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Articular Eminence Morphology of Temporomandibular Joint in Young Korean Adults
J Oral Med Pain 2019;44:59-64
Published online June 30, 2019;  https://doi.org/10.14476/jomp.2019.44.2.59
© 2019 Korean Academy of Orofacial Pain and Oral Medicine

Hyun Nam1, Young-Joo Shim1,2, Jin-Kyu Kang1,2

1Department of Orofacial Pain and Oral Medicine, Wonkwang University Daejeon Dental Hospital, Daejeon, Korea, 2Wonkwang Dental Research Institute, Wonkwang University, Iksan, Korea
Correspondence to: Jin-Kyu Kang Department of Orofacial Pain and Oral Medicine, Wonkwang University Daejeon Dental Hospital, 77 Dunsan-ro, Seo-gu, Daejeon 35233, Korea Tel: +82-42-366-1125 Fax: +82-42-366-1115 E-mail: orofacial@wku.ac.kr https://orcid.org/0000-0001-7668-7468
Received June 12, 2019; Revised June 17, 2019; Accepted June 17, 2019.
This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Purpose: The aim of this study was to analyse and evaluate the morphology of the articular eminence of temporomandibular joint in young Korean adults using cone-beam computed tomography (CBCT).
Methods: One hundred seventy-one subjects (59 males, 112 females) in the 20s were examined using CBCT. Width and height of articular eminence, top-roof line angle, best-fit line angle, joint space were measured. For the group comparisons, independent t-test was used with the level of significance established at p≤0.05.
Results: In asymptomatic young Korean adults, average eminence width was 9.49±1.62 mm in males and 9.33±1.36 mm in females. Average eminence height was 7.23±1.81 mm in males and 6.82±1.31 mm in females. Average eminence inclination of measured by toproof line angle was 37.09°±7.74° in males and 36.12°±5.65&3176; in females. Average eminence inclination measured by best-fit line angle was 50.79°±11.49° in males and 48.43°±9.05° in females. Average joint space was 3.03±0.67 mm in males and 2.63±0.68 mm in females.
Conclusions:Increasing age did not affect the morphology of the articular eminence in asymptomatic young Korean adults. Males had slightly larger eminence width, height, toproof line angle, best-fit line angle and joint space, but no statistical significance (p>0.05) was observed only in the joint space (p=0.001). There was no side-to-side difference in morphology (p>0.05).
Keywords : Articular eminence; Cone-beam computed tomography; Temporomandibular joint


June 2019, 44 (2)