口腔医学研究

口腔医学研究 ›› 2021, Vol. 37 ›› Issue (3): 237-241.DOI: 10.13701/j.cnki.kqyxyj.2021.03.012

• 口腔正畸学研究 • 上一篇    下一篇

基于EDMA的辽宁汉族成年Bonwill三角的几何形态分析

殷雅楠1, 刘大华1, 许泽君1, 任甫2*   

  1. 1.锦州医科大学,锦州医科大学生物人类学研究所 辽宁 锦州 121000;
    2.沈阳医学院基础医学院 辽宁 沈阳 110000
  • 收稿日期:2020-08-17 发布日期:2021-03-19
  • 通讯作者: *任甫,E-mail:rf@symc.edu.cn
  • 作者简介:殷雅楠(1995~ ),女,山东淄博人,硕士在读,主要从事体质人类学及表型组学研究。

Geometric Morphology Analysis of Bonwill Triangle in Liaoning Han Nationality Adults Based on EDMA

YIN Yanan1, LIU Dahua1, XU Zejun1, REN Fu2*   

  1. 1. Biological Anthropology Institute of Jinzhou Medical University, Jinzhou 121000, China;
    2. Shenyang Medical College, Shenyang 110000, China
  • Received:2020-08-17 Published:2021-03-19

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摘要： 目的:对三维重建后的下颌Bonwill三角进行几何形态测量,分析Bonwill三角的不同垂直骨面型的差异。方法:对72例辽宁汉族成年人进行128层螺旋CT扫描;将CT数据导入Invivo 5.3中进行三维重建并对标志点进行三维坐标测量;使用WinEDMA1.0.1对三维标志点进行差异分析,分析结果采用bootstrap 非参数检验。结果:通过对各个垂直骨面型Bonwill三角的分析发现,辽宁汉族成人各个骨面型的Bonwill三角具有对称性(P＞0.05);不同垂直骨面型之间差异显著(P＜0.05)。结论:辽宁汉族成人的Bonwill三角大致具有对称性,但从不同垂直骨面形分析,从均角型到高角型再到低角型,辽宁汉族成人左侧脸的深度依次递减;从高角型到均角型再到低角型,辽宁汉族成人右侧脸的深度依次递减;从低角型到高角型再到均角型,辽宁汉族成人脸的下颌髁突间宽度依次递减。这对于不同地区垂直骨面型的颅面特征提供理论基础。

关键词: Bonwill三角, 几何形态测量学, 欧几里德距离矩阵分析法, 三维重建

Abstract: Objective: To measure the geometric shape of the Bonwill triangle of the mandible after 3D reconstruction and to analyze the differences of diverse vertical bone face shapes of the Bonwill triangle. Methods: The study involved the performance of 128-slice spiral CT scans on 72 Han adults in Liaoning and input these CT data into Invivo 5.3 for 3D reconstruction and 3D coordinate measurement of landmarks. WinEDMA 1.0.1 was used to analyze the differences between 3D landmarks. Bootstrap non-parametric test was used to analyze the result. Results: It was found that the Bonwill triangle of each bone face type of Liaoning Han adult had symmetry. However, the differences between each vertical bone face type were significant (P<0.05). The depth of the left faces of Liaoning Han adults decreased in the order of the average angle type to the high angle type, then to the low angle type. The depth of the right faces of the Liaoning Han adults decreased in the order of the high angle type to the average angle type, then to the low angle type. The widths of the mandibular condyles of Liaoning Han adults' faces decreased in the order of the low angle type to the high type, and then to the average angle type. Conclusion: The research provides a theoretical basis for the craniofacial features of vertical bone-face types in different regions.

Key words: Bonwill triangle, geometric morphometry, Euclidean distance matrix analysis, three-dimensional reconstruction