不同垂直距离下肌力闭合道终点位与正中关系位的关系  

Relationship of the terminal position of the muscular contraction path and centric relation position in different vertical dimension

作　　者：刘建彰[1] 徐军[1] 

机构地区：[1]北京大学口腔医学院.口腔医院修复科,北京100081

出　　处：《北京大学学报（医学版）》2010年第1期56-59,共4页Journal of Peking University:Health Sciences

基　　金："十一五"国家科技支撑计划(2007BAI18B05)资助~~

摘　　要：目的:研究不同垂直距离下肌力闭合道终点位相对于正中关系位的位置分布关系。方法:采用哥特式弓描记装置测量10例无偏侧咀嚼的牙列缺失患者不同垂直距离下肌力闭合道终点位与正中关系位在平面上的位置关系。结果:随垂直距离的增加,10例牙列缺失患者肌力闭合道终点中心与正中关系位前后向距离增加;肌力闭合道终点的中心与正中关系位左右向距离以及肌力闭合道终点分布范围的前后径、左右径均未见与垂直距离明显相关。肌力闭合道终点分布区域中心位于正中关系位前方1～4 mm,左右偏移(0.42±0.47)mm,分布于前后径(1.36±0.58)mm、左右径(1.56±0.62)mm的散在区域。结论:随着垂直距离的增加,肌力闭合道终点位相对正中关系位向前方偏移,但左右向偏移程度及分布范围未随垂直距离变化而变化。Objective： To investigate the relationship of the terminal position of the muscular contraction path and centric relation position with different vertical dimension.Methods： The terminal position of the muscular contraction path and centric relation position with different vertical dimension were recorded for ten edentulous patients with gothic arch.Results： The mesial distance between the terminal position of the muscular contraction path and centric relation position increased with the vertical dimension.The lateral dimension between the terminal position of the muscular contraction path and centric relation position,the distribution of the terminal position of the muscular contraction path are not correlated to the vertical dimension.The center of the terminal position of the muscular contraction path is 1-4 mm ahead of the centric relation position and（0.42±0.47） mm lateral to the centric relation position.The distribution of the terminal position of the muscular contraction path is（1.36±0.58） mm in the mesial-distal direction,（1.56±0.62） mm in the lateral direction.Conclusion： With the increase of the vertical dimension,the mesial distance between the terminal position of the muscular contraction path and centric relation position increased.

关 键 词：牙(牙合) 垂直距离 正中关系 肌力闭合道终点位 

分 类 号：R783.6[医药卫生—口腔医学]