Comparative cone-beam computed tomography evaluation of the osseous morphology of the temporomandibular joint in temporomandibular dysfunction patients and asymptomatic individuals
- 237 Downloads
We examined the bone components of the temporomandibular joint (TMJ) in asymptomatic individuals and patients with temporomandibular dysfunction (TMD) using cone-beam computed tomography (CBCT).
Two hundred asymptomatic individuals and 200 patients with TMD were included in this study. Condyle position, eminence height, eminence inclination, condyle shape, and fossa shape were assessed on CBCT images of the 800 temporomandibular joints.
The eminence inclination (P < 0.05), eminence height (P < 0.0001), mediolateral width of condyle (P < 0.0001), and anterior joint space (P < 0.0001) were significantly greater in male subjects compared with female subjects in both the asymptomatic group and TMD group. Comparisons of the asymptomatic group and TMD group revealed significant differences in the anterior joint space (P < 0.0001), ratio of anterior joint space to posterior joint space (P < 0.001), posterior joint space (P < 0.05), eminence inclination (P < 0.05), eminence height (P < 0.05), condyle shape (P < 0.0001), and fossa shape (P < 0.05).
The present analyses suggest that a steeper articular eminence inclination may be risk factor for TMD. The presence of TMD was associated with the condyle position in the TMJ.
KeywordsCone-beam computed tomography Articular eminence Temporomandibular dysfunction Temporomandibular joint morphology
Compliance with Ethical Standards
Conflict of interest
Yasin Yasa and Hayati Murat Akgül declare that they have no conflict of interest.
Informed consent was obtained from all patients for being included in the study.
Research involving human participants and/or animals
All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions.
- 1.Okeson JP. Management of temporomandibular disorders and occlusion. St Louis: Elsevier Health Sciences; 2014.Google Scholar
- 3.Laskin DM, Greene CS, Hylander WL. Temporomandibular disorders: an evidence-based approach to diagnosis and treatment. Hanover Park: Quintessence Publishing Company; 2006.Google Scholar
- 11.Farman AG, Ludlow JB, Davies KL, Tyndall DA. Temporomandibular joint imaging: a comparative study of diagnostic accuracy for the detection of bone change with biplanar multidirectional tomography and panoramic images. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 1995;80:735–43.CrossRefGoogle Scholar
- 18.Kobayashi K, Shimoda S, Nakagawa Y, Yamamoto A. Accuracy in measurement of distance using limited cone-beam computerized tomography. Int J Oral Maxillofac Implants. 2003;19:228–31.Google Scholar
- 21.Sülün T, Cemgil T, Duc J-MP, Rammelsberg P, Jäger L, Gernet W. Morphology of the mandibular fossa and inclination of the articular eminence in patients with internal derangement and in symptom-free volunteers. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2001;92:98–107.CrossRefPubMedGoogle Scholar
- 23.Ren Y-F, Isberg A, Westesson P-L. Steepness of the articular eminence in the temporomandibular joint: tomographic comparison between asymptomatic volunteers with normal disk position and patients with disk displacement. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 1995;80:258–66.CrossRefPubMedGoogle Scholar
- 38.Matsumoto K, Kameoka S, Amemiya T, Yamada H, Araki M, Iwai K, et al. Discrepancy of coronal morphology between mandibular condyle and fossa is related to pathogenesis of anterior disk displacement of the temporomandibular joint. Oral Surg Oral Med Oral Pathol Oral Radiol. 2013;116:626–32.CrossRefPubMedGoogle Scholar