偏侧咀嚼对张闭口运动的影响  

Effects of Unilateral Chewing on Mandibular Movement during Mouth Opening and Closing

作　　者：贾玲[1] 王云[1] 汪萌芽[2] 

机构地区：[1]皖南医学院口腔医学院,安徽芜湖241002 [2]皖南医学院细胞电生理研究室

出　　处：《口腔医学研究》2015年第9期887-889,893,共4页Journal of Oral Science Research

基　　金：国家自然科学基金(编号:31271155);芜湖市科技计划项目(编号:2012cxy16)

摘　　要：目的:分析偏侧咀嚼患者在最大张闭口运动中的下颌运动轨迹特征。方法:通过下颌运动轨迹描记检测技术,比较偏侧咀嚼和正常咀嚼人群在大张口运动中的运动轨迹,进行统计分析。结果:1)偏侧咀嚼组在大张口运动时开闭口轨迹多数分离,开口型与与双侧咀嚼组相比差异有统计学意义(P<0.05)。2)偏侧咀嚼组张闭口运动时垂直向和矢状向位移显著低于双侧咀嚼组(P<0.01)。结论:最大张闭口运动中偏侧咀嚼组开口型多数偏向工作侧,50%的人群开闭口轨迹分离,开口度减小,说明长期偏侧咀嚼会导致张闭口运动轨迹的异常。Objective.. To analyse the features of mandibular movement trace in patients with unilateral chewing. Methods; During the maximum mouth opening and closing movement, the trace of mandibular incisor point was recorded both in the bilateral chewing group and unilateral chewing group. Data collected were used for statistical analysis. Results.. 1）The jaw tangent point trace was separate in unilateral chewing group. There was statistical significance for the opening type between bilateral chewing group and unilateral chewing group （P〈0.05）. 2） The vertical and sagittal displacements in the unilateral chewing group were significantly lower than those in bilateral chewing group （P〈0.01）. Conclusion.. Patients with unilateral chewing would deflect mandible to the working side during maximal mouth opening and closing. 50% of them exhibited a separated jaw tangent point trace and limited mouth opening. Unilateral chewing might lead to abnormity of mandibular movement trace.

关 键 词：偏侧咀嚼 张闭口运动 下颌切点运动轨迹 

分 类 号：R782.6[医药卫生—口腔医学]