Does the horizontal condylar angle have a relationship with temporomandibular joint osteoarthritis and condylar position? A cone-beam computed tomography study

ABSTRACT Objectives: The aim of the study is to investigate the condylar position and its relation to articular eminence and axial condylar angle in temporomandibular joint disorder (TMD) patients and in normal controls using cone beam computed tomography (CBCT). Materials and Methods: CBCT temporomandibular joint (TMJ) images of 70 participants (38 males and 32 females, mean age 26.4 years) were analyzed. They were divided into control group (including 35 subjects) and study group (including 35 subjects). Linear measurements of joint space and condyle determined the condylar position of each TMJ. Articular eminence height and inclination were also measured with axial condylar angle to determine its relation to condylar position. Independent and paired sample t-test was applied to compare between the groups and TMJ sides of the same group at significance level of 0.05. Results: Statistical significant differences were found between males and females of both groups regarding superior joint space (SJS), lateral joint space, A-P, and M-L condyle distance (P < 0.05). SJS, medial joint space (MJS), and eminence angle were greater (P < 0.01) in male's joints with TMD with flatter axial condylar angle (P < 0.05), when compared with normal TMJ counterpart. Females TMJs showed significantly higher values of MJS of affected side when compared with normal counterpart with flatter axial condylar angle (P < 0.05). Conclusion: Superior and MJS parameters were the ones that showed significant differences between affected and nonaffected joints. The mean axial condylar angle was smaller in joints with abnormal TMJ. This indicates that the condyles of the affected joints may rotate inward.

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Temporomandibular joint osteoarthritis: cone beam computed tomography findings, clinical features, and correlations

International Journal of Oral and Maxillofacial Surgery ◽

10.1016/j.ijom.2015.06.023 ◽

2015 ◽

Vol 44 (10) ◽

pp. 1268-1274 ◽

Cited By ~ 37

Author(s):

S. Cömert Kiliç ◽

N. Kiliç ◽

M.A. Sümbüllü

Keyword(s):

Computed Tomography ◽

Temporomandibular Joint ◽

Clinical Features ◽

Cone Beam Computed Tomography ◽

Cone Beam ◽

Temporomandibular Joint Osteoarthritis

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Comparative cone-beam computed tomography evaluation of temporomandibular joint position and morphology in female patients with skeletal class II malocclusion

Journal of International Medical Research ◽

10.1177/0300060519892388 ◽

2019 ◽

Vol 48 (2) ◽

pp. 030006051989238

Author(s):

Min Lin ◽

Yifei Xu ◽

Hao Wu ◽

Haixia Zhang ◽

Shuang Wang ◽

...

Keyword(s):

Computed Tomography ◽

Temporomandibular Joint ◽

Cone Beam Computed Tomography ◽

Class Ii ◽

Cone Beam ◽

Class Ii Malocclusion ◽

Skeletal Class ◽

Female Patients ◽

Skeletal Class Ii ◽

Condylar Position

Objective This study was performed to evaluate the position and morphology of the temporomandibular joint in female patients with skeletal class II malocclusion and to investigate the association between temporomandibular joint disorders and facial types using cone-beam computed tomography. Methods A lateral cephalogram was taken to determine the skeletal class of each participant. Sixty female patients aged 16 to 28 years were divided into high-angle, low-angle, and control groups. The shape of the condyle–fossa was measured and assessed on cone-beam computed tomography images of the 120 temporomandibular joints. Results Some condylar shape measurements displayed statistically significant differences among the groups. No significant differences were found in the length of the condyle, width of the glenoid fossa, or height of the articular eminence among the three groups. The posterior condylar position was more frequently observed in the low-angle group, whereas the anterior condylar position was more prevalent in the high-angle group. Conclusion The present study revealed differences in the condyle–fossa morphology and position in female patients with skeletal class II malocclusion with different vertical facial types.

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New Method for Analysis of the Temporomandibular Joint Using Cone Beam Computed Tomography

Sensors ◽

10.3390/s21093070 ◽

2021 ◽

Vol 21 (9) ◽

pp. 3070

Author(s):

Sebastian Iwaszenko ◽

Jakub Munk ◽

Stefan Baron ◽

Adam Smoliński

Keyword(s):

Computed Tomography ◽

Temporomandibular Joint ◽

Cross Section ◽

Cone Beam Computed Tomography ◽

Cone Beam ◽

Section Plane ◽

New Approach ◽

Volume Of Interest ◽

Gap Width

Modern dentistry commonly uses a variety of imaging methods to support diagnosis and treatment. Among them, cone beam computed tomography (CBCT) is particularly useful in presenting head structures, such as the temporomandibular joint (TMJ). The determination of the morphology of the joint is an important part of the diagnosis as well as the monitoring of the treatment results. It can be accomplished by measurement of the TMJ gap width at three selected places, taken at a specific cross-section. This study presents a new approach to these measurements. First, the CBCT images are denoised using curvilinear methods, and the volume of interest is determined. Then, the orientation of the vertical cross-section plane is computed based on segmented axial sections of the TMJ head. Finally, the cross-section plane is used to determine the standardized locations, at which the width of the gap between condyle and fossa is measured. The elaborated method was tested on selected TMJ CBCT scans with satisfactory results. The proposed solution lays the basis for the development of an autonomous method of TMJ index identification.

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Temporomandibular Joint Osseous Morphology of Class I and Class II Malocclusions in the Normal Skeletal Pattern: A Cone-Beam Computed Tomography Study

Diagnostics ◽

10.3390/diagnostics11030541 ◽

2021 ◽

Vol 11 (3) ◽

pp. 541

Author(s):

Xiao-Chuan Fan ◽

Lin-Sha Ma ◽

Li Chen ◽

Diwakar Singh ◽

Xiaohui Rausch-Fan ◽

...

Keyword(s):

Computed Tomography ◽

Temporomandibular Joint ◽

Cone Beam Computed Tomography ◽

Class Ii ◽

Class I ◽

Cone Beam ◽

Glenoid Fossa ◽

Linear Measurements ◽

Significant Difference ◽

Skeletal Pattern

(1) Background—The aim of the present study was to evaluate the correlation between the temporomandibular joint (TMJ) osseous morphology of normal skeletal pattern individuals with different dental malocclusions by using cone-beam computed tomography (CBCT). (2) Methods—The CBCT images of bilateral TMJs in 67 subjects with skeletal class I and average mandibular angle (26 males and 41 females, age range 20–49 years) were evaluated in this study. The subjects were divided into class I, class II division 1, and class II division 2 according to the molar relationship and retroclination of the maxillary incisors. Angular and linear measurements of TMJ were evaluated and the differences between the groups were statistically analyzed. (3) Results—Intragroup comparisons showed statistical differences for articular eminence inclination, the width of the glenoid fossa, the ratio of the width of the glenoid fossa to the depth of the glenoid fossa, the condylar angle, and the intercondylar angle between the malocclusion groups. The measurements of the glenoid fossa shape showed no significant difference between the left and right sides. Females showed more differences in the morphological parameters of TMJ between the three malocclusion groups than the males. (4) Conclusion—The present study revealed differences in the TMJ osseous morphology between dental class I and class II malocclusions in the normal skeletal pattern.

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