【摘要】 目的:研究重度磨耗对下颌运动乃至口颌系统功能的影响。方法:选取实验组重度磨耗患者30例,对照组个别正常10例,用K6-1系统分别记录下颌叩齿、开闭口及边缘运动轨迹。结果:磨耗组中MPP-ICP不稳定的患者较对照组多(P<0.05);磨耗组下颌开闭口运动速率与对照组比较无统计学差异(P>0.05),但轨迹的平滑度及重复性较对照组差;磨耗组边缘运动轨迹的平滑性及对称性较对照组差,其MMI小于对照组(P<0.05)。结论:重度磨耗可影响下颌运动及功能,但对整个口颌系统健康的影响仍待进一步研究。更多还原

【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<0.05).Conclusion:Severe tooth wear might have some influences on the mandibular movement and function,but the affecting on the health of stomatognathology system needs further studied.更多还原