自主后退法和双手引导法确定下颌后退接触位切点位移的比较研究

发布时间：2018-06-13 23:38

本文选题：正中关系 + 下颌骨　；参考：《北京大学学报(医学版)》2014年01期

【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(P0.05)。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。
[Abstract]:Objective: To compare the relationship between the cut point displacement of the mandibular back contact position determined by the two hands guidance and the self regressive method. Methods: 12 young healthy subjects were selected to determine the median relationship by the self regressive method and the two hand guidance method, and the trajectory of the tangent point was recorded by the mandibular track recorder, and the dislocation from the tooth tip to the back contact was observed. The distance between the two methods and the distance between the cutting points of the back contact position and the point of the tooth tip is measured by the two methods. Results: there is a slight deviation in the projection of the tangent trajectory of the tangent points obtained by the 1 subjects through the two methods. The cutting point of the other 11 subjects is straight line direction. After the self-directed regression method, the total displacement of the cut point of the two hands is (1.15 + 0.64) mm and (0.98 + 0.29) mm respectively. There is no significant difference in the displacement between the cut points of the back contact position and the intersection point of the tooth tip (P0.05). Conclusion: the cut point of the back contact position and the tooth tip determined by the self retreating method and the two hands guidance method are determined by the two methods. The displacements between the intersection points are basically the same.
【作者单位】：北京大学口腔医学院·口腔医院口腔修复科;北京市海淀区妇幼保健院口腔科;
【分类号】：R783

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