目的 对辽宁地区骨性Ⅰ类女性下颌骨几何进行三维CT重建技术(3DCT)，并利用欧几里得距离矩阵分析(EDMA)进行形态的不对称性分析，对口腔正畸方案的设计及法医牙科鉴定方向提供重要的形态学基础资料。方法 选取2020年7月至2021年7月沈阳市表型组学研究重点实验室影像数据库中的50名辽宁地区骨性Ⅰ类女性进行3D头部CT进行回顾性分析，将数据录入VG Studio 3。2 MAX进行下颌骨三维重建并测量标志点三维坐标，使用winEDMA Version 1。0。1软件对左右侧下颌骨标志点进行不对称性分析。结果 用bootstrap非参数统计检验法分析结果显示，t=1。164、P=0。001。25个形状差异矩阵比值中小于0。95的有5个(20％);＞1。05的有0个。辽宁地区骨性Ⅰ类女性下颌骨左右形状差异有统计学意义。结论 辽宁地区骨性Ⅰ类女性下颌骨具有不对称性且右侧偏大。
Study on asymmetry of mandibular bone in class Ⅰ bone type women in Liaoning region based on three-dimensional CT reconstruction
Objective To provide important morphological basic data for the design of orthodontics and the direction of forensic dentistry identification,three-dimensional CT reconstruction technology(3DCT)was applied to the mandibular bone in class Ⅰ bone type women in Liaoning province,and the morphological a-symmetry was analyzed by Euclidean distance matrix analysis(EDMA).Methods A total of 50 class Ⅰ bone type women from the image database of Shenyang Key Laboratory of Phenomics Research in the period of July 2020 to July 2021 in Liaoning region were retrospectively selected for 3D head CT.The data were recorded in-to VG Studio 3.2 MAX for 3D reconstruction of mandible and measurement of 3D coordinates of marker points,and the asymmetry of left and right mandibular marker points was analyzed by winEDMA Version 1.0.1 software.Results Bootstrap nonparametric statistical test showed that t=1.164 and P=0.001.A-mong the 25 FDM ratios,5(20％)were less than 0.95,and there were 0 more than 1.05.There was significant difference in the left and right mandibular shape of Liaoning region class Ⅰ bone type women.Conclusion The mandible of Liaoning region class Ⅰ bone type women is asymmetrical and the right side is larger.
万方数据
维普
