咬合垂直距离减低的无牙颌TMD患者髁状突位置的变化

目的:探讨咬合垂直距离改变对无牙颌颞下颌关节功能紊乱综合征(TMD)患者两侧颞颌关节髁状突位置的影响.方法:对无牙颌TMD垂直距离减低的48例患者恢复垂直距离前后,测量关节间隙.结果:旧全口义齿正中咬合位时,左侧髁状突前间隙左侧小于右侧,后间隙左侧大于右侧(左前1.60mm,右前2.34mm.左后2.80mm,右后1.96mm),差异有显著性.新旧全口义齿正中咬合时相比较,左侧后,右侧前后间隙的改变为新全口义齿小于旧全口义齿(左后2.32mm,2.82mm;右前1.98mm,2.34mm),具有显著性差异,左侧前,右侧后间隙新义齿大于旧义齿(左前2.02mm,1.60mm,右后2.34mm,1.96mm),具有极显著性差异.结论:恢复无牙颌咬合垂直距离后可以使两侧髁状突位置对称,从而可以治疗无牙颌TMD.

Study on edentulous TMD patients with decreased vertical dimension

Objective:To observe the effect of condylar position before and after vertical dimension restoration of complete denture in edentulous TMD patients.Methods:Schuller's positional radiographs were made of all 48 patients in 3 groups.Joint spaces between the glenoid fossa were measured on the centric occlusion.Results:Before recover occlusal vertical dimension there was an obvious difference in anterior and posterior spaces(1.60mm,2.34mm;2.80mm,1.96mm).After recover occlusal vertical dimension on centric occlusion there was an obvious difference in left posterior and right anterior spaces(2.32mm,2.82mm;1.98mm,2.34mm),and significant difference in left anterior and right posterior spaces(2.02mm,1.60mm,2.34mm,1.96mm).Conclusion:The TMD can be caused by the change of vertical dimension in edentulous patients.