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Wu J, Jia W, Su X, Zhang K, Huang Y, Lei Y. Three-dimensional analysis of mandibular morphology asymmetry and temporomandibular joint position in patients with unilateral Brodie bite. Orthod Craniofac Res 2024; 27:474-484. [PMID: 38217321 DOI: 10.1111/ocr.12755] [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] [Accepted: 01/01/2024] [Indexed: 01/15/2024]
Abstract
OBJECTIVE Previous studies have shown unilateral posterior crossbite is associated with mandibular asymmetry in morphology and position. However, it remains unclear whether unilateral Brodie bite plays a similar role in mandibular development. Therefore, this study aims to investigate the morphological and positional symmetry of mandibles in patients with unilateral Brodie bite by three-dimensional anaylsis. METHODS Fourteen patients with unilateral Brodie bite (mean age 18.43 ± 4.24 years) and fourteen sex- and age-matched patients with normal occlusion (mean age 18.07 ± 5.48 years) underwent cone-beam computed tomography (CBCT) scans. 3D surface mesh models of their mandibles were established using Mimics Research 19.0. The surface matching percentage was compared between the original and mirrored mandible by Geomagic Control X software. Furthermore, the dimension and position of the temporomandibular joint (TMJ) were determined for both groups using InVivoDental 5.0. RESULTS For surface-to-surface deviation analysis, the percentage of mismatch in patients with unilateral Brodie bite was significantly higher than the control group at ±0.50 mm, ±0.75 mm, and ±1.00 mm tolerance (P < .001). In patients with unilateral Brodie syndrome, the condyles on the scissors-bite side showed a significantly more anterior position (P = .03), greater medial inclination (P < .01), and larger posterior TMJ space (P = .01) than the non-scissors-bite side. CONCLUSION Patients with unilateral Brodie bite exhibit a more asymmetrical mandibular morphology, with a greater anterior condylar position and posterior joint space on the scissors-bite side, indicating that early diagnosis and treatment may be necessary for patients with unilateral Brodie bite.
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Affiliation(s)
- J Wu
- Department of Prosthodontics and Orthodontics, Center of Stomatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Department of Orthodontics, Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
- Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - W Jia
- Department of Stomatology, The Second People's Hospital of Hunan province, Changsha, Hunan, China
| | - X Su
- Department of Prosthodontics and Orthodontics, Center of Stomatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - K Zhang
- Department of Prosthodontics and Orthodontics, Center of Stomatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Y Huang
- Department of Prosthodontics and Orthodontics, Center of Stomatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Y Lei
- Department of Prosthodontics and Orthodontics, Center of Stomatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
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Shu KY, Liu W, Zhao JL, Zhang ZY, Shan BG, Li XY, Ma LK. Condylar resorption post mandibular distraction osteogenesis in craniofacial microsomia: A retrospective study. J Craniomaxillofac Surg 2023; 51:675-681. [PMID: 37852887 DOI: 10.1016/j.jcms.2023.10.001] [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: 03/28/2022] [Revised: 09/12/2023] [Accepted: 10/05/2023] [Indexed: 10/20/2023] Open
Abstract
The aim of this study was to investigate the characteristics of condylar resorption in craniofacial microsomia (CFM) patients following mandibular distraction osteogenesis (MDO). Patients with unilateral type-IIa and type-IIb CFM, who had completed MDO and mandibular distractor extraction (MDE), were recruited. The height and volume of the condyle were measured on three-dimension models created by the analysis of computed tomography (CT) data. Normality analysis was performed using the Shapiro-Wilk test. Data for the affected and unaffected sides were compared using the paired t-test or Wilcoxon signed-rank test. Data for both type-IIa and type-IIb CFM were compared using the independent-samples t-test or Mann-Whitney U test. The Pearson or Spearman correlation was used to determine the correlations of condylar resorption rate with related measurements. In total, 48 type-IIa and 48 type-IIb CFM patients were included. The condylar resorption rate in type-IIa CFM (0.35 ± 0.32) was significantly associated with the height of the condyle (r = 0.776, p < 0.001) and distraction distance (r = 0.447, p = 0.001), while the condylar resorption rate in type-IIb CFM (0.49 ± 0.46) was significantly associated with the height of the condyle (r = 0.924, p < 0.001). However, there was no significant difference in condylar resorption rate between type-IIa and type-IIb CFM (p = 0.075). In addition to occlusal changes, no other negative symptoms of the TMJ were observed with condylar resorption. Condylar resorption was evident in CFM patients following mandibular distraction osteogenesis, and the condylar resorption rate showed a relationship with distraction distance and condylar height.
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Affiliation(s)
- Kai-Yi Shu
- Department of Medical Cosmetology and Plastic Surgery, The Third People's Hospital of Chengdu, Chengdu, China
| | - Wei Liu
- Department of Maxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jiu-Li Zhao
- Department of Maxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhi-Yong Zhang
- Department of Maxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Ba-Ga Shan
- Department of Maxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xi-Yuan Li
- Department of Maxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Lun-Kun Ma
- Department of Maxillofacial Surgery, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Alhammadi MS, Almashraqi AA, Thawaba AA, Fayed MMS, Aboalnaga AA. Dimensional and positional temporomandibular joint osseous characteristics in normodivergent facial patterns with and without temporomandibular disorders. Clin Oral Investig 2023; 27:5011-5020. [PMID: 37358688 PMCID: PMC10492742 DOI: 10.1007/s00784-023-05120-0] [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: 11/09/2022] [Accepted: 06/08/2023] [Indexed: 06/27/2023]
Abstract
OBJECTIVE This study evaluated the dimensional and positional osseous temporomandibular joint features in normodivergent facial patterns with and without temporomandibular disorders. METHODS A total of 165 adult patients were divided into two groups: group 1 (n = 79 patients; 158 joints): temporomandibular disorders patients and group 2 (n = 86 patients; 172 joints): non-temporomandibular disorders patients. Three-dimensional positional and dimensional temporomandibular joint characteristics, including glenoid fossa, mandibular condyles, and joint spaces, were assessed by cone beam computed tomography. RESULTS The glenoid fossa positions in the three orthogonal planes and height showed statistical significance between the two studied groups. The temporomandibular disorders patients showed higher horizontal and vertical condyle inclinations while anteroposterior inclination was less, and the condyle was positioned more superior, anterior, and lateral in the glenoid fossa. The condyle width and length showed no significance between the two groups, while condyle height was smaller in temporomandibular disorders patients. Anterior and medial joint spaces increased while the superior and posterior joint spaces reduced in temporomandibular disorders patients. CONCLUSION There were significant differences between the patients with and without temporomandibular joint disorders in terms of mandibular fossa positions and height as well as condylar positions and inclinations in horizontal and vertical planes together with reduced condylar height and reduced posterior and superior joint spaces in the temporomandibular disorders patients. CLINICAL RELEVANCE The temporomandibular disorder is a multifactorial disorder in which one of these factors is the dimensional and positional characteristics of the temporomandibular joints; including or excluding this factor requires a comprehensive three-dimensional investigation of patients with TMD compared to the normal group under the condition that the facial pattern is average as a confounding factor.
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Affiliation(s)
- Maged S. Alhammadi
- Department of Preventive Dental Sciences, College of Dentistry, Jazan University, Jazan, Saudi Arabia
| | - Abeer A. Almashraqi
- Department of Pre-Clinical Oral Health Sciences, College of Dental Medicine, QU Health, Qatar University, Doha, Qatar
| | - Ahmed A. Thawaba
- Orthodontic Department, Faculty of Dentistry, Mansoura University, Mansoura, Egypt
| | - Mona M. Salah Fayed
- Department of Orthodontics, Faculty of Dentistry, Cairo University and Vice Dean for Postgraduate Studies and Research, Faculty of Dentistry, MSA University, Cairo, Egypt
| | - Amira A. Aboalnaga
- Department of Orthodontics, Faculty of Dentistry, Cairo University, Cairo, Egypt
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Akbulut AS, Akca Karpuzoglu AH. Evaluation of Temporomandibular Joint in Patients with Parkinson's Disease: A Comparative Study. Diagnostics (Basel) 2023; 13:2482. [PMID: 37568844 PMCID: PMC10416915 DOI: 10.3390/diagnostics13152482] [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: 05/31/2023] [Revised: 07/11/2023] [Accepted: 07/19/2023] [Indexed: 08/13/2023] Open
Abstract
(1) The aim of this study was to perform an evaluation of the temporomandibular joint (TMJ) in patients with Parkinson's disease (PD) and present the morphological differences of the TMJ between healthy subjects and patients with PD. (2) A total of 102 Caucasian subjects were divided equally into two groups. The study group consisted of patients with PD, while the control group comprised healthy subjects. Ten parameters, including anterior joint space (AJS), superior joint space (SJS), posterior joint space (PJS), condyle head length (CHL), condylar neck width (CNW), minor axis of the condyle (MAC), long axis of the condyle (LAC), condylar axis inclination (CI), medial joint space (MJS), and lateral joint space (LJS), were measured using magnetic resonance images. The data were statistically analyzed using paired samples t-test and Student's t-test, with a significance level set at p < 0.05. (3) In the PD group, all TMJ parameters showed a statistically significant difference between both sides of the face (p < 0.05). However, in the control group, AJS, SJS, PJS, CHL, CNW, MAC, CI, MJS, and LJS did not show a statistically significant difference between both sides of the face (p > 0.05), except for LAC (p < 0.05). The asymmetry index values of AJS, SJS, PJS, CHL, CNW, MAC, CI, MJS, and LJS demonstrated a statistically significant difference between the study and control groups (p < 0.05), except for LAC (p > 0.05). (4) Within the limitations of this retrospective study, the findings suggest that TMJ morphology and asymmetry could be associated with PD.
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Al-Tayar B, Al-Somairi MAA, ALshoaibi LH, Wang X, Wang J, Liu J, Al-Tayar B, An X, Si Q. Impact of molar teeth distalization by clear aligners on temporomandibular joint: a three-dimensional study. Prog Orthod 2023; 24:25. [PMID: 37455279 DOI: 10.1186/s40510-023-00474-3] [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: 12/21/2022] [Accepted: 05/15/2023] [Indexed: 07/18/2023] Open
Abstract
BACKGROUND Maxillary molar distalization is a common technique used in the non-extraction treatment of Angle Class II malocclusion that can effectively correct the molar relationship and create spaces for anterior teeth alignment. However, this approach may also impact the temporomandibular joint (TMJ) due to predictable changes in the posterior vertical dimension. Despite its widespread use, Class II malocclusions correction by molar distalization with clear aligners has not been investigated for their effects on the TMJ. Therefore, this study aimed to analyze the impact of sequential molar distalization using clear aligners on the TMJ. METHODS Three-dimensional CBCT scans of 23 non-growing patients (7 males, 16 females; mean age 29.8 ± 4.6 years) with skeletal class I or II malocclusion and a bilateral molar class II relationship treated by sequential upper molars distalization with orthodontic clear aligners (Invisalign, Align Technology, San Josè, Ca, USA). A total of 46 joints were examined before and after molar distalization using Anatomage InvivoDental 6.0.3. Linear and angular measurements of the mandibular joint were measured, including joint parameters, inclination, position, and the dimension of the condyle and articular fossa. In addition, 3D volumetric spaces of the joint were analyzed. All data were statistically analyzed by paired T test to determine the differences between the pre-and post-orthodontic procedures. RESULTS No statistically significant differences were found in all primary effects resulting from maxillary molars distalization by clear aligners on TMJ components measurements and joint spaces between T0 and T1. Meanwhile, statistically significant differences were observed in the linear position of the upper molars and the molar relationship parameter with at least P ≤ 0.05. CONCLUSION Treatment by sequential upper molars distalization with clear aligners does not lead to significant TMJ parameters changes in condyle and fossa spaces, dimensions, and positions.
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Affiliation(s)
- Barakat Al-Tayar
- Department of Orthodontics, School of Stomatology, Lanzhou University, Lanzhou, 730000, China
- Orthodontics Division, Faculty of Medicine and Health Sciences, Taiz University, Taiz, Yemen
| | - Majedh A A Al-Somairi
- Orthodontics Department, School of Stomatology, China Medical University, Shenyang, 110000, China
| | - Lina H ALshoaibi
- Department of Orthodontics, School of Stomatology, Lanzhou University, Lanzhou, 730000, China
| | - Xiaoli Wang
- Department of Orthodontics, School of Stomatology, Lanzhou University, Lanzhou, 730000, China
| | - Junbin Wang
- Department of Orthodontics, School of Stomatology, Lanzhou University, Lanzhou, 730000, China
| | - Jiajie Liu
- Department of Orthodontics, School of Stomatology, Lanzhou University, Lanzhou, 730000, China
| | - Baher Al-Tayar
- Graduate Student of Dental Health Science, Faculty of Dental Medicine, Universitas Airlangga, Surabaya, Indonesia
- Department of Dentistry, Faculty of Medical Sciences, Aljanad University for Science and Technology, Taiz, Yemen
| | - Xiaoli An
- Department of Orthodontics, School of Stomatology, Lanzhou University, Lanzhou, 730000, China.
| | - Qingzong Si
- Department of Oral Medicine, School of Stomatology, Lanzhou University, Lanzhou, 730000, China
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Said Ahmed MAA. Use of the Anatomage Virtual Table in Medical Education and as a Diagnostic Tool: An Integrative Review. Cureus 2023; 15:e35981. [PMID: 37041931 PMCID: PMC10083048 DOI: 10.7759/cureus.35981] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/10/2023] [Indexed: 03/12/2023] Open
Abstract
Studies on human anatomy mainly depend on cadaver dissection. New technology devices have progressed to improve anatomy teaching, such as the 3D Anatomage virtual dissection table. There is a shortage and deficiency in information about the uses and benefits of the Anatomage table. The aim of this article was to review and assess the current evidence about the advantages of the Anatomage virtual table in medical education and curricula of medical courses, and its utility in diagnosis. The current study is a comprehensive systematic review. A search was conducted on online medical and scientific databases. Twenty-nine articles relevant to the content of the current research topic were selected. Based on this review, the use of the Anatomage table is valuable for anatomy learning outcomes, and most of the research supported it as an important anatomy tool in addition to cadaveric dissection. The Anatomage table in association with human dissection can improve knowledge retention of anatomy. It is an important tool for understanding organ variation. Anatomage is now considered an important tool for the educational training programs of medical students and residents and for disease diagnosis and prognosis. Anatomage can make the curriculum more interesting and valuable. Utilizing the Anatomage table can help medical and paramedical students and residents by assisting them to understand anatomy in a better way. It will also improve radiological knowledge and facilitate pre-planning for surgeries. Finally, it has a crucial role during exceptional circumstances such as pandemics.
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Three-Dimensional Measurement of the Temporomandibular Joint in Pruzansky-Kaban Type IIa Hemifacial Microsomia. J Craniofac Surg 2023; 34:438-442. [PMID: 35864577 DOI: 10.1097/scs.0000000000008777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 04/11/2022] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVE This observational retrospective cross-sectional study aimed to investigate the morphological characteristics of the temporomandibular joint (TMJ) in type IIa hemifacial microsomia (HFM). METHODS We recruited 88 patients with unilateral type IIa HFM. Data relating to the length, distance, and angle of the TMJ, were measured on 3-dimensional models created by the analysis of computed tomography data. Normality analysis was performed by using the Shapiro-Wilk test. Data were compared with the paired t test and Wilcoxon signed-rank test. RESULTS The height, long axis, and short axis of the affected condyle were significantly shorter than the unaffected side ( P <0.001); the ratios were 0.41±0.15, 0.75±0.20, and 0.95±0.24, respectively. The spaces between the condyle and the glenoid fossa were significantly larger in affected TMJs ( P <0.001). The ratio between the ipsilateral and contralateral anterior space in the sagittal plane was 4.62±2.59; this was significantly different than the ratio of inner space (1.50±1.70), superior space (1.70±0.97), and lateral space (1.28±0.62) in the coronal plane ( P <0.001) and the ratio of superior space (1.43±1.05) and posterior space (1.47±0.98) in the sagittal plane ( P <0.001); there were no statistical differences between the 5 spaces ( P >0.05). The breadth and depth of the glenoid fossa were significantly shorter in affected TMJs ( P <0.001), the ratio of the breadth in the affected and unaffected glenoid fossa was between 0.5 and 1 and the depth of the affected glenoid fossa was almost half of that on the unaffected side. The ratio between the ipsilateral and contralateral height of the condyle was significantly different when compared with the length of the mandibular ramus ( P <0.001). The ratio between the ipsilateral height of the condyle and the length of the mandibular ramus was significantly different when compared with that of the contralateral side ( P <0.001). The height of the affected condyle were significantly different ( P =0.005) among different ages. CONCLUSIONS We found that hypoplasia was more severe in terms of the height of the condyle than the long axis and short axis of the condyle. The degree of condyle deformity was more severe than the mandible. And the affected condyle still had growth potential in the vertical direction with age.
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Morphologic Changes of the Temporomandibular Joint in Pruzansky-Kaban Type IIa Hemifacial Microsomia Postmandibular Distraction Osteogenesis. J Craniofac Surg 2023; 34:591-596. [PMID: 36857566 DOI: 10.1097/scs.0000000000008854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 05/10/2022] [Indexed: 03/03/2023] Open
Abstract
OBJECTIVE Mandibular distraction osteogenesis (MDO) is a powerful tool for the correction of hemifacial microsomia (HFM). The temporomandibular joint (TMJ) is the focus of attention in the diagnosis and treatment of HFM. This observational retrospective cross-sectional study aimed to investigate morphologic changes in TMJ post-MDO in type IIa HFM. METHODS We recruited 48 patients with unilateral type IIa HFM who had completed MDO and mandibular distractor extraction (MDE). Data relating to the length, distance, angle, and volume of the TMJ were measured on 3-dimension models created by the analysis of computed tomography data. Normality analysis was performed by using the Shapiro-Wilk test. Data were compared with the paired t test and Wilcoxon signed-ranks test. RESULTS The spaces between the affected condyle and the affected glenoid fossa before MDO were all significantly larger than before MDE (P<0.05). The breadth of the affected glenoid fossa before MDO was significantly longer than before MDE (P<0.001). The height of the affected condyle before MDO was significantly longer than before MDE (P<0.001). The volume of the affected condyle before MDO was significantly larger than before MDE (P<0.001). The ratio between the volume of the affected condyle and unaffected condyle before MDO was 0.20±0.13. The ratio between the volume of the affected condyle before MDE and MDO was 0.65±0.32. The resorption rate of the affected condyle post-MDO was 0.35±0.32. CONCLUSION Herein, we characterized anatomic changes of the TMJ in type- IIa HFM post-MDO. Condylar resorption and the compression of space between the condyle and the glenoid fossa on the affected side were 2 typical manifestations. Our findings enhanced the understanding of the application of MDO on HFM.
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Al-Wesabi SN, Abotaleb B, Al-Shujaa EA, Mohamed AA, Alkebsi K, Telha W, Jian S, Fuqiang X. Three dimensional condylar positional and morphological changes following mandibular reconstruction based on CBCT analysis: a prospective study. Head Face Med 2023; 19:3. [PMID: 36747208 PMCID: PMC9903492 DOI: 10.1186/s13005-023-00347-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 01/06/2023] [Indexed: 02/08/2023] Open
Abstract
OBJECTIVE This study aimed to evaluate the condylar positional changes following mandibular reconstruction with preservation of the condylar head using Cone-Beam Computed Tomography (CBCT). Also, to assess joint space changes and the overall volumetric space compared to the preoperative status. METHODOLOGY This prospective study included 30 patients (60 joints) subjected to unilateral mandibular resection and reconstruction with preservation of the condylar head. The Helkimo index and preoperative (T1), two weeks postoperative (T2), and follow-up CBCTs (T3) after at least six months were gathered and processed to evaluate the condylar position and TMJ joint space using Anatomage Invivo 6. A student's t-test and repeated-measures ANOVA statistics were used. A P value of less than 0.05 was considered statistically significant. RESULTS Thirty patients (14 males, 16 females) with a mean age of 40.01 ± 12.7 years (a range of 18.1-62.9 years) were included. On the tumor side, there were significant variances in the vertical and mediolateral condylar positions between the three-time points (T1, T2, T3). Immediately after the operation, the condyles were significantly displaced in a downward direction at T2, which became larger after the last follow-up period (T3) (p = 0.007). The condylar positions at the anteroposterior direction were relatively stable without significant differences between the three times points (p = 0.915). On the non-tumor side, the condylar positions were relatively stable in the mediolateral and anteroposterior positions. In the tumor side, all of the TMJ spaces were significantly increased in size following the mandibular reconstructions (T2 and T3). However, on the non-tumor side, the anterior, posterior, and medial joint spaces were significantly changed postoperatively. CONCLUSION After mandibular reconstruction with condylar preservation, the condylar position and volumetric measurement immediately changed noticeably and continued to be a permanent change over time compared to relatively stable condyles on the non-tumor side. According to Helkimo index, patients become adapted to the postoperative changes without significant differences between the two sides.
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Affiliation(s)
- Saddam Noman Al-Wesabi
- Lanzhou University, Second Hospital, Oral and Maxillofacial Surgery Department, Lanzhou, Gansu Province, China. .,State Key Laboratory of Oral Diseases and National Clinical Research Centre for Oral Diseases, Department of Oral implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China. .,Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Ibb University, Ibb, Yemen.
| | - Bassam Abotaleb
- grid.444909.4Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Ibb University, Ibb, Yemen
| | - Eissa Abdo Al-Shujaa
- grid.32566.340000 0000 8571 0482Lanzhou University, Second Hospital, Oral and Maxillofacial Surgery Department, Lanzhou, Gansu Province China ,grid.444909.4Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Ibb University, Ibb, Yemen
| | - Abdo Ahmed Mohamed
- grid.412536.70000 0004 1791 7851Department of Oral & Maxillofacial Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Khaled Alkebsi
- grid.13291.380000 0001 0807 1581State Key Laboratory of Oral Diseases and National Clinical Research Centre for Oral Diseases, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan China
| | - Wael Telha
- grid.13291.380000 0001 0807 1581State Key Laboratory of Oral Diseases and National Clinical Research Centre for Oral Diseases, Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan China
| | - Sun Jian
- grid.32566.340000 0000 8571 0482Lanzhou University, Second Hospital, Oral and Maxillofacial Surgery Department, Lanzhou, Gansu Province China
| | - Xie Fuqiang
- Lanzhou University, Second Hospital, Oral and Maxillofacial Surgery Department, Lanzhou, Gansu Province, China.
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Alhammadi MS. Dimensional and Positional Characteristics of the Temporomandibular Joint of Skeletal Class II Malocclusion with and without Temporomandibular Disorders. J Contemp Dent Pract 2022; 23:1203-1210. [PMID: 37125517 DOI: 10.5005/jp-journals-10024-3441] [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: 05/02/2023]
Abstract
AIM This study sought to evaluate dimensional and positional temporomandibular joint (TMJ) features in three-dimensions in skeletal class II malocclusion with and without temporomandibular disorders (TMDs). MATERIALS AND METHODS A total of 91 (182 joints) adult patients were divided into the following two groups: (1) Group I - TMD (n = 56; 112 joints) and (2) group II - non-TMD (n = 35; 70 joints). Dimensional and positional TMJ characteristics including glenoid fossae, mandibular condyles, and joint spaces were assessed using cone-beam computed tomography (CBCT). RESULTS The mandibular fossa in the TMD group was significantly more lateral than in the non-TMD group, and the mandibular fossa anterior wall inclination to the horizontal plane showed a significantly more vertically inclined wall in the TMD group compared to the non-TMD group. Significantly vertical mandibular condylar changes in the form of less vertical inclination, more vertical position, and lower vertical dimension (height) in addition to more upward position within the joint space were found. The TMD group showed significantly decreased superior and posterior joint spaces in addition to significantly increased medial joint spaces. CONCLUSION Patients with TMDs are associated with laterally positioned mandibular fossa with the more vertically inclined anterior wall. They are characterized by vertical mandibular condylar changes in the form of less vertical inclination, more vertical position, and lower vertical dimension (height) in addition to more upward positioning within the joint space is accompanied by a decrease in superior and posterior and an increase in medial joint spaces. CLINICAL SIGNIFICANCE The TMJ characteristics of skeletal class II make it more susceptible to TMDs and any orthodontic and/or surgical interventions in a direction possibly change these characteristics are to be considered.
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Affiliation(s)
- Maged S Alhammadi
- Department of Preventive Dental Sciences, College of Dentistry, Jazan University, Jazan, Saudi Arabia, Phone: +00966502209874, e-mail: , Orcid: https://orcid.org/0000-0002-1402-0470
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Al-Hadad SA, ALyafrusee ES, Abdulqader AA, Al-Gumaei WS, Al-Mohana RAAM, Ren L. Comprehensive three-dimensional positional and morphological assessment of the temporomandibular joint in skeletal Class II patients with mandibular retrognathism in different vertical skeletal patterns. BMC Oral Health 2022; 22:149. [PMID: 35484618 PMCID: PMC9052647 DOI: 10.1186/s12903-022-02174-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 04/08/2022] [Indexed: 12/15/2022] Open
Abstract
Background Only a few studies have used 3D cone-beam computed tomography (CBCT) analysis to evaluate the positional and morphological characteristics of the temporomandibular joint (TMJ) in adults with skeletal Class II. No studies have focused on the case of skeletal Class II with mandibular retrognathism in different vertical skeletal patterns. As a result, this study aimed to evaluate and compare the position and morphology of TMJ in adults with skeletal Class II with mandibular retrognathism in different vertical skeletal patterns to the position and morphology of TMJ in the normal Chinese adult population in three dimensions. Methods This retrospective study analyzed CBCT images of 80 adult patients. Subjects with skeletal Class II with a normal sagittal position of the maxilla and mandibular retrognathism were classified according to the mandibular angle and facial height ratio into three groups of 20 subjects each: hypodivergent, normodivergent, and hyperdivergent groups, as well as a control group of 20 subjects. The following 3D measurements of TMJ were evaluated: (1) position, parameters, and inclination of the mandibular fossa; (2) position, parameters, and inclination of the mandibular condyle; (3) condyle centralization in their respective mandibular fossae; (4) anterior, posterior, superior, and medial joint spaces; and (5) 3D volumetric measurements of the TMJ spaces. Measurements were statistically analyzed by one-way ANOVA test, followed by Tukey’s post hoc test. Results Significant differences were found in the hyperdivergent and hypodivergent groups compared with the normal group in the vertical and anteroposterior mandibular fossa position, vertical condylar inclination, and condylar width and length. The hyperdivergent group showed the significantly highest condylar inclination with the midsagittal plane; anterior and superior positioning of the condyle; smallest anterior, superior, and medial joint spaces; and largest volumetric total joint space relative to the two other groups. Conclusions The condyle-fossa position and morphology differ with various vertical facial patterns in individuals with skeletal Class II mandibular retrognathism. These differences could be considered during TMD diagnosis and orthodontic treatment. Supplementary Information The online version contains supplementary material available at 10.1186/s12903-022-02174-6.
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Affiliation(s)
- Saba Ahmed Al-Hadad
- Department of Orthodontics, School of Stomatology, Lanzhou University, Lanzhou, China
| | - Enas Senan ALyafrusee
- Department of Orthodontics, School of Stomatology, Lanzhou University, Lanzhou, China.,Department of Orthodontics and Dentofacial Orthopedics, Faculty of Dentistry, Ibb University, Ibb, Republic of Yemen
| | - Abbas Ahmed Abdulqader
- Department of Orthodontics, West China School of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | | | - Rana A A M Al-Mohana
- Department of Orthodontics and Dentofacial Orthopedics, Faculty of Dentistry, Ibb University, Ibb, Republic of Yemen.,Department of Orthodontics, Affiliated Stomatological Hospital of Jiamusi University, Jiamusi, China
| | - Liling Ren
- Department of Orthodontics, School of Stomatology, Lanzhou University, Lanzhou, China.
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Bartoletti-Stella A, Gatta V, Mariani GA, Gobbi P, Falconi M, Manzoli L, Faenza I, Salucci S. Three-Dimensional Virtual Anatomy as a New Approach for Medical Student's Learning. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph182413247. [PMID: 34948857 PMCID: PMC8702207 DOI: 10.3390/ijerph182413247] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 11/29/2021] [Accepted: 12/06/2021] [Indexed: 12/18/2022]
Abstract
Most medical and health science schools adopt innovative tools to implement the teaching of anatomy to their undergraduate students. The increase in technological resources for educational purposes allows the use of virtual systems in the field of medicine, which can be considered decisive for improving anatomical knowledge, a requisite for safe and competent medical practice. Among these virtual tools, the Anatomage Table 7.0 represents, to date, a pivotal anatomical device for student education and training medical professionals. This review focuses attention on the potential of the Anatomage Table in the anatomical learning process and clinical practice by discussing these topics based on recent publication findings and describing their trends during the COVID-19 pandemic period. The reports documented a great interest in and a positive impact of the use of this technological table by medical students for teaching gross anatomy. Anatomage allows to describe, with accuracy and at high resolution, organ structure, vascularization, and innervation, as well as enables to familiarize with radiological images of real patients by improving knowledge in the radiological and surgical fields. Furthermore, its use can be considered strategic in a pandemic period, since it ensures, through an online platform, the continuation of anatomical and surgical training on dissecting cadavers.
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Affiliation(s)
- Anna Bartoletti-Stella
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, 40126 Bologna, Italy;
| | - Valentina Gatta
- Cellular Signalling Laboratory, Department of Biomedical and NeuroMotor Sciences (DIBINEM), University of Bologna, 40126 Bologna, Italy; (V.G.); (G.A.M.); (M.F.); (L.M.); (I.F.)
| | - Giulia Adalgisa Mariani
- Cellular Signalling Laboratory, Department of Biomedical and NeuroMotor Sciences (DIBINEM), University of Bologna, 40126 Bologna, Italy; (V.G.); (G.A.M.); (M.F.); (L.M.); (I.F.)
| | - Pietro Gobbi
- Department of Biomolecular Sciences (DiSB), Urbino University Carlo Bo, 61029 Urbino, Italy;
| | - Mirella Falconi
- Cellular Signalling Laboratory, Department of Biomedical and NeuroMotor Sciences (DIBINEM), University of Bologna, 40126 Bologna, Italy; (V.G.); (G.A.M.); (M.F.); (L.M.); (I.F.)
| | - Lucia Manzoli
- Cellular Signalling Laboratory, Department of Biomedical and NeuroMotor Sciences (DIBINEM), University of Bologna, 40126 Bologna, Italy; (V.G.); (G.A.M.); (M.F.); (L.M.); (I.F.)
| | - Irene Faenza
- Cellular Signalling Laboratory, Department of Biomedical and NeuroMotor Sciences (DIBINEM), University of Bologna, 40126 Bologna, Italy; (V.G.); (G.A.M.); (M.F.); (L.M.); (I.F.)
| | - Sara Salucci
- Cellular Signalling Laboratory, Department of Biomedical and NeuroMotor Sciences (DIBINEM), University of Bologna, 40126 Bologna, Italy; (V.G.); (G.A.M.); (M.F.); (L.M.); (I.F.)
- Correspondence:
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Loiola MEDA, Fuziy A, Higa RH, Fuziy CHF, Gandini Júnior LG, Costa ALF. In vivo three-dimensional cephalometric landmarks using CBCT for assessment of condylar volume and surface in individuals with Class I, II, and III malocclusions. Cranio 2020:1-6. [DOI: 10.1080/08869634.2020.1857616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
| | - Acácio Fuziy
- Department of Orthodontics, School of Dentistry, State University of Northern Paraná (UENP), Jacarezinho, Brazil
| | - Rodrigo Hitoshi Higa
- Department of Orthodontics, School of Dentistry, State University of Northern Paraná (UENP), Jacarezinho, Brazil
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