基于CBCT成像的成人安氏Ⅲ类颅颌面骨性不对称分析

›› 2017, Vol. 37 ›› Issue (3): 233-236.

基于CBCT成像的成人安氏Ⅲ类颅颌面骨性不对称分析

刘翔,陈文静

江苏省口腔医院

收稿日期:2016-10-25 修回日期:2016-12-05 出版日期:2017-03-28 发布日期:2017-04-12
通讯作者: 刘翔 E-mail:530125076@qq.com

Skeletal and dental analysis of Class Ⅲ subdivision malocclusions using cone-beam computed tomography

Received:2016-10-25 Revised:2016-12-05 Online:2017-03-28 Published:2017-04-12

摘要/Abstract

摘要： ［摘要］目的使用锥体束CT（cone-beam computed tomography，CBCT）三维成像，在三维坐标系中研究安氏Ⅲ类骨性不对称的特征。方法使用CBCT采集41例成年人患者的颅面部数据，在Dolphin Imaging 11.0软件中建立三维坐标系，对对照组和试验组的骨性结构的标记点的坐标及不对称系数等进行统计分析。结果眶点、髁突定点、下颌角点的不对称系数呈现由上至下变大的趋势，颏下点的方差齐性检验有统计学差异，而眶点及前鼻嵴点的不对称系数在安氏Ⅰ类与安氏Ⅲ类的统计比较中，发现有显著差异（P<0.05）。安氏Ⅲ类患者的下颌骨比上颌骨不对称发生率明显上升。结论颅面部骨性结构的不对称率呈由上至下逐渐加重的趋势。安氏Ⅲ类患者的颅面部硬组织并没有显示相对于安氏Ⅰ类对照组的不对称发生率上升。

关键词: 锥体束CT, 面部不对称, 安氏III类

Abstract: 【Abstract】 Objective To analyze the skeletal and dental characters between subjects with Class III malocclusions and subjects with normal occlusions by using cone-beam computed tomography. Methods 21 subjects with Class III malocclusions and 20subjects with normal occlusions were assessed with cone-beam computed tomography scans. And the CT images were constructed into 3D model by using medical image processing software Dolphin Imaging 11.0.Anatomical landmarks were located and reference planes were established on the 3D model. The measurements were analyzed by SPSS 17.0. Results The extent of maxillofacial deformity increases from top to bottom in adults with facial asymmetry. Some measurements of Class III malocclusions were found to be different with normal occlusions including Asymmetry index of Orbitale ，Anterior nasal spine and Menton.Conclusions Based on this study, the discrepant jaw growth resulting in a Class III skeletal pattern results in no more skeletal asymmetry than Class I skeletal patterns.

Key words: cone-beam computed tomography, facial asymmetry, Class III malocclusions

中图分类号:

R783.5

刘翔陈文静. 基于CBCT成像的成人安氏Ⅲ类颅颌面骨性不对称分析[J]. , 2017, 37(3): 233-236.

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