北京大学学报(医学版) ›› 2014, Vol. 46 ›› Issue (1): 67-70.

• 论著 • 上一篇    下一篇

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

张磊1,李云霞2,康艳凤1,杨广聚1,谢秋菲1△   

  1. (1. 北京大学口腔医学院·口腔医院口腔修复科,北京100081; 2. 北京市海淀区妇幼保健院口腔科,北京100080)
  • 出版日期:2014-02-18 发布日期:2014-02-18

Comparison of self-controlled retruded approach and bimanual manipulation method on the relationship of incisal point  displacement in the mandibular retruded contact position

ZHANG Lei1, LI Yun-xia2, KANG Yan-feng1, YANG Guang-ju1, XIE Qiu-fei1△   

  1. (1. Department of Prosthodontics, Peking University Hospital and School of Stomatology , Beijing 100081, China; 2. Department of Stomatology, Beijing Haidian Maternal and Child Health Hospital, Beijing 100080, China)
  • Online:2014-02-18 Published:2014-02-18

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。

关键词: 正中关系, 下颌骨, 切点

Abstract: Objective:To evaluate the relationship of incisal point displacements in the mandibular retruded 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 incisal 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 approach and bimanual manipulation method are approximately the same.

Key words: Centric relation, Mandible, Incisal point

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