Objective: To examine the morphological properties of temporomandibular joint structures by magnetic resonance imaging (MRI) on patients with and without disc displacement (DD). Methods: Thirty-eight patients with disc displacement and 13 patients without disc displacement were included. Age, gender, and clinical findings such as pain, joint sounds of patients were recorded. The patients were classified as anterior disc displacement with reduction (ADDWR) group, anterior disc displacement without reduction (ADDWoR) group, and control group on MRI. Disc morphology was categorized as biconcave, hemiconvex, biconvex, biplanar, or folded. Condyle morphology was characterized as convex, angled, flat, or rounded. Articular eminence morphology was classified as sigmoid, flattened, box, or deformed. A one-way analysis of variance was used to establish the differences between the values. Results: Biconcave disc and sigmoid articular eminence were the greatest incidence both in ADDWR and control group, folded disc and deformed articular eminence were the most in ADDWoR group. The most frequent types of condyle in DD and control group were flattened and convex, respectively. Statistical difference was found between pain and articular eminence morphology (p=0.02). The statistical difference regarding articular disc (p=0.001) and articular eminence morphology (p=0.02) was determined among the groups. A significant difference between condyle morphology and the presence of self-reported bruxism was detected (p= 0.03). Conclusion: The morphological characteristics of the articular disc and articular eminence are related to DD. It can be said that the morphological changes of temporomandibular joint structures point to DD.


1. Okeson JP. Functional anatomy and biomechanics of the masticatory system. In: Okeson JP, editor. Management of temporomandibular disorders and occlusion. Missouri: Elsevier Health Sciences; 2019. p. 1-38.

2. Amaral Rde O, Damasceno NN, de Souza LA, Devito KL. Magnetic resonance images of patients with temporomandibular disorders: Prevalence and correlation between disk morphology and displacement. Eur J Radiol. 2013; 82(6):990-4.

3. Chang MS, Choi JH, Yang IH, An JS, Heo MS, Ahn SJ. Relationships between temporomandibular joint disk displacements and condylar volume. Oral Surg Oral Med Oral Pathol Oral Radiol. 2018; 125(2):192-8.

4. de Farias JF, Melo SL, Bento PM, Oliveira LS, Campos PS, de Melo DP. Correlation between temporomandibular joint morphology and disc displacement by MRI. Dentomaxillofac Radiol. 2015; 44(7):20150023.

5. Hirata FH, Guimarães AS, Oliveira JX, Moreira CR, Ferreira ET, Cavalcanti MG. Evaluation of TMJ articular eminence morphology and disc patterns in patients with disc displacement in MRI. Braz Oral Res. 2007; 21(3):265-71.

6. Taşkaya-Yilmaz N , Oğütcen-Toller M . Magnetic resonance imaging evaluation of temporomandibular joint disc deformities in relation to type of disc displacement. J Oral Maxillofac Surg. 2001; 59(8):860-5.

7. Manfredini D, Guarda-Nardini L, Winocur E, Piccotti F, Ahlberg J, Lobbezoo F. Research diagnostic criteria for temporomandibular disorders: A systematic review of axis I epidemiologic findings. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2011; 112(4):453-62.

8. Murakami S, Takahashi A, Nishiyama H, Fujishita M, Fuchihata H. Magnetic resonance evaluation of the temporomandibular joint disc position and configuration. Dentomaxillofac Radiol. 1993; 22(4):205-7.

9. Alomar X, Medrano J, Cabratosa J, Clavero JA, Lorente M, Serra I, Monill JM, Salvador A. Anatomy of the temporomandibular joint. Semin Ultrasound CT MR. 2007; 28(3):170-83.

10. Santos KC, Dutra ME, Warmling LV, Oliveira JX. Correlation among the changes observed in temporomandibular joint internal derangements assessed by magnetic resonance in symptomatic patients. J Oral Maxillofac Surg. 2013; 71(9):1504- 12.

11. Bagis B, Ayaz EA, Turgut S, Durkan R, Özcan M. Gender difference in prevalence of signs and symptoms of temporomandibular joint disorders: A retrospective study on 243 consecutive patients. Int J Med Sci. 2012; 9(7):539-44.

12. Matsumoto K, Kameoka S, Amemiya T, Yamada H, Araki M, Iwai K, Hashimoto K, Honda K. 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(5):626-32.

13. Durgha K. Condylar morphology- A review. J Dent Med Sci. 2014; 13(7):57-9.

14. Özkan A, Altuğ HA, Şençimen M, Şenel B. Evaluation of articular eminence morphology and inclination in TMJ internal derangement patients with MRI. Int J Morphol. 2012; 30(2):740-4.

15. Kurita H, Ohtsuka A, Kobayashi H, Kurashina K. Flattening of the articular eminence correlates with progressive internal derangement of the temporomandibular joint. Dentomaxillofac Radiol. 2000; 29(5):277-9.

16. Çağlaya n F, Sü mbü llü M A, A kg ü l HM. Associations between the articular eminence inclination and condylar bone changes, condylar movements, and condyle and fossa shapes. Oral Radiol. 2014; 30:84-91.



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