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Acute Malocclusion Caused by Articular Disc Perforation: A Case Report
J Oral Med Pain 2018;43:142-146
Published online December 30, 2018;
© 2018 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 Dunsanro, Seo-gu, Daejeon 35233, Korea
Tel: +82-42-366-1125
Fax: +82-42-366-1115
Received November 9, 2018; Revised December 7, 2018; Accepted December 12, 2018.
This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Patients with temporomandibular disorder often present with acute occlusal change and properly managed with conservative treatment. If such change is caused by unusual etiology, differential diagnosis may be challenged. This article describes the diagnosis of a patient exhibiting pain and acute posterior open bite on the ipsilateral side after chewing hard food. After initial conservative treatment failed to resolve the complaint, magnetic resonance imaging was ordered and confirmed partial perforation of articular disc. Disc perforation itself is usually chronic in nature, but sudden macrotrauma may also cause the disorder. However, occlusal discrepancy caused by disc perforation is rare and seldom reported. We present a case of acute malocclusion caused by disc perforation with a review of related literature.
Keywords : Disc perforation; Malocclusion; Posterior disc displacement; Temporomandibular joint

March 2019, 44 (1)