摘要
目的:通过对关节盘前后界限的测定,确定颞下颌关节紊乱病患者关节盘移位改变的情况,探讨其临床意义.材料与方法:16例经临床确诊为颞下颌关节紊乱病患者行颞下颌关节(TMJ)的核磁共振(MRI)检查与13例正常人的MRI影像进行对比分析.结果:T1图像矢状位时,在TMD组,关节盘前缘位于关节结节最低点垂直线前约0.43mm,而正常组则位于其前约0.13mm,两组间差异无统计学意义,闭口位时在TMD组关节盘后缘与双板区交界处约位于关节四中心垂直线81°处,而正常组则位于其93.31°处,两组间有统计学差异.结论:TMD组在闭口位时,关节盘均可有明显的前移,但前缘前移变化不大,这与关节盘形态改变状况一样均为颞下颌关节紊乱病的重要指征.
Objective: To determine the anterior and posterior border of articular disc and the disc displacement in TMD people and its clinical significance. Methods: The MR images of temporomandibular joints of 16 people with confirmed TMD were compared with those of 13 normal people. Results: T1 sagittal MR images showed that the anterior disc border in TMD people was sited around 0.43mm before the vertical line of the lower end of articular eminence, while it is sited 0. 13mm before the vertical line in normals. There was no significant difference between two groups. The junction of posterior band of the disc and the bilaminar region in TMD people was sited at 81° of vertical line of articular fossa center, but in normals it was 93.31° There exists significant statistical difference. Conclusions: The articular disc of TMD people at close mouth position can be obviously forward displaced, but its anterior border changed little, which is a significant characteristic of TMD as well as the change of articular disc morphology.
出处
《口腔颌面修复学杂志》
2000年第2期65-67,共3页
Chinese Journal of Prosthodontics
基金
国家自然科学基金资助
资助号:39100125
军队"九五"医药基金资助
资助号:96M138
