Posterior Disk Displacement in the Temporomandibular Joint: A Report of Two Cases
김지훈, 김문종, 고홍섭,
소속 상세정보
김지훈 ( Kim Ji-Hoon ) - Seoul National University School of Dentistry Department of Oral Medicine and Oral Diagnosis
김문종 ( Kim Moon-Jong ) - Seoul National University School of Dentistry Department of Oral Medicine and Oral Diagnosis
고홍섭 ( Kho Hong-Seop ) - Seoul National University School of Dentistry Department of Oral Medicine and Oral Diagnosis
KMID : 0355220160410030137
Abstract
Posterior disk displacement (PDD) of the temporomandibular joint (TMJ) is a rare condition and most descriptions of TMJ PDD are about the adhesion of superior TMJ in which the position of disk is relatively posterior to anteriorly translated condyle in open mouth position. However, there have been reports about truly posteriorly positioned disk to the condyle in closed mouth position. This type of PDD has been classified into three subtypes?thin flat disk type, grossly posterior displaced disk type, and perforated disk type. Here, we report two rare cases of TMJ PDD, one with thin flat disk and one with perforated disk. Its possible etiology, pathogenetic mechanisms, related signs and symptoms, differential diagnoses, and treatments were reviewed and discussed.
키워드
Posterior disk displacement; Temporomandibular joint
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