Investigation on the traces of mandibular movement with severe tooth wear
- VernacularTitle:牙齿重度磨耗患者下颌运动轨迹的研究
- Author:
Bijie HAN
;
Xiaoqing LI
;
Ya WANG
- Publication Type:Journal Article
- Keywords:
Severe tooth wear;
Trace of mandibular movement;
Stomatognathic system
- From:
Journal of Practical Stomatology
1995;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the mandibular movement characteristics of subjects with severe tooth wear (TW).Methods:30 TW patients (24 men, 6 women, mean age 51 years) were served as TW group and 10 subjects with individual normal occlusion were served as control group (7 men, 3 women, mean age 40.5 years). All cases were examined by means of K6-1 Evaluation System manufactured by Myotronics US. The traces of the mandibular opening-closing movement and border movement were recorded.Results:During the movement from mandible posture position(MPP) to intercuspal position(ICP), the TW patients showed unstable characteristic. The velocity showed no significant difference between the two groups during opening and closing, but the congruence and smoothness of traces during the mandibular opening-closing and border movements in the TW patients were a little worse than the controls; and the TW patients had less mandibular movement index(MMI) than the controls(P
