下颌骨自动旋转中心与上颌骨上抬量的相关性研究

发布时间：2018-11-12 18:23

【摘要】：目的:探讨Le Fort I型截骨术上抬上颌骨时下颌骨自动旋转中心的位置,下颌骨自动旋转中心与上颌骨上抬量、下颌骨长度和下颌平面角的关系。方法:选取25例单纯采用Le Fort I型截骨术上抬上颌骨矫治垂直向发育过度的患者,测量其术前、术后头颅定位侧位片。利用Reuleaux法测量实际下颌骨旋转中心。采用SPSS13.0软件包对ANS、PNS上抬量、下颌骨长度、MP-SN角度与下颌骨自动旋转中心进行Pearson相关和线性回归分析。结果:下颌骨自动旋转中心平均位于髁突中点下方15.64 mm,后方0.82 mm处。ANS点和PNS点上抬量、下颌骨长度与下颌骨自动旋转中心位置相关,MP-SN角度与下颌骨旋转中心垂直向位置相关。结论:下颌骨自动旋转中心位于髁突外,其与上颌骨上抬量、下颌骨长度和下颌平面角相关。
[Abstract]:Objective: to study the position of the mandibular autorotation center, the relationship between the mandibular autorotation center and the amount of maxillary lifting, the length of mandible and the angle of mandible plane during Le Fort I osteotomy. Methods: 25 patients with vertical overgrowth were treated by Le Fort I osteotomy. The lateral radiographs of cranial location were measured before and after operation. The rotation center of the actual mandible was measured by Reuleaux method. The Pearson correlation and linear regression analysis were performed between ANS,PNS lifting, mandibular length, MP-SN angle and autorotation center of mandible by SPSS13.0 software package. Results: the mean autorotation center of the mandible was located below the midpoint of the condyle at 0.82 mm below the midpoint of the condylar process. The ANS and PNS points were lifted up, and the length of the mandible was correlated with the position of the autorotational center of the mandible. The MP-SN angle was correlated with the vertical position of the mandibular rotation center. Conclusion: the autorotation center of the mandible is located outside the condyle, which is related to the amount of maxillary lifting, the length of the mandible and the angle of the mandible plane.
【作者单位】：上海市浦东新区浦南医院口腔科;上海交通大学医学院附属第九人民医院·口腔医学院口腔颅颌面科上海市口腔医学重点实验室;浙江大学医学院附属第二医院口腔科;
【基金】：浦东新区科技发展基金创新资金(PKJ2011-Y14) 浦东新区卫生系统优秀青年医学人才培养基金(PWRq2010-12)~~
【分类号】：R782.2

【相似文献】