基于EDMA的辽宁汉族成人不同垂直骨面型3DCT几何形态测量

发布时间：2019-03-26 10:51

【摘要】：目的本研究通过CT对不同垂直骨面型辽宁汉族成人颅骨形态进行三维重建,测量颅骨特征点的三维坐标。利用EDMA分析将特征点三维坐标数据转化为硬组织FM,分析不同垂直骨面型硬组织FM差异性,为不同垂直骨面型人群制定个体化正畸治疗计划及相关部位手术方案设计提供参考。方法按一定纳入标准选取实验室通过CT三维容积扫描获取的106例辽宁汉族成人受试者颅面数据(低角29例,均角47例,高角30例)。利用VG Studio MAX 2.2软件对CT图像数据进行处理,重建三维颅骨并测量17个面中部特征点及13个下颌骨特征点的三维坐标。通过Win EDMA1.0.1软件利用bootstrap非参数检验对不同垂直骨面型成人的面中部骨骼及下颌骨进行形态差异性分析。结果1、辽宁汉族不同垂直骨面型成人面中部形态差异显示:高角组比均角组非参数bootstrap检验为T=1.867,P=0.005;低角组比均角组非参数bootstrap检验为T=1.658,P=0.034;高角组比低角组非参数bootstrap检验为T=2.278,P=0.001。表明辽宁汉族不同垂直骨面型成人面中部形态差异显著。2、辽宁汉族不同垂直骨面型成人下颌骨形态差异显示:高角组比均角组非参数bootstrap检验为T=1.398,P=0.035;低角组比均角组非参数bootstrap检验为T=1.443,P=0.029;高角组比低角组非参数bootstrap检验为T=1.826,P=0.001;表明辽宁汉族不同垂直骨面型成人下颌骨形态差异显著。结论1.辽宁汉族成人不同垂直骨面型颅面形态具有显著性差异;2.不同垂直骨面型人群面中部有差异:按照高角到低角的顺序垂直方向逐渐变高而水平方向逐渐变窄,颧突点和颧点相对于颅骨中线的距离逐渐变大;不同垂直骨面型人群眼眶下缘位置具有差异性。3.不同垂直骨面型人群下颌骨按照高角到低角的顺序:下颌升支逐渐变长变宽,水平部逐渐变低;下颌骨升支的相对位置具有差异性;高角组与均角组相比髁突与喙突开张角度较大。
[Abstract]:Aim to study the three-dimensional reconstruction of adult skulls of Liaoning Han nationality with different vertical bone surface types by CT, and measure the three-dimensional coordinates of skull characteristic points. EDMA analysis was used to transform the 3D coordinate data of feature points into hard tissue FM, analysis to analyze the difference of FM in different vertical bone surface types, which provided reference for making individualized orthodontic treatment plan and the design of operation plan for different vertical bone surface type population. Methods the craniofacial data (29 cases of low angle, 47 cases of mean angle and 30 cases of high angle) obtained by CT three-dimensional volume scanning in Liaoning Han population were selected according to certain inclusion criteria. The CT image data were processed by VG Studio MAX 2.2.The three-dimensional skull was reconstructed and the three-dimensional coordinates of 17 feature points in the middle of the face and 13 feature points in the mandible were measured. The morphological differences of middle facial bone and mandible of adults with different vertical bone surface types were analyzed by bootstrap nonparametric test with Win EDMA1.0.1 software. Results 1. The difference of middle facial morphology of adults with different vertical bone surface types in Liaoning Han nationality showed that the non-parametric bootstrap test of high-angle group was 1.867, P = 0.005.The non-parametric bootstrap test of low-angle group was 1.658, P = 0.034, and that of low-angle group was 1.658, P = 0.034, and that of low-angle group was 1.658 and 0.034, respectively. The non-parametric bootstrap test of high-angle group than low-angle group is T = 2.278, P = 0.001. The results showed that there were significant differences in the middle facial morphology of adult adults with different vertical bone surface types in Liaoning Han nationality. 2. The difference of mandible morphology among adults with different vertical bone surface types in Liaoning Han nationality showed that the non-parametric bootstrap test of high-angle group was 1. 398, P = 0. 035; The non-parametric bootstrap test of low-angle group was 1. 443, P < 0. 029, and that of high-angle group was 1. 826, P = 0. 001, which indicated that there was a significant difference in the shape of mandible between Liaoning Han nationality and low-angle group (P < 0. 029), which indicated that there was a significant difference in mandible shape between Liaoning Han nationality and low-angle group. Conclusion 1. There was a significant difference in the craniofacial morphology of different vertical bony facial types in Liaoning Han adults. 2. According to the order of high angle to low angle, the vertical direction gradually increased and the horizontal direction gradually narrowed, and the distance between zygomatic protrusion point and zygomatic point relative to the middle line of skull became larger. There is a difference in the location of the lower orbital margin among different vertical bone surface types. 3. According to the order of high angle to low angle, the mandibular ascending branch became longer and wider, and the horizontal part gradually decreased, the relative position of mandibular ascending branch was different, the position of mandibular ascending branch was different from that of low angle, and the position of mandibular ascending branch was different from high angle to low angle. The angle of condyle and coracoid process was larger in the high angle group than that in the mean angle group.
【学位授予单位】：锦州医科大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：R783.5

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