types per patient. Variations in dose-volume parameters for organs at risk and the target area among different plans were compared using Monaco 5.40.04. Results: Slight dose distortions at air-tissue interfaces were observed in the magnetic field's presence. Dose at air-tissue interfaces (chest wall and heart wall) was slightly higher in some patients (3.0% tissue increased by 4.3 Gy on average) compared to nonmagnetic conditions. Average clinical target volume coverage V100 dropped from 99% to 95% compared to reference plans (planEI and planEE). Dose-volume histogram variation between the original plan and reference plans was within 2.3%. Superior-inferior (SI) direction displacement was significantly larger than lateral and anterior-posterior directions (P < .05). Conclusion: Significant SI direction shift in lower esophageal cancerous regions during RT indicates the magnetic field's dosimetric impact, including the electron return effect at tissue-air boundaries. Changes in OAR dose could serve as valuable indicators of organ impairment and target dose alterations, especially for cardiac tissue when using the 1.5 T linac method. Reoptimizing the plan with the magnetic field enhances the feasibility of achieving a clinically acceptable treatment plan for esophageal cancer patients.
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Affiliation(s)
- Yukun Li
- Department of Radiation Oncology Physics and Technology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan City, China
| | - Baosheng Li
- Department of Radiation Oncology Physics and Technology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan City, China
| | - Jian Zhu
- Department of Radiation Oncology Physics and Technology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan City, China
| | - Yong Yin
- Department of Radiation Oncology Physics and Technology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan City, China
| | - Zhenjiang Li
- Department of Radiation Oncology Physics and Technology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan City, China
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12
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Al-Haj Husain A, Stadlinger B, Winklhofer S, Bosshard FA, Schmidt V, Valdec S. Imaging in Third Molar Surgery: A Clinical Update. J Clin Med 2023; 12:7688. [PMID: 38137758 PMCID: PMC10744030 DOI: 10.3390/jcm12247688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 12/08/2023] [Accepted: 12/13/2023] [Indexed: 12/24/2023] Open
Abstract
Third molar surgery is one of the most common surgical procedures performed in oral and maxillofacial surgery. Considering the patient's young age and the often-elective nature of the procedure, a comprehensive preoperative evaluation of the surgical site, relying heavily on preoperative imaging, is key to providing accurate diagnostic work-up, evidence-based clinical decision making, and, when appropriate, indication-specific surgical planning. Given the rapid developments of dental imaging in the field, the aim of this article is to provide a comprehensive, up-to-date clinical overview of various imaging techniques related to perioperative imaging in third molar surgery, ranging from panoramic radiography to emerging technologies, such as photon-counting computed tomography and magnetic resonance imaging. Each modality's advantages, limitations, and recent improvements are evaluated, highlighting their role in treatment planning, complication prevention, and postoperative follow-ups. The integration of recent technological advances, including artificial intelligence and machine learning in biomedical imaging, coupled with a thorough preoperative clinical evaluation, marks another step towards personalized dentistry in high-risk third molar surgery. This approach enables minimally invasive surgical approaches while reducing inefficiencies and risks by incorporating additional imaging modality- and patient-specific parameters, potentially facilitating and improving patient management.
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Affiliation(s)
- Adib Al-Haj Husain
- Clinic of Cranio-Maxillofacial and Oral Surgery, Center of Dental Medicine, University of Zurich, 8032 Zurich, Switzerland; (A.A.-H.H.); (B.S.); (F.A.B.); (V.S.)
- Department of Neuroradiology, Clinical Neuroscience Center, University Hospital Zurich, University of Zurich, 8091 Zurich, Switzerland
| | - Bernd Stadlinger
- Clinic of Cranio-Maxillofacial and Oral Surgery, Center of Dental Medicine, University of Zurich, 8032 Zurich, Switzerland; (A.A.-H.H.); (B.S.); (F.A.B.); (V.S.)
| | | | - Fabienne A. Bosshard
- Clinic of Cranio-Maxillofacial and Oral Surgery, Center of Dental Medicine, University of Zurich, 8032 Zurich, Switzerland; (A.A.-H.H.); (B.S.); (F.A.B.); (V.S.)
| | - Valérie Schmidt
- Clinic of Cranio-Maxillofacial and Oral Surgery, Center of Dental Medicine, University of Zurich, 8032 Zurich, Switzerland; (A.A.-H.H.); (B.S.); (F.A.B.); (V.S.)
| | - Silvio Valdec
- Clinic of Cranio-Maxillofacial and Oral Surgery, Center of Dental Medicine, University of Zurich, 8032 Zurich, Switzerland; (A.A.-H.H.); (B.S.); (F.A.B.); (V.S.)
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13
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Zhu T, Zhou G, Chen C, Wang J, Gu P, Zhang J, Wu H, Zhao X, Leng D, Wu D. Quantitative evaluation of artifact expression in conebeam computed tomography of mesoporous calcium silicate nanoparticles as a promising root canal sealer. Oral Surg Oral Med Oral Pathol Oral Radiol 2023; 136:500-507. [PMID: 37453920 DOI: 10.1016/j.oooo.2023.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 05/08/2023] [Accepted: 05/13/2023] [Indexed: 07/18/2023]
Abstract
OBJECTIVES We aimed to quantitatively compare the area and volume of artifacts in cone beam computed tomography produced by mesoporous calcium silicate nanoparticles (MCSNs), AH Plus sealer, and iRoot SP sealer when used as root canal sealers. METHODS We prepared 40 single-rooted mandibular premolars and divided them into an MCSN sealer group, an AH Plus sealer group, an iRoot SP sealer group, and a no-sealer (control) group. We filled the canals with gutta-percha using the single-cone method and subjected them to conebeam computed tomography before and after the placement of root fillings using the same exposure parameters. We evaluated the images to quantify the areas of hyperdense and hypodense artifacts and non-affected teeth and reconstructed 3-dimensional image models of the materials to study volume distortion artifacts. RESULTS The MCSN sealer group produced a significantly smaller hyperdense and volume distortion artifacts than the AH Plus and iRoot SP groups (P < .01), but the area and volume of hypodense artifacts did not differ significantly among the groups (P > .05). CONCLUSIONS When used as a root canal sealer, MCSNs generate a significantly smaller area and volume of hyperdense artifacts than AH Plus and iRoot SP sealers. By significantly reducing the generation of high-density artifacts, MCSNs may facilitate the evaluation of root canal filling quality and the diagnosis of root canal abnormalities.
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Affiliation(s)
- Tingting Zhu
- Department of Endodontics, the Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China; Jiangsu Province Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - Guangchao Zhou
- Department of Oral and Maxillofacial Imaging, the Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China; Jiangsu Province Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - Cheng Chen
- Department of Endodontics, the Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China; Jiangsu Province Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - Jingyan Wang
- Department of Oral and Maxillofacial Imaging, the Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China; Jiangsu Province Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - Peiyu Gu
- Department of Oral and Maxillofacial Imaging, the Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China; Jiangsu Province Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - Juan Zhang
- Department of Oral and Maxillofacial Imaging, the Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China; Jiangsu Province Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - Huili Wu
- Department of Endodontics, the Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China; Jiangsu Province Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - Xiao Zhao
- Department of Endodontics, the Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China; Jiangsu Province Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - Diya Leng
- Department of Endodontics, the Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China; Department of Oral and Maxillofacial Imaging, the Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China; Jiangsu Province Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - Daming Wu
- Department of Endodontics, the Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China; Department of Oral and Maxillofacial Imaging, the Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China; Jiangsu Province Key Laboratory of Oral Disease, Nanjing Medical University, Nanjing, China; Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China.
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14
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Remschmidt B, Rieder M, Gsaxner C, Gaessler J, Payer M, Wallner J. Augmented Reality-Guided Apicoectomy Based on Maxillofacial CBCT Scans. Diagnostics (Basel) 2023; 13:3037. [PMID: 37835780 PMCID: PMC10572956 DOI: 10.3390/diagnostics13193037] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/13/2023] [Accepted: 09/21/2023] [Indexed: 10/15/2023] Open
Abstract
Implementation of augmented reality (AR) image guidance systems using preoperative cone beam computed tomography (CBCT) scans in apicoectomies promises to help surgeons overcome iatrogenic complications associated with this procedure. This study aims to evaluate the intraoperative feasibility and usability of HoloLens 2, an established AR image guidance device, in the context of apicoectomies. Three experienced surgeons carried out four AR-guided apicoectomies each on human cadaver head specimens. Preparation and operating times of each procedure, as well as the subjective usability of HoloLens for AR image guidance in apicoectomies using the System Usability Scale (SUS), were measured. In total, twelve AR-guided apicoectomies on six human cadaver head specimens were performed (n = 12). The average preparation time amounted to 162 (±34) s. The surgical procedure itself took on average 9 (±2) min. There was no statistically significant difference between the three surgeons. Quantification of the usability of HoloLens revealed a mean SUS score of 80.4 (±6.8), indicating an "excellent" usability level. In conclusion, this study implies the suitability, practicality, and simplicity of AR image guidance systems such as the HoloLens in apicoectomies and advocates their routine implementation.
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Affiliation(s)
- Bernhard Remschmidt
- Division of Oral and Maxillofacial Surgery, Department of Dental Medicine and Oral Health, Medical University of Graz, 8036 Graz, Austria
- Division of Oral Surgery and Orthodontics, Department of Dental Medicine and Oral Health, Medical University of Graz, 8010 Graz, Austria
| | - Marcus Rieder
- Division of Oral and Maxillofacial Surgery, Department of Dental Medicine and Oral Health, Medical University of Graz, 8036 Graz, Austria
- Division of Oral Surgery and Orthodontics, Department of Dental Medicine and Oral Health, Medical University of Graz, 8010 Graz, Austria
| | - Christina Gsaxner
- Institute of Computer Graphics and Vision, Graz University of Technology, 8010 Graz, Austria
| | - Jan Gaessler
- Division of Oral and Maxillofacial Surgery, Department of Dental Medicine and Oral Health, Medical University of Graz, 8036 Graz, Austria
- Division of Oral Surgery and Orthodontics, Department of Dental Medicine and Oral Health, Medical University of Graz, 8010 Graz, Austria
| | - Michael Payer
- Division of Oral Surgery and Orthodontics, Department of Dental Medicine and Oral Health, Medical University of Graz, 8010 Graz, Austria
| | - Juergen Wallner
- Division of Oral and Maxillofacial Surgery, Department of Dental Medicine and Oral Health, Medical University of Graz, 8036 Graz, Austria
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15
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Iandolo A. Recent Advances in Endodontic Diagnosis and Modern Treatment Plans. Diagnostics (Basel) 2023; 13:2786. [PMID: 37685324 PMCID: PMC10486588 DOI: 10.3390/diagnostics13172786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Accepted: 08/28/2023] [Indexed: 09/10/2023] Open
Abstract
Generally, to achieve success in endodontics, it is essential to perform all stages of treatment with cautiousness and excellence [...].
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Affiliation(s)
- Alfredo Iandolo
- Department of Medicine and Surgery, University of Salerno, 84081 Salerno, Italy
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16
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Marques-Guasch J, Bofarull-Ballús A, Giralt-Hernando M, Hernández-Alfaro F, Gargallo-Albiol J. Dynamic Implant Surgery-An Accurate Alternative to Stereolithographic Guides-Systematic Review and Meta-Analysis. Dent J (Basel) 2023; 11:150. [PMID: 37366673 DOI: 10.3390/dj11060150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/26/2023] [Accepted: 05/25/2023] [Indexed: 06/28/2023] Open
Abstract
(1) Background: Dynamic guided surgery is a computer-guided freehand technology that allows highly accurate procedures to be carried out in real time through motion-tracking instruments. The aim of this research was to compare the accuracy between dynamic guided surgery (DGS) and alternative implant guidance methods, namely, static guided surgery (SGS) and freehand (FH). (2) Methods: Searches were conducted in the Cochrane and Medline databases to identify randomized controlled clinical trials (RCTs) and prospective and retrospective case series and to answer the following focused question: "What implant guidance tool is more accurate and secure with regard to implant placement surgery?" The implant deviation coefficient was calculated for four different parameters: coronal and apical horizontal, angular, and vertical deviations. Statistical significance was set at a p-value of 0.05 following application of the eligibility criteria. (3) Results: Twenty-five publications were included in this systematic review. The results show a non-significant weighted mean difference (WMD) between the DGS and the SGS in all of the assessed parameters: coronal (n = 4 WMD = 0.02 mm; p = 0.903), angular (n = 4 WMD = -0.62°; p = 0.085), and apical (n = 3 WMD = 0.08 mm; p = 0.401). In terms of vertical deviation, not enough data were available for a meta-analysis. However, no significant differences were found among the techniques (p = 0.820). The WMD between DGS and FH demonstrated significant differences favoring DGS in three parameters as follows: coronal (n = 3 WMD = -0.66 mm; p =< 0.001), angular (n = 3 WMD = -3.52°; p < 0.001), and apical (n = 2 WMD = -0.73 mm; p =< 0.001). No WMD was observed regarding the vertical deviation analysis, but significant differences were seen among the different techniques (p = 0.038). (4) Conclusions: DGS is a valid alternative treatment achieving similar accuracy to SGS. DGS is also more accurate, secure, and precise than the FH method when transferring the presurgical virtual implant plan to the patient.
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Affiliation(s)
- Jordi Marques-Guasch
- Department of Oral and Maxillofacial Surgery, Universitat Internacional de Catalunya, Josep Trueta s/n, Sant Cugat del Vallès, 08195 Barcelona, Spain
| | - Anna Bofarull-Ballús
- Department of Oral and Maxillofacial Surgery, Universitat Internacional de Catalunya, Josep Trueta s/n, Sant Cugat del Vallès, 08195 Barcelona, Spain
| | - Maria Giralt-Hernando
- Department of Oral and Maxillofacial Surgery, Universitat Internacional de Catalunya, Josep Trueta s/n, Sant Cugat del Vallès, 08195 Barcelona, Spain
| | - Federico Hernández-Alfaro
- Department of Oral and Maxillofacial Surgery, Universitat Internacional de Catalunya, Josep Trueta s/n, Sant Cugat del Vallès, 08195 Barcelona, Spain
| | - Jordi Gargallo-Albiol
- Department of Oral and Maxillofacial Surgery, Universitat Internacional de Catalunya, Josep Trueta s/n, Sant Cugat del Vallès, 08195 Barcelona, Spain
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI 48109, USA
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17
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Hamilton A, Singh A, Friedland B, Jamjoom FZ, Griseto N, Gallucci GO. The impact of cone beam computer tomography field of view on the precision of digital intra-oral scan registration for static computer-assisted implant surgery: A CBCT analysis. Clin Oral Implants Res 2022; 33:1273-1281. [PMID: 36239539 PMCID: PMC10091816 DOI: 10.1111/clr.14009] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 09/11/2022] [Accepted: 10/08/2022] [Indexed: 12/13/2022]
Abstract
OBJECTIVES Registration of intra-oral surface scans to cone beam computer tomography (CBCT) is critical in the digital workflow for static computer-aided implant surgery (sCAIS). This study aimed to assess the impact of CBCT field of view (FoV) on the precision of digital intra-oral scan registration. MATERIALS AND METHODS Cone beam computer tomography data and intra-oral scans from 20 patients were included. Small FoV CBCT's were created by digitally segmenting a large FoV into three sextants. Virtual implant planning was performed. Digital intra-oral scans were repeatedly registered onto their corresponding large and small FoV CBCT datasets. The distances and angulations between the matching implant positions of each repeated registration were used to determine the precision of the registration process. Wilcoxon Signed Rank Paired Tests were used to compare the differences between large FoV and small FoV. The threshold for statistical significance was set at p = .05. RESULTS Differences in 3D implant position based on the registration precision between small FoV and large FoV present at both the implant entry point (0.37 ± 0.25 mm vs 0.35 ± 0.23 mm, p = .482) and implant tip (0.49 ± 0.34 mm vs 0.37 ± 0.24 mm, p < .001). Differences in overall angular precision were observed between small FOV and large FoV (1.43 ± 1.36° vs 0.51 ± 0.38°, p < .001). CONCLUSION CBCT with a small FoV is accompanied by greater precision errors in intra-oral scan registration. However, when sufficient well-distributed teeth are visible in small FoV CBCT, the precision of digital intra-oral scan registration appears to be within clinically acceptable limits for sCAIS.
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Affiliation(s)
- Adam Hamilton
- Division of Regenerative and Implant Sciences, Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, Massachusetts, USA.,Division of Oral Restorative and Rehabilitative Sciences, The University of Western Australia, Perth, Western Australia, Australia
| | - Ashi Singh
- Division of Regenerative and Implant Sciences, Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, Massachusetts, USA.,Private Practice, Sydney, New South Wales, Australia
| | - Bernard Friedland
- Department of Oral Medicine, Infection, and Immunity, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - Faris Z Jamjoom
- Division of Regenerative and Implant Sciences, Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, Massachusetts, USA.,Department of Restorative and Prosthetic Dental Sciences, College of Dentistry, King Saud bin Abdulaziz University for Health Sciences, National Guard Health Affairs, Riyadh, Saudi Arabia.,King Abdullah International Medical Research Center, National Guard Health Affairs, Riyadh, Saudi Arabia
| | - Neil Griseto
- Division of Regenerative and Implant Sciences, Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, Massachusetts, USA
| | - German O Gallucci
- Department of Restorative Dentistry and Biomaterials Sciences, Harvard School of Dental Medicine, Boston, Massachusetts, USA
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18
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Rodrigues DM, Petersen RL, de Moraes JR, Barboza EP. Gingival landmarks and cutting points for gingival phenotype determination: A clinical and tomographic cross-sectional study. J Periodontol 2022; 93:1916-1928. [PMID: 35451505 DOI: 10.1002/jper.21-0615] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 03/20/2022] [Accepted: 03/23/2022] [Indexed: 01/05/2023]
Abstract
BACKGROUND This cross-sectional study assessed the role of gingival landmarks (GLs) and cutting points (CPs) for gingival phenotype (GP) determination. METHODS Six maxillary anterior teeth (70 subjects) were evaluated using soft tissue cone-beam computed tomography (ST-CBCT). Gingival thickness was measured at different GLs: 1) tissue zone (gingival margin [GM], 1 and 2 mm apical to GM, cemento-enamel junction, above the bone crest); 2) bone zone (buccal bone crest [BBC], 1, 2, and 3 mm apical to BBC). CPs of 0.6, 0.8, 1.0, 1.2, and 1.5 mm were used to discriminate between thin and thick GP. The clinical determination of GP was made based on transparency of the periodontal probe (TRAN). RESULTS The prevalence of thin and thick GP depended on the GL and CP. Considering the CP (1 mm), thin GP at the tissue zone ranged from 99% at the GM to 10.2% above the bone crest. In the bone zone, thick GP ranged from 28% at the BBC to 6% at 3 mm apical to the BBC. The predictability of a correct assessment of GP by TRAN compared with ST-CBCT was influenced by the GLs and CPs. A slight agreement (kappa <0.2) and low accuracy (area under the curve <0.7) were found between methods. CONCLUSIONS The determination of thin and thick GPs is related to the gingival landmarks and CPs. Further studies are required for a well-defined treatment protocol considering different gingival landmarks in tissue and bone zones. An ST-CBCT may be useful for this purpose.
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Affiliation(s)
| | | | - José Rodrigo de Moraes
- Department of Statistics, Federal Fluminense University, Statistics and Mathematics Institute, Niterói, Brazil
| | - Eliane Porto Barboza
- Department of Dental Clinic, Federal Fluminense University School of Dentistry, Niterói, Brazil
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19
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Guided Biopsy of a Radiopaque Lesion Simultaneous with Dental Implants’ Placement: A Multidisciplinary Approach. SURGERIES 2022. [DOI: 10.3390/surgeries3040032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Background: New technologies and techniques allow us to offer better solutions for patients’ needs. Specifically, guided surgery is usually flapless, and the resulting prosthetic rehabilitation often includes immediate loading. Thus, bleeding risk is controlled, and more comfortable prosthetic procedures are performed. Guided surgery decreases surgical risks and is less invasive. The aim of this article is to present a case of guided osteotomy for bone biopsy and implant placement. Methods: CBCT was performed for the patient’s bone examination, an optical scanner was used for intra-oral images, and surgical certified software was applied for the osteotomy planning and the surgeon’s guide realization. Case report: The patient’s question is about left maxilla prosthetic rehabilitation. During the oral cavity and X-ray examination, a radiopacity with a feathered edge was found; in order to detect the finding, a CBCT was performed, and the surgery was planned. A bone biopsy was performed simultaneously with the implant’s placement through a drill guide. The specimen sent for histological exam showed osteosclerosis. Conclusions: It is the opinion of the authors that by involving and combining close collaboration and communication, several professional specializations (clinicians and radiologists) can improve the treatments for better patient care.
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20
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Comparison of CBCT Prescriptions among Different Campuses of East Carolina University School of Dental Medicine. Int J Dent 2022; 2022:2754174. [PMID: 36148045 PMCID: PMC9489375 DOI: 10.1155/2022/2754174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 09/01/2022] [Indexed: 11/17/2022] Open
Abstract
Objectives East Carolina University School of Dental Medicine (ECU SoDM) has established a unique education model that delivers the dental curriculum through student rotations at community service learning centers (CSLCs) in underserved areas across North Carolina in their senior year. The objective of the study is to analyze the patient composition and CBCT prescription patterns at the main campus (Ross Hall) and eight CSLCs, to determine if students have comparable training at various sites. Methods CBCTs taken at ECU SoDM in 2017–2021 were evaluated. One-way analysis of variance and the Wilcoxon Rank Sum Test were used to determine any differences in demographics, Medicaid coverage, and scan indications at various sites. Results A total of 1444 patients were included, with an age range of 4–90 years old; male 685, female 758; 1130 non-Hispanic/Latino, 71 Hispanic/Latino. For races, Caucasian 1106, African-American 156, American Indian/Alaskan Native 32, Asian 18, mixed 13, other 73. For Medicaid, there are 75 with and 1369 without coverage. Ross Hall has the largest amount of patients at 537, followed by Davidson 218, Brunswick 189, and Lillington 169, with Elizabeth City being the least with 45 patients. The top four reasons for taking CBCTs were implants, endodontics, oral pathology, and 3rd molar assessment. There was no significant difference in the indications for CBCTs or Medicaid coverage, among various sites. Conclusions The demographics, Medicaid coverage and CBCT prescription patterns were comparable among various sites. There was a site-related difference in the amount of scans taken, warranting the necessity to monitor CSLC rotation selections to ensure a consistent learning experience.
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Hou X, Xu X, Zhao M, Kong J, Wang M, Lee ES, Jia Q, Jiang HB. An overview of three-dimensional imaging devices in dentistry. J ESTHET RESTOR DENT 2022; 34:1179-1196. [PMID: 35968802 DOI: 10.1111/jerd.12955] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 07/27/2022] [Accepted: 07/28/2022] [Indexed: 12/27/2022]
Abstract
OBJECTIVE To review four types of three-dimensional imaging devices: intraoral scanners, extraoral scanners, cone-beam computed tomography (CBCT), and facial scanners, in terms of their development, technologies, advantages, disadvantages, accuracy, influencing factors, and applications in dentistry. METHODS PubMed (National Library of Medicine) and Google Scholar databases were searched. Additionally, the scanner manufacturers' websites were accessed to obtain relevant data. Four authors independently selected the articles, books, and websites. To exclude duplicates and scrutinize the data, they were uploaded to Mendeley Data. In total, 135 articles, two books, and 17 websites were included. RESULTS Research and clinical practice have shown that oral and facial scanners and CBCT can be used widely in various areas of dentistry with high accuracy. CONCLUSION Although further advancement of these devices is desirable, there is no doubt that digital technology represents the future of dentistry. Furthermore, the combined use of different devices may bring dentistry into a new era. These four devices will play a significant role in clinical utility with high accuracy. The combined use of these devices should be explored further. CLINICAL SIGNIFICANCE The four devices will play a significant role in clinical use with high accuracy. The combined use of these devices should be explored further.
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Affiliation(s)
- Xingyu Hou
- The Conversationalist Club, School of Stomatology, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Xiaotong Xu
- The Conversationalist Club, School of Stomatology, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Menghua Zhao
- The Conversationalist Club, School of Stomatology, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Jiawen Kong
- The Conversationalist Club, School of Stomatology, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Mingchang Wang
- The Conversationalist Club, School of Stomatology, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Eui-Seok Lee
- Department of Oral and Maxillofacial Surgery, Graduate School of Clinical Dentistry, Korea University, Seoul, Republic of Korea
| | - Qi Jia
- The Conversationalist Club, School of Stomatology, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Heng Bo Jiang
- The Conversationalist Club, School of Stomatology, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
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Nakamura J, Kamao T, Mitani A, Mizuki N, Shiraishi A. Analysis of Lacrimal Duct Morphology from Cone-Beam Computed Tomography Dacryocystography in a Japanese Population. Clin Ophthalmol 2022; 16:2057-2067. [PMID: 35770249 PMCID: PMC9235895 DOI: 10.2147/opth.s370800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 06/14/2022] [Indexed: 12/03/2022] Open
Abstract
Purpose The dacryoendoscope is a practical instrument for the examination and the treatment of lacrimal duct obstruction. Nevertheless, as it is a rigid fiberscope, manipulation of the endoscope is somewhat affected by the patient’s lacrimal duct alignment and the skeletal structure of the face. The morphology and inclination of the lacrimal duct vary among individuals and ethnic groups. We aimed to evaluate the alignment of the lacrimal duct from the perspective of endoscopic maneuverability in a Japanese population. Methods This retrospective study analyzed the cone-beam computed tomography dacryocystography (CBCT-DCG) images of 102 patients diagnosed with unilateral primary acquired nasolacrimal duct obstruction (PANDO) at Ehime University Hospital from December 2015 to May 2021. The following parameters of the lacrimal duct on the contralateral side of unilateral PANDO were investigated: (1) angle formed by the superior orbital rim–internal common punctum–nasolacrimal duct opening, (2) angle formed by the lacrimal sac and the nasolacrimal duct, (3) length of the lacrimal sac, and (4) length of the nasolacrimal duct. Results Measurements of the above parameters were (1) 10.2° ± 7.8° (range, −11° to +27°), (2) −6.3° ± 14.1° (range, −43° to +40°), (3) 8.9 ± 2.3 mm (range, 4.3–17.1), and (4) 13.2 ± 2.7 mm (range, 5.7–20.7), respectively. The Shapiro–Wilk test demonstrated that the values of all parameters, except (3), followed a normal distribution (p = 0.55, 0.30, 0.0002, and 0.39, respectively). No significant difference was found between the female and male groups (p > 0.05). Conclusion This study reported anthropometric analysis data of the morphology of the lacrimal ducts using CBCT-DCG in a Japanese population. In our cohort, the line from the superior orbital rim through the internal common punctum to the nasolacrimal duct opening inclined anteriorly in 92% of the patients.
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Affiliation(s)
- Jutaro Nakamura
- Department of Ophthalmology, Ehime University Graduate School of Medicine, Toon, Ehime, 791-0295, Japan
- Department of Ophthalmology and Visual Science, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, 236-0004, Japan
- Correspondence: Jutaro Nakamura, Department of Ophthalmology, Ehime University Graduate School of Medicine, Shitsukawa, Toon, Ehime, 791-0295, Japan, Tel +81-89-960-5361, Fax +81-89-960-5364, Email
| | - Tomoyuki Kamao
- Department of Ophthalmology, Ehime University Graduate School of Medicine, Toon, Ehime, 791-0295, Japan
| | - Arisa Mitani
- Department of Ophthalmology, Ehime University Graduate School of Medicine, Toon, Ehime, 791-0295, Japan
| | - Nobuhisa Mizuki
- Department of Ophthalmology and Visual Science, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, 236-0004, Japan
| | - Atsushi Shiraishi
- Department of Ophthalmology, Ehime University Graduate School of Medicine, Toon, Ehime, 791-0295, Japan
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Zhu F, Hou D, Zhou C, Chen Z, Cao Y, Ji L, Zou J, Xu Y. Precise extraction of impacted supernumerary tooth in the maxillary anterior region with a digital guide plate: A case report. Medicine (Baltimore) 2022; 101:e29275. [PMID: 35608429 PMCID: PMC9276383 DOI: 10.1097/md.0000000000029275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2022] [Accepted: 03/23/2022] [Indexed: 01/04/2023] Open
Abstract
RATIONALE Removal of impacted supernumerary teeth requires precision and accuracy to prevent iatrogenic injury to important anatomical structures during dental surgery and to improve postoperative healing. PATIENT CONCERNS A 12-year-old girl visited our department for the assessment and management of her deviated front teeth. DIAGNOSIS Impacted supernumerary tooth extraction in the maxillary anterior region. INTERVENTIONS The digital guide plate was fabricated after the integration of cone beam computed tomography data with that obtained from scanning the patient's dental model. Impacted supernumerary tooth extraction was performed. OUTCOMES The use of the digital guide plate and planting instruments made the removal of the impacted supernumerary tooth less invasive, faster, and more accurate, whereas the wound was smaller, and the patient experience more comfortable. LESSONS Combining the digital guide plate with planting instruments offers a useful aid for the removal of impacted supernumerary teeth among the maxillary anterior region and is, thus, worth promoting.
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Affiliation(s)
- Fangyong Zhu
- Department of Stomatology, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Deqiang Hou
- Department of Stomatology, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Chen Zhou
- Department of Stomatology, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Zhifei Chen
- Department of Stomatology, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Yannan Cao
- Department of Stomatology, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Lian Ji
- Department of Stomatology, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Jianming Zou
- Department of Stomatology, Affiliated Hospital of Jiangnan University, Wuxi, China
| | - Yanhua Xu
- Department of Orthodontics, Affiliated Stomatology Hospital of Kunming Medical University, Kunming, China
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Aldhuwayhi S, Bhardwaj A, Deeban YAM, Bhardwaj SS, Alammari RB, Alzunaydi A. A Narrative Review on Current Diagnostic Imaging Tools for Dentomaxillofacial Abnormalities in Children. CHILDREN 2022; 9:children9050621. [PMID: 35626798 PMCID: PMC9139436 DOI: 10.3390/children9050621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 04/12/2022] [Accepted: 04/13/2022] [Indexed: 11/16/2022]
Abstract
The current review narrates the findings and discusses the available diagnostic tools for detecting structural abnormalities. The review discusses several diagnostic tools, such as magnetic resonance imaging, cone beam computed tomography, multi detector row CT and positron emission tomography. The vital findings and comparative analysis of different diagnostic tools are presented in this review. The present review also discusses the advent of newer technologies, such as the HyperionX9 scanner with less field of view and 18F-FDG PET/CT (positron emission tomography with 2-deoxy-2-[fluorine-18] fluoro-D-glucose, integrated with computed tomography), which can give more efficient imaging of dentomaxillofacial structures. The discussion of effective comparative points enables this review to reveal the available diagnostic tools that can be used in the detection of dentomaxillofacial abnormalities in the pediatric population. The advantages and disadvantages of each tool are discussed, and the findings of past publications are also presented. Overall, this review discusses the technical details and provides a comparative analysis of updated diagnostic techniques for dentomaxillofacial diagnosis.
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Affiliation(s)
- Sami Aldhuwayhi
- Department of Prosthodontics, College of Dentistry, Majmaah University, Al Majmaah 11952, Saudi Arabia; (S.A.); (Y.A.M.D.); (R.B.A.)
| | - Atul Bhardwaj
- Department of Prosthodontics, College of Dentistry, Majmaah University, Al Majmaah 11952, Saudi Arabia; (S.A.); (Y.A.M.D.); (R.B.A.)
- Correspondence:
| | - Yahya Ahmed M. Deeban
- Department of Prosthodontics, College of Dentistry, Majmaah University, Al Majmaah 11952, Saudi Arabia; (S.A.); (Y.A.M.D.); (R.B.A.)
| | - Smita Singh Bhardwaj
- Pediatric Dentistry, Department of Preventive Dental Sciences, College of Dentistry, Majmaah University, Al Majmaah 11952, Saudi Arabia;
| | - Rawan Bakr Alammari
- Department of Prosthodontics, College of Dentistry, Majmaah University, Al Majmaah 11952, Saudi Arabia; (S.A.); (Y.A.M.D.); (R.B.A.)
| | - Ayoub Alzunaydi
- General Dentist, Ministry of Health, Al Artawiyah General Hospital, Al Artawiyah 15719, Saudi Arabia;
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High-speed flat-detector computed tomography for temporal bone imaging and postoperative control of cochlear implants. Neuroradiology 2022; 64:1437-1445. [PMID: 35410396 PMCID: PMC9177478 DOI: 10.1007/s00234-022-02940-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 04/03/2022] [Indexed: 10/30/2022]
Abstract
PURPOSE Flat-detector computed tomography (FD-CT) is the standard for cochlear implant (CI) imaging. FD-CT systems differ in technical characteristics. Our aim was an evaluation of two different FD-CT generations with different protocols and hardware regarding image quality, radiation dose, and scan time. METHODS Two temporal bone specimens (- / + CI = TB0/TB1) were scanned using three different scanners: two FD-CT systems with different scanning protocols (standard FD-CT: 20 s 70 kV, 20 s 109 kV; high-speed FD-CT [HS-FD-CT]: 7 s 109 kV, 9 s 109 kV, 14 s 72 kV) and MS-CT (5 s 120 kV). Acquired datasets were evaluated in consensus reading regarding qualitative and quantitative parameters: addressing CI- and cochlea-specific parameters, cochlea delineation, lamina spiralis ossea visibility, distinction of single CI electrodes, determination of intracochlear implant position, stapes delineation, and mastoidal septation were assessed. Addressing protocol-specific parameters, radiation dose (dose-length-product/DLP), and scan time were assessed. RESULTS Two HS-FD-CT protocols (14 s/9 s) provide higher or equivalent diagnostic information regarding CI- and cochlea-specific parameters compared to both standard FD-CT protocols. The fastest HS-FD-CT protocol (7 s)-providing inferior diagnostic information compared to all other FD-CT protocols-still exceeds MS-CT. The highest DLP was recorded for the 14 s HS-FD-CT protocol (TB1 = 956 mGycm); the lowest DLPs were recorded for the 7 s HS-FD-CT protocol (TB0 = 188 mGycm) and for MS-CT (TB0 = 138 mGycm), respectively. HS-FD-CT allows a significant reduction of scan time compared to standard FD-CT. CONCLUSION High-speed FD-CT improves visualization of temporal bone anatomy and postoperative assessment of CIs by combining excellent image quality, fast scan time, and reasonable radiation exposure.
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Wang J, Cha S, Zhao Q, Bai D. Methods to assess tooth gingival thickness and diagnose gingival phenotypes: A systematic review. J ESTHET RESTOR DENT 2022; 34:620-632. [PMID: 35297167 DOI: 10.1111/jerd.12900] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 02/20/2022] [Accepted: 02/21/2022] [Indexed: 02/05/2023]
Abstract
OBJECTIVE Measurement of the periodontal soft tissue dimension is crucial for clinical decision-making and aesthetic prognosis. However, the effectiveness of different measuring methods remains unclear. This systematic review aimed to explore the diagnostic accuracy of two non-invasive methods (namely CBCT and ultrasound) for gingival thickness measurement at different tooth positions. MATERIALS AND METHODS A systematic search was performed using PubMed (including Medline), PubMed Central, OVID, Cochrane Library, LILACS and OpenGrey. Studies focusing on comparisons between CBCT, ultrasound and direct transgingival probing were included. The means, SDs and correlation coefficients with 95% confidence intervals were extracted and analyzed using Review Manager and R software. RESULTS Twelve studies were selected. No significant difference was found between CBCT measurement and transgingival probing in the anterior and posterior dentition, and a moderate correlation was observed between these two methods (r = 0.41). A weak correlation was found between ultrasound measurement and transgingival probing (r = 0.32), and a slight but statistically significant difference was found when comparing ultrasonic devices and transgingival probing in the posterior area. CONCLUSION CBCT can be considered a relatively reliable method for gingival thickness measurement in both the anterior and posterior areas compared with direct probing. Ultrasonic devices provide limited accuracy in the posterior area but are relatively comparable with direct clinical assessments in the anterior area. CLINICAL SIGNIFICANCE Measurement location may affect the diagnostic accuracy and repeatability of gingival thickness measurements. Appropriate method selection in different clinical scenarios is crucial to aesthetic outcome prediction and decision-making.
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Affiliation(s)
- Jiangyue Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Sa Cha
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qing Zhao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ding Bai
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Endodontic procedural errors: Analysis of images from cone beam computed tomography. FORENSIC IMAGING 2022. [DOI: 10.1016/j.fri.2022.200493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Steffen T, Winklhofer S, Starz F, Wiedemeier D, Ahmadli U, Stadlinger B. Three-dimensional perception of cinematic rendering versus conventional volume rendering using CT and CBCT data of the facial skeleton. Ann Anat 2022; 241:151905. [PMID: 35150863 DOI: 10.1016/j.aanat.2022.151905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 12/17/2021] [Accepted: 01/21/2022] [Indexed: 10/19/2022]
Abstract
The aim of this exploratory study is to analyse whether three-dimensional cinematic rendering image reconstructions offer advantages over conventional volume rendering in the visualisation of cone beam computed tomography (CBCT) and computed tomography (CT) images of the facial skeleton. This is of interest, as some information gets lost during the rendering process. This especially applies to structures in the background of the image and some surface information which can be lost. The commonly applied two-dimensional representation of CBCT or CT images in three different axes requires experience for interpretation. Cinematic rendering is a new three-dimensional post processing reconstruction technique, creating photo realistic visualisations, thus possibly enabling an easier interpretation of the images. In this study, ten investigators assessed ten separate patient cases of the orofacial skeleton. For each case, a conventional volume rendering image reconstruction and a cinematic rendering reconstruction of the same area was created. A specially designed questionnaire assessed both objective and subjective criteria of image perception. Objective criteria were assessed by predefined questions on the visual perception of anatomical image characteristics, showing the two reconstruction types of each case randomly to the investigators in two sessions. Subjective criteria were assessed via a visual analogue scale, showing both reconstructions simultaneously in a third session. The results show that cinematic rendering offers advantages especially in the evaluation of depth perception and three-dimensionality. Volume rendering shows advantages in surface sharpness. Cinematic Rendering was subjectively rated higher for almost all reconstructions. The cinematic rendering process however may cause loss of information and blurring of surfaces compared to volume rendering. With respect to the subjective impression, cinematic rendering scored better than volume rendering. The visualisation is perceived as being very close to reality.
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Affiliation(s)
- Tobias Steffen
- Clinic of Cranio-Maxillofacial and Oral Surgery, University of Zurich, Switzerland
| | - Sebastian Winklhofer
- Department of Neuroradiology, Clinical Neuroscience Center, University Hospital Zurich, University of Zurich, Switzerland
| | - Felicitas Starz
- Clinic of Cranio-Maxillofacial and Oral Surgery, University of Zurich, Switzerland
| | - Daniel Wiedemeier
- Statistical Services, University of Zurich, Center of Dental Medicine, University of Zurich, Switzerland
| | - Uzeyir Ahmadli
- Department of Neuroradiology, Clinical Neuroscience Center, University Hospital Zurich, University of Zurich, Switzerland; University Institute of Diagnostic and Interventional Neuroradiology, University Hospital Bern, Inselspital, University of Bern, Switzerland
| | - Bernd Stadlinger
- Clinic of Cranio-Maxillofacial and Oral Surgery, University of Zurich, Switzerland.
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Hinchy NV, Anderson NK, Mahdian M. Metal artifact reduction using common dental materials. Dentomaxillofac Radiol 2022; 51:20210302. [PMID: 34406821 PMCID: PMC8802694 DOI: 10.1259/dmfr.20210302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
OBJECTIVES To determine the effect of different dental lab materials on cone beam computed tomography (CBCT) metal artifact at different resolutions. METHODS A total of seven common dental lab materials were molded to a dental sextant of four extracted, restored teeth. In addition to base alone (control), each material was scanned using the Carestream 9600 CBCT unit at three resolutions - 0.3 mm, 0.15 mm, and 0.075 mm - at manufacturer established exposure parameters. A single, representative axial view of each trial was evaluated for metal artifact both quantitatively by histogram analysis and qualitatively by profile plot analysis in ImageJ. RESULTS No statistically significant differences between the control and the dental materials were found; however, post-hoc tests showed significance between Blu-mousse® and polyvinyl siloxane with dental materials and control, predominantly in lower resolutions. CONCLUSIONS The current study provides initial evidence on the influence of dental materials have on CBCT metal artifact as described by beam hardening, photon starvation, scatter, and noise, especially at lower resolutions. Blu-Mousse® and polyvinyl siloxane reduced the perceived beam hardening and photon starvation artifact the greatest, relative to other materials, at all three resolutions and lower resolutions, respectively.
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Affiliation(s)
- Nicole V Hinchy
- Division of Diagnostic Imaging, Department of Prosthodontics and Digital Technology, Stony Brook University School of Dental Medicine, Stony Brook, NY, USA
| | - Nina K Anderson
- Department of Orthodontics and Dentofacial Orthopedics, Stony Brook University School of Dental Medicine, Stony Brook, NY, USA
| | - Mina Mahdian
- Division of Diagnostic Imaging, Department of Prosthodontics and Digital Technology, Stony Brook University School of Dental Medicine, Stony Brook, NY, USA
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Lv HX, Rong R, Sa Y. Radiopaque fiducial markers as an aid to fabrication of an implant surgical guide for a patient with orthodontic brackets: A dental technique. J Prosthet Dent 2021:S0022-3913(21)00455-8. [PMID: 34556334 DOI: 10.1016/j.prosdent.2021.07.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 07/28/2021] [Accepted: 07/28/2021] [Indexed: 10/20/2022]
Abstract
Designing implant surgical guides for patients undergoing orthodontics merely by merging data imaging and communications in medicine (DICOM) files generated from cone beam computed tomography (CBCT) images and standard tessellation language (STL) files generated from surface scanners is challenging because of the inaccuracy caused by metal artifacts. The present technique describes a straightforward and effective method of fabricating a surgical guide with the aid of fiducial markers made from cotton swabs and flowable resin. The implant surgical guide is designed by using a software program after the superimposition of digital scan and CBCT data. This chairside technique provides an accurate, convenient, and cost-effective option for the clinician.
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Affiliation(s)
- Hao-Xin Lv
- Director, Department of Oral Implantology, Suzhou doctor dental clinic Co. LTD, Suzhou, PR China
| | - Rong Rong
- Graduate student, Department of Prosthodontics, The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, PR China
| | - Yue Sa
- Associate professor, Department of Prosthodontics, The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, PR China.
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Slaidina A, Nikitina E, Abeltins A, Soboleva U, Lejnieks A. Gray values of the cervical vertebrae detected by cone beam computed tomography for the identification of osteoporosis and osteopenia in postmenopausal women. Oral Surg Oral Med Oral Pathol Oral Radiol 2021; 133:100-109. [PMID: 34535433 DOI: 10.1016/j.oooo.2021.06.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 05/18/2021] [Accepted: 06/15/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVES This study aimed to determine whether the gray values (GVs) of the second and third cervical vertebrae in cone beam computed tomography (CBCT) are affected by general bone mineral density (BMD) in postmenopausal women and to evaluate whether CBCT can be used for predicting the risk of osteoporosis. STUDY DESIGN The present cross-sectional study included 127 edentulous postmenopausal women (average age, 70.4 ± 8.9 years) who underwent CBCT examinations. BMD measurements of the lumbar spine and both femoral necks were performed by dual-energy x-ray absorptiometry. The CBCT images were analyzed with OnDemand3D Dental software. GVs of the axial and sagittal sections of the cervical second and third vertebral bodies were obtained. RESULTS The GVs of the second and third cervical vertebrae decreased significantly with decreasing BMD. The axial GV of the second cervical vertebra showed the highest sensitivity (80.6%), highest negative predictive value (89.0%), lowest negative likelihood ratio (0.39), and highest area under the curve value (0.68) to predict osteoporosis. CONCLUSIONS Women with reduced BMD have lower GVs for the second and third cervical vertebrae. Changes in the GV of the second vertebra can potentially be used to determine the risk of osteoporosis in postmenopausal women.
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Affiliation(s)
- Anda Slaidina
- Leading Researcher, Department of Prosthodontics, Riga Stradins University, Riga Stradins University Institute of Stomatology, Riga, Latvia.
| | - Evija Nikitina
- Assistant, Department of Prosthodontics, Riga Stradins University, Riga Stradins University Institute of Stomatology, Riga, Latvia
| | - Andris Abeltins
- Associate Professor, Department of Orthodontics, Riga Stradins University, Riga Stradins University Institute of Stomatology, Riga, Latvia
| | - Una Soboleva
- Professor, Department of Prosthodontics, Riga Stradins University, Riga Stradins University Institute of Stomatology, Riga, Latvia
| | - Aivars Lejnieks
- Professor, Department of Internal Diseases, Riga Stradins University, Riga East Clinical University Hospital, Riga, Latvia
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Abstract
Dental radiography can be used to detect alveolar bone levels around periodontal and peri-implant structures. Periodontal radiographic images can assess alveolar bone height, periodontal ligament, furcation involvement, and evidence of bone destruction. Peri-implant radiographic images can assess the alveolar bone height in relation to the implant structure. As an adjunct to patient care, radiography can aid in the diagnosis of non-health.
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Cone-Beam Computed Tomography: A User-Friendly, Practical Roadmap to the Planning and Execution of Every Rhinoplasty-A 5-Year Review. Plast Reconstr Surg 2021; 147:749e-762e. [PMID: 33835107 DOI: 10.1097/prs.0000000000007900] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Cone-beam computed tomography has recently rapidly developed worldwide as a versatile and convenient alternative to traditional computed tomography for imaging of the maxillofacial region. However, most surgeons performing rhinoplasty are surprisingly unfamiliar with it, in both the plastic surgery and ear, nose, and throat communities. METHODS The broad clinical experience of a single center over the past 5 years is reviewed. The many applications of cone-beam computed tomography to primary and secondary rhinoplasty are analyzed regarding septum, turbinates, nasal bones, skin thickness, and other issues. The importance of a paradigm shift from a two-dimensional to a three-dimensional approach in image reconstruction is demonstrated, together with the value of surface contour enhancement. RESULTS Cone-beam computed tomography has a multitude of practical applications highly relevant to rhinoplasty. The surface image will strengthen aesthetic analysis, and the detailed preview of bony and functional anatomy will facilitate surgical planning. Cone-beam computed tomography serves as a roadmap to plan and execute rhinoplasties more predictably and efficiently. The availability of spatial views and accurate detail, together with the possibility of easy, accurate measuring, offers a plenitude of potential applications. CONCLUSIONS Cone-beam computed tomography is a user-friendly, quick technique with abundant advantages in planning any rhinoplasty. It causes the patient no inconvenience and has very few, if any, drawbacks, with these being limited to radiation exposure and limited cost.
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Husseini B, Khoury G, Riachi F, Ghosn N, Khoury N, Jerbaka F, Bouserhal J, Younes R. Three-dimensional radiographic assessment of the mandibular interforaminal donor site in different vertical facial growth types. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2021; 123:9-15. [PMID: 33609788 DOI: 10.1016/j.jormas.2021.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/17/2021] [Accepted: 02/11/2021] [Indexed: 11/28/2022]
Abstract
PURPOSE To assess volumetrically, the impact of vertical facial growth types (VFGT) on the mandibular interforaminal region as a potential bone donor site. MATERIAL AND METHODS 60 cone beam computed tomography (CBCT) scans of adult individuals were classified in three groups according to their SN-GoGn angle: hypodivergent group (hG) (N=20), normodivergent group (NG) (N=19) and hyperdivergent group (HG) (N=21). Total harvestable bone volume (TBV), cortico-cancellous bone volume (CBV-cBV), and cortical bone surface (CBS) were evaluated. ANOVA test followed by Tukey post hoc tests were used to compare the mean continuous outcomes according to their VFGT. RESULTS The whole sample showed a mean TBV of 1376.32±541.01mm3, CBV of 468.52±121.54mm3 and cBV of 908.73±474.71mm3. The mean CBS amounted to 782.58±146.80mm2. The comparison between the groups stated a significantly different mean TBV and cBV (-p-value<0.001). The mean CBS was significantly different (-p-value=0.015): the smallest for the NG, but not significantly different (-p-value<0.001): the highest for the HG, intermediate for the NG and the smallest for the hG. CONCLUSION Hypodivergent individuals have the thickest cancellous bone suitable for an onlay bone graft, while hyperdivergent individuals have the thinnest bone ideal for a 3D grafting approach.
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Affiliation(s)
- B Husseini
- Department of Oral Surgery, Faculty of Dental Medicine, Saint-Joseph University of Beirut, Beirut, Lebanon; Cranio-Facial Research Laboratory, Faculty of Dental Medicine, Saint-Joseph University of Beirut, Beirut, Lebanon..
| | - G Khoury
- Department of Advanced Surgical Implantology, Service of Odontology, U.F.R. of Odontology, Rothschild Hospital, AP-HP, University Denis Diderot, Paris, France.
| | - F Riachi
- Department of Oral Surgery, Faculty of Dental Medicine, Saint-Joseph University of Beirut, Beirut, Lebanon
| | - N Ghosn
- Cranio-Facial Research Laboratory, Faculty of Dental Medicine, Saint-Joseph University of Beirut, Beirut, Lebanon..
| | - N Khoury
- Department of Oral Surgery, Faculty of Dental Medicine, Saint-Joseph University of Beirut, Beirut, Lebanon.
| | | | - J Bouserhal
- Cranio-Facial Research Laboratory, Faculty of Dental Medicine, Saint-Joseph University of Beirut, Beirut, Lebanon.; Department of Orthodontics, Faculty of Dental Medicine, Saint-Joseph University of Beirut, Beirut, Lebanon; Department of orthodontics, Henry M. Goldman School of Dental Medicine, Boston, USA
| | - R Younes
- Department of Oral Surgery, Faculty of Dental Medicine, Saint-Joseph University of Beirut, Beirut, Lebanon; Cranio-Facial Research Laboratory, Faculty of Dental Medicine, Saint-Joseph University of Beirut, Beirut, Lebanon..
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Sun M, Liu X, Xia T, Meng H. Non-invasive evaluation of labial gingival and alveolar crest thickness in the maxillary anterior teeth region by 15-MHz B-mode ultrasonography. BMC Oral Health 2021; 21:10. [PMID: 33407377 PMCID: PMC7789343 DOI: 10.1186/s12903-020-01377-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Accepted: 12/21/2020] [Indexed: 11/16/2022] Open
Abstract
Background Knowledge of gingival thickness (GT) and alveolar crest thickness (ACT) is essential when performing surgical and non-surgical procedures in the maxillary anterior teeth region. This study aimed at evaluating the GT and ACT in the maxillary anterior teeth region using 15-MHz B-mode Ultrasonic (US). Methods A total of 300 teeth from 50 healthy participants, comprising 25 women and 25 men, aged between 18 and 35 years were analyzed. We measured labial periodontal tissue structures of maxillary anterior teeth, including GT and ACT, at 3 mm apical to the gingival margin (GT3) and the crestal level, respectively. The GT and ACT measurements were correlated. Results The mean labial GT3 of the maxillary central incisors, lateral incisors, and canines were 1.24 ± 0.03 mm, 1.21 ± 0.03 mm and 1.11 ± 0.03 mm, respectively. Canine GT3 was significantly thin than those in the central and lateral incisors (P < 0.05). With regards to labial ACT, we recorded 0.79 ± 0.03 mm, 0.76 ± 0.02 mm and 0.73 ± 0.02 mm for maxillary central incisors, lateral incisors and canines, respectively. There were no significant differences in ACT of maxillary anterior teeth (P > 0.05). GT3 of men was greater than that of women (P < 0.05). In addition, GT and ACT were positively correlated (r = 0.32, P < 0.01). Conclusion 15-MHz B-mode US is an effective tool for measuring labial GT and ACT of anterior teeth. There are sex-associated differences in GT3 and the correlation between the GT3 and ACT of anterior teeth is moderately positive.
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Affiliation(s)
- Meng Sun
- Department of Ultrasound Diagnostics and Treatment, Shenzhen Second People's Hospital, First Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong, China
| | - Xiaofeng Liu
- Department of Stomatology, Shenzhen University General Hospital and Shenzhen University Clinical Medical Academy, Liuxian Street, Nanshan district, Shenzhen, 518055, Guangdong, China
| | - Ting Xia
- Department of Stomatology, Shenzhen University General Hospital and Shenzhen University Clinical Medical Academy, Liuxian Street, Nanshan district, Shenzhen, 518055, Guangdong, China
| | - He Meng
- Department of Stomatology, Shenzhen University General Hospital and Shenzhen University Clinical Medical Academy, Liuxian Street, Nanshan district, Shenzhen, 518055, Guangdong, China.
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Miranda-Viana M, Freitas DQ, Gomes AF, Prado FB, Nejaim Y. Classification and Morphological Analysis of the Hard Palate in Cone-Beam Computed Tomography Scans: A Retrospective Study. J Oral Maxillofac Surg 2020; 79:695.e1-695.e13. [PMID: 33358709 DOI: 10.1016/j.joms.2020.11.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 11/19/2020] [Accepted: 11/20/2020] [Indexed: 11/18/2022]
Abstract
PURPOSE As the hard palate is a central structure of the skull and is involved in orthodontic and surgical procedures, it would be of interest to study the morphological aspects of this bone and its possible variations as per different patterns of skeletal development. Thus, this study aimed to develop a classification for the different morphological characteristics of the hard palate and to evaluate the relationship between these characteristics and the different skeletal patterns, using cone-beam computed tomography (CBCT). MATERIALS AND METHODS This retrospective and cross-sectional study used CBCT scans of patients seen from January 2014 to December 2016. Carestream Dental 3D Imaging software was applied to classify each patient according to vertical and sagittal skeletal patterns, and to evaluate the 3 morphological characteristics of the hard palate: depth (flat, regular, or deep), inclination (superior, parallel, or inferior), and presence of a bony projection (S-shaped). χ2 and Fisher's exact tests evaluated the relationship between the hard palate characteristics and the different skeletal patterns. RESULTS A total of 298 CBCT scans (144 males and 154 females) were evaluated. The depth of the hard palate was significantly related to both skeletal patterns in males (P < .05), with Class II and dolichocephalics presenting a greater amount of deep palates, while classes I and III and brachycephalics had a greater amount of regular palates. The inclination of the hard palate was significantly associated with the facial type in females (P < .05), with brachycephalics and mesocephalics presenting a greater amount of parallel palates, whereas dolichocephalics had a greater number of inferiorly inclined palates. Regarding the presence of the S-shape in the hard palate, there was a greater number of this projection in Class II males and brachycephalic females. CONCLUSIONS A morphological classification for the hard palate was developed. The morphology of the hard palate varied among the different skeletal patterns.
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Affiliation(s)
- Murilo Miranda-Viana
- Student, Department of Oral Diagnosis - Oral Radiology Area, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil.
| | - Deborah Queiroz Freitas
- Professor, Department of Oral Diagnosis - Oral Radiology Area, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil
| | - Amanda Farias Gomes
- Professor, Department of Oral Diagnosis - Oral Radiology Area, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil
| | - Felippe Bevilacqua Prado
- Professor, Department of Morphology - Anatomy Area, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil
| | - Yuri Nejaim
- Professor, Oral Radiology Area, Dental School, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
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Loureiro RM, Sumi DV, Tames HLVC, Ribeiro SPP, Soares CR, Gomes RLE, Daniel MM. Cross-Sectional Imaging of Third Molar-Related Abnormalities. AJNR Am J Neuroradiol 2020; 41:1966-1974. [PMID: 32912872 DOI: 10.3174/ajnr.a6747] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 06/19/2020] [Indexed: 01/21/2023]
Abstract
Third molars may be associated with a wide range of pathologic conditions, including mechanical, inflammatory, infectious, cystic, neoplastic, and iatrogenic. Diagnosis of third molar-related conditions can be challenging for radiologists who lack experience in dental imaging. Appropriate imaging evaluation can help practicing radiologists arrive at correct diagnoses, thus improving patient care. This review discusses the imaging findings of various conditions related to third molars, highlighting relevant anatomy and cross-sectional imaging techniques. In addition, key imaging findings of complications of third molar extraction are presented.
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Affiliation(s)
- R M Loureiro
- Department of Radiology, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
| | - D V Sumi
- Department of Radiology, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
| | - H L V C Tames
- Department of Radiology, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
| | - S P P Ribeiro
- Department of Radiology, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
| | - C R Soares
- Department of Radiology, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
| | - R L E Gomes
- Department of Radiology, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
| | - M M Daniel
- Department of Radiology, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
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Intraoperative cone beam computed tomography is as reliable as conventional computed tomography for identification of pedicle screw breach in thoracolumbar spine surgery. Eur Radiol 2020; 31:2349-2356. [PMID: 33006659 PMCID: PMC7979653 DOI: 10.1007/s00330-020-07315-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 08/04/2020] [Accepted: 09/17/2020] [Indexed: 12/01/2022]
Abstract
Objectives To test the hypothesis that intraoperative cone beam computed tomography (CBCT) using the Allura augmented reality surgical navigation (ARSN) system in a dedicated hybrid operating room (OR) matches computed tomography (CT) for identification of pedicle screw breach during spine surgery. Methods Twenty patients treated with spinal fixation surgery (260 screws) underwent intraoperative CBCT as well as conventional postoperative CT scans (median 12 months after surgery) to identify and grade the degree of pedicle screw breach on both scan types, according to the Gertzbein grading scale. Blinded assessments were performed by three independent spine surgeons and the CT served as the standard of reference. Screws graded as Gertzbein 0 or 1 were considered clinically accurate while grades 2 or 3 were considered inaccurate. Sensitivity, specificity, and negative predictive value were the primary metrics of diagnostic performance. Results For this patient group, the negative predictive value of an intraoperative CBCT to rule out pedicle screw breach was 99.6% (CI 97.75–99.99%). Among 10 screws graded as inaccurate on CT, 9 were graded as such on the CBCT, giving a sensitivity of 90.0% (CI 55.5–99.75%). Among the 250 screws graded as accurate on CT, 244 were graded as such on the CBCT, giving a specificity of 97.6% (CI 94.85–99.11%). Conclusions CBCT, performed intraoperatively with the Allura ARSN system, is comparable and non-inferior to a conventional postoperative CT scan for ruling out misplaced pedicle screws in spinal deformity cases, eliminating the need for a postoperative CT. Key Points • Intraoperative cone beam computed tomography (CT) using the Allura ARSN is comparable with conventional CT for ruling out pedicle screw breaches after spinal fixation surgery. • Intraoperative cone beam computed tomography can be used to assess need for revisions of pedicle screws making routine postoperative CT scans unnecessary. • Using cone beam computed tomography, the specificity was 97.6% and the sensitivity was 90% for detecting pedicle screw breaches and the negative predictive value for ruling out a pedicle screw breach was 99.6%.
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Gaêta-Araujo H, Alzoubi T, Vasconcelos KDF, Orhan K, Pauwels R, Casselman JW, Jacobs R. Cone beam computed tomography in dentomaxillofacial radiology: a two-decade overview. Dentomaxillofac Radiol 2020; 49:20200145. [PMID: 32501720 DOI: 10.1259/dmfr.20200145] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
OBJECTIVES The aim of this study was to evaluate and summarise features of currently and formerly available cone beam CT (CBCT) devices from 1996 to 2019. Additionally, a recommendation for standardised reporting of CBCT characteristics was provided. METHODS AND MATERIALS Information about the features of all available CBCT devices was obtained from the manufacturers' available data. Moreover, site visits to newly developed CBCT machines' manufacturers were performed in order to obtain relevant information. RESULTS A total of 279 CBCT models from 47 manufacturers located in 12 countries (Brazil, China, Denmark, Finland, France, Germany, Italy, Japan, Republic of Korea, Slovakia, Thailand, and USA) could be listed. Overall, wide variations in CBCT features and technical specifications were identified. CONCLUSIONS CBCT in dentomaxillofacial radiology is a generic term applicable to a broad range of CBCT machines and features. Experimental outcomes and literature statements regarding radiation doses, imaging performance and diagnostic applicability of dental CBCT cannot be simply transferred from one CBCT model to another considering a wide variation in technical characteristics and clinical diagnostic performance. The information tabulated in the present study will be later provided on the International Association of DentoMaxilloFacial Radiology website (www.iadmfr.one).
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Affiliation(s)
- Hugo Gaêta-Araujo
- OMFS IMPATH Research Group, Department of Imaging & Pathology, Faculty of Medicine, University of Leuven and Oral & Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium.,Department of Oral Diagnosis, Division of Oral Radiology, Piracicaba Dental School, University of Campinas, Piracicaba, Sao Paulo, Brazil
| | - Tamara Alzoubi
- OMFS IMPATH Research Group, Department of Imaging & Pathology, Faculty of Medicine, University of Leuven and Oral & Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Karla de Faria Vasconcelos
- OMFS IMPATH Research Group, Department of Imaging & Pathology, Faculty of Medicine, University of Leuven and Oral & Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Kaan Orhan
- OMFS IMPATH Research Group, Department of Imaging & Pathology, Faculty of Medicine, University of Leuven and Oral & Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium.,Department of DentoMaxillofacial Radiology, Ankara University, Faculty of Dentistry, Ankara, Turkey
| | - Ruben Pauwels
- Medical Physics & Quality Assessment Department of Imaging & Pathology, Faculty of Medicine, Catholic University of Leuven, Leuven, Belgium.,Aarhus Institute of Advanced Studies, Aarhus University, Aarhus, Denmark
| | | | - Reinhilde Jacobs
- OMFS IMPATH Research Group, Department of Imaging & Pathology, Faculty of Medicine, University of Leuven and Oral & Maxillofacial Surgery, University Hospitals Leuven, Leuven, Belgium.,Department of Dental Medicine, Karolinska Institutet, Huddinge, Sweden
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Nikoyan L, Patel R. Intraoral Scanner, Three-Dimensional Imaging, and Three-Dimensional Printing in the Dental Office. Dent Clin North Am 2020; 64:365-378. [PMID: 32111275 DOI: 10.1016/j.cden.2019.12.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The use of 3-dimensional (3D) cone-beam computed tomography (CBCT) imaging in the dental office has become a common imaging modality. The authors present an overview of multiple treatments that would benefit from the use of this technology. From preoperative, intraoperative, to postoperative patient management, 3D technology plays a vital role in the dental practice. With the incorporation of 3D CBCT, intraoral scanners, and 3D printing, a dental provider can accurately plan and execute the treatment with greater confidence. The contemporary dentist, however, has many options for incorporating the digital workflow based on the specific practice needs.
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Affiliation(s)
- Levon Nikoyan
- Department of Dentistry and Oral and Maxillofacial Surgery, Woodhull Hospital, 760 Broadway, Brooklyn, NY 11206, USA; Private Practice, Forward Oral Surgery, 248-62 Jericho Tpke, Floral Park, NY 11001, USA.
| | - Rinil Patel
- Department of Dentistry and Oral and Maxillofacial Surgery, Woodhull Hospital, 760 Broadway, Brooklyn, NY 11206, USA
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Machado JF, Pires PM, Santos TMPD, Neves ADA, Lopes RT, Visconti MAPG. Root canal segmentation in cone-beam computed tomography. BRAZILIAN JOURNAL OF ORAL SCIENCES 2019. [DOI: 10.20396/bjos.v18i0.8657328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Aim: The purpose of this study was to compare root canal volumes (RCVs) obtained by means of cone beam computed tomography (CBCT) to those obtained by micro-computed tomography (micro-CT) after applying different segmentation algorithms. Methods: Eighteen extracted human teeth with sound root canals were individually scanned in CBCT and micro-CT using specific acquisition parameters. Two different images segmentation strategies were applied to both acquisition methods (a visual and an automatic threshold). From each segmented tooth, the root canal volume was obtained. A paired t-test was used to identify differences between mean values resulted from the experimental groups and the gold standard. In addition, Pearson correlation coefficients and the agreement among the experimental groups with the gold standard were also calculated. The significance level adopted was 5%. Results: No statistical differences between the segmentation methods (visual and automatic) were observed for micro-CT acquired images. However, significant differences for the two segmentation methods tested were seen when CBCT acquired images were compared with the micro-CT automatic segmentation methods used. In general, an overestimation of the values in the visual method were observed while an underestimation was observed with the automatic segmentation algorithm. Conclusion: Cone beam computed tomography images acquired with parameters used in the present study resulted in low agreement with root canal volumes obtained with a micro-CT tomography gold standard method of RCV calculation.
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Aydin U, Gormez O, Yildirim D. Cone-beam computed tomography imaging of dentoalveolar and mandibular fractures. Oral Radiol 2019; 36:217-224. [PMID: 31102106 DOI: 10.1007/s11282-019-00390-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 05/06/2019] [Indexed: 11/28/2022]
Abstract
Three-dimensional imaging methods have an important role in the diagnosis of dentomaxillofacial fractures that can not be seen on the plain films. Cone-beam computed tomography (CBCT) is one of the three-dimensional imaging methods and has facilitated dental professionals' access to cross-sectional imaging. CBCT units allow different technical parameters and the data acquired by CBCT, can be reformatted. Osseous structures are correctly examined with this technique but the technique is not useful for the examination of soft tissues. Therefore, the purpose of its use should be based on the expected diagnostic gain. The aim of this review is to present the use of CBCT with different multi-planar reformatted sections and three-dimensional reconstructions of dentoalveolar and mandibular fractures.
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Affiliation(s)
- Ulkem Aydin
- Department of Dentomaxillofacial Radiology, Cyprus Health and Social Sciences University School of Dental Sciences, Morphou, North Cyprus
| | - Ozlem Gormez
- Department of Dentomaxillofacial Radiology, Suleyman Demirel University Faculty of Dentistry, Doğu Kampüsü, Çünür, 32000, Isparta, Turkey.
| | - Derya Yildirim
- Department of Dentomaxillofacial Radiology, Suleyman Demirel University Faculty of Dentistry, Doğu Kampüsü, Çünür, 32000, Isparta, Turkey
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Xie XY, Jia SM, Sun ZH, Zhang ZY. [Diagnostic accuracy of cone beam computed tomography with different resolution settings for external root resorption]. JOURNAL OF PEKING UNIVERSITY. HEALTH SCIENCES 2019; 51:75-79. [PMID: 30773548 DOI: 10.19723/j.issn.1671-167x.2019.01.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To evaluate the diagnostic accuracy of cone beam computed tomography (CBCT) with different resolution settings in detecting the simulated external root resorption defects. METHODS External root resorption defects were simulated in 51 human single rooted premolar teeth. Cavities simulating root resorption defects of 1 mm in diameter and 0.1 mm, 0.2 mm, and 0.3 mm in depth were drilled in the cervical, middle and apical thirds of lingual surfaces of the teeth. In addition to the 51 locations as controls, a total of 102 cavities were obtained in the present study. Specimens were placed in a human dry mandible and scanned by ProMax 3D and DCT PRO CBCT with different resolution settings, respectively. The three-dimensional CBCT images were evaluated by two experienced observers. The data were analyzed with receiver operating characteristics (ROC) analysis. ROC curves were generated and the area under ROC curve (Az) was employed to express the diagnostic accuracy. RESULTS The diagnostic accuracy (Az value) of ProMax 3D CBCT with high, normal and low resolution settings were 0.867, 0.703 and 0.665 (P < 0.05), respectively. Defects with depths of 0.2 mm and 0.3 mm were easier to be detected than those with depths of 0.1 mm (P < 0.05). The images obtained by high resolution mode scanning had obvious advantages in detecting smaller defects (depth 0.1 mm and 0.2 mm). The DCT PRO CBCT provided 4 resolution settings including normal quality + normal resolution, normal quality + high resolution, high quality + normal resolution and high quality + high resolution. The Az values for those 4 resolution settings were 0.527, 0.725, 0.743, and 0.794 (P < 0.05), respectively. Similar to ProMax 3D CBCT, the scanning mode with high resolution played a better role in detecting the defects with depth of 0.1 mm. Except for the scanning setting mode with normal quality + normal resolution, the other three modes could well be evaluated for the defects with depth of 0.2 mm and 0.3 mm. CONCLUSION It is concluded that the diagnostic ability for external root resorption of CBCT could be affected by resolution settings. Computer-aid imaging method can improve the CBCT diagnostic accuracy for external root resorption without increasing the radiation dose level during CBCT scanning.
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Affiliation(s)
- X Y Xie
- Department of Oral and Maxillofacial Radiology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - S M Jia
- Department of Engineering Physics, Tsinghua University & Key Laboratory of Particle and Radiation Imaging, Ministry of Education, Beijing 100084, China
| | - Z H Sun
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing 100081, China
| | - Z Y Zhang
- Department of Oral and Maxillofacial Radiology, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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Kortaberria G, Mutilba U, Gomez-Acedo E, Tellaeche A, Minguez R. Accuracy Evaluation of Dense Matching Techniques for Casting Part Dimensional Verification. SENSORS 2018; 18:s18093074. [PMID: 30217026 PMCID: PMC6164126 DOI: 10.3390/s18093074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 09/04/2018] [Accepted: 09/12/2018] [Indexed: 11/16/2022]
Abstract
Product optimization for casting and post-casting manufacturing processes is becoming compulsory to compete in the current global manufacturing scenario. Casting design, simulation and verification tools are becoming crucial for eliminating oversized dimensions without affecting the casting component functionality. Thus, material and production costs decrease to maintain the foundry process profitable on the large-scale component supplier market. New measurement methods, such as dense matching techniques, rely on surface texture of casting parts to enable the 3D dense reconstruction of surface points without the need of an active light source as usually applied with 3D scanning optical sensors. This paper presents the accuracy evaluation of dense matching based approaches for casting part verification. It compares the accuracy obtained by dense matching technique with already certified and validated optical measuring methods. This uncertainty evaluation exercise considers both artificial targets and key natural points to quantify the possibilities and scope of each approximation. Obtained results, for both lab and workshop conditions, show that this image data processing procedure is fit for purpose to fulfill the required measurement tolerances for casting part manufacturing processes.
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Affiliation(s)
- Gorka Kortaberria
- Department of Mechanical Engineering, IK4-Tekniker, 20600 Eibar, Spain.
| | - Unai Mutilba
- Department of Mechanical Engineering, IK4-Tekniker, 20600 Eibar, Spain.
| | - Eneko Gomez-Acedo
- Department of Mechanical Engineering, IK4-Tekniker, 20600 Eibar, Spain.
| | - Alberto Tellaeche
- Department of Smart and Autonomous Systems, IK4-Tekniker, 20600 Eibar, Spain.
| | - Rikardo Minguez
- Department of Graphic Design and Engineering Projects, University of the Basque Country, 48013 Bilbao, Spain.
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