[Displacement and tissue remodeling of temporomandibular joint disc].

Sounding takes the highest prevalence of the signs of temporomandibular disorders (TMD). The well accepted theory of the mechanism for temporomandibular joint (TMJ) sounding is the internal derangement typically characterized by disc displacement. However, according to literature, there are approximately one third of asymptomatic joints in population had disc displacement, and, on the other hand, there are one fourth of TMJ sounding patients had not signs or very limited signs of disc displacement. Replacing the displaced disc to the normal position via methods like surgical operation did not achieve satisfactory long-term outcomes. In this review, we discuss and analyze the possible remodeling of the joint disc displacement diagnosed with imaging based on the anatomy and pathophysiology.颞下颌关节弹响是颞下颌关节紊乱病发生率最高的症状，其传播最广泛的病理机制学说是关节盘移位。据文献报道，约1/3的无症状者存在不同程度的关节盘移位，而约1/4的颞下颌关节弹响者关节盘位置基本正常或仅有轻微移位；用手术等方法将关节盘重置于"正确位置"的远期疗效并不理想。本文从解剖学与病理生理学角度，就依据影像学诊断的"关节盘移位"中可能存在的组织改建问题进行讨论和分析。.