摘要
目的:比较双手引导法和自主后退法确定的下颌后退接触位切点位移的关系。方法:选择12名年轻健康受试者,分别以自主后退法和双手引导法确定正中关系位,通过下颌运动轨迹记录仪记录切点运动轨迹,观察从牙尖交错位到后退接触位切点运动轨迹在水平面投影的特点,测量两种方法获取的后退接触位切点与牙尖交错位切点之间的距离。结果:除1例受试者通过两种方法获取的切点运动轨迹在水平面的投影有轻度偏斜,其余11名受试者的切点运动轨迹均为直线向后。自主后退法、双手引导法切点总位移量分别为(1.15±0.64)mm和(0.98±0.29)mm,两种方法获得的后退接触位切点与牙尖交错位切点之间的位移量相比,差异没有统计学意义(P>0.05)。结论:自主后退法与双手引导法确定的后退接触位切点与牙尖交错位切点之间的位移基本一致。
Objective：To evaluate the relationship of incisal point displacements in the mandibular re- truded contact position （RCP） between the self-controlled retruded approach and bimanual manipulation method. Methods： Twelve healthy young volunteers were selected. The RCP was guided through the self-controlled retruded approach and bimanual manipulation method. The track of the incisal point was recorded, using the mandibular movement trace recording system. The movement direction of the incisaJ point in horizontal plane was observed. The distance between the incisal point of the RCP and intercuspal contact position （ICP） was measured. Results： Except one volunteer＇s incisal point movement direction of the RCP was oblique, others were straight toward posterior. The displacements of the incisal point from the ICP to RCP guided through self-controlled approach and bimanual manipulation method were （ 1.15 ± 0.64） mm, （0.98 ± 0.29 ） mm respectively. There was no statistical significance between the two methods （P 〉 0.05 ）. Conclusion： The displacements of the incisal point from the ICP to RCP guided through self-controlled annroach and bimanual maninulation method Are annmximatelv the snmo
出处
《北京大学学报（医学版）》
CAS
CSCD
北大核心
2014年第1期67-70,共4页
Journal of Peking University:Health Sciences
关键词
正中关系
下颌骨
切点
Centric relation
Mandible
Incisal point
