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. 2020 Feb;48(2):300060519892388.
doi: 10.1177/0300060519892388. Epub 2019 Dec 27.

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

Min Lin  1 , Yifei Xu  2 , Hao Wu  1 , Haixia Zhang  1 , Shuang Wang  1 , Kun Qi  1
Affiliations

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

Min Lin et al. J Int Med Res. 2020 Feb.

Abstract

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.

Keywords: Cone-beam computed tomography; condylar position; osteoarthritis; skeletal class II females; temporomandibular joint; vertical facial types.

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Conflict of interest statement

The authors declare that there is no conflict of interest.

Figures

Figure 1.
Figure 1.
(a) Axial view shows the maximum condylar area as the reference for the secondary reconstruction. a: Coronal reference line. b: Sagittal reference line. (b) Sagittal cross-sectional image corresponding to line b shown in (a). (c) AB: Mediolateral diameter of the condyle. CD: Anteroposterior diameter of the condyle.
Figure 2.
Figure 2.
(a) GH: Depth of the glenoid fossa. EF: Width of the glenoid fossa. (b) ML: Height of the condylar head. JK: Width of the condylar head. (c) OP: Length of the condyle. (d) β: Inclination of the articular eminence. (e) q: Height of the articular eminence. (f) a: Anterior joint space. s: Superior joint space. p: Posterior joint space.
See this image and copyright information in PMC

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