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首页> 外文期刊>Forensic science international >Sex determination from the mandibular ramus flexure of Koreans by discrimination function analysis using three-dimensional mandible models
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Sex determination from the mandibular ramus flexure of Koreans by discrimination function analysis using three-dimensional mandible models

机译：使用三维下颌骨模型的判别函数分析从韩国下颌骨下颌弯曲中确定性别

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摘要

It has been known that mandible ramus flexure is an important morphologic trait for sex determination. However, it will be unavailable when mandible is incomplete or fragmented. Therefore, the anthropometric analysis on incomplete or fragmented mandible becomes more important. The aim of this study is to investigate the sex-discriminant potential of mandible ramus flexure on the Korean three-dimensional (3D) mandible models with anthropometric analysis. The sample consists of 240 three dimensional mandibular models obtained from Korean population (M:F; 120:120, mean age 46.2 y), collected by The Catholic Institute for Applied Anatomy, The Catholic University of Korea. Anthropometric information about 11 metric was taken with Mimics, anthropometry libraries toolkit. These parameters were subjected to different discriminant function analyses using SPSS 17.0. Univariate analyses showed that the resubstitution accuracies for sex determination range from 50.4 to 77.1%. Mandibular flexure upper border (MFUB), maximum ramus vertical height (MRVH), and upper ramus vertical height (URVH) expressed the greatest dimorphism, 72.1 to 77.1%. Bivariate analyses indicated that the combination of MFUB and MRVH hold even higher resubstitution accuracy of 81.7%. Furthermore, the direct and stepwise discriminant analyses with the variables on the upper ramus above flexure could predict sex in 83.3 and 85.0%, respectively. When all variables of mandibular ramus flexure were input in stepwise discriminant analysis, the resubstitution accuracy arrived as high as 88.8%. Therefore, we concluded that the upper ramus above flexure hold the larger potentials than the mandibular ramus flexure itself to predict sexes, and that the equations in bivariate and multivariate analysis from our study will be helpful for sex determination on Korean population in forensic science and law.
机译：已知下颌下颌弯曲是确定性别的重要形态特征。但是，当下颌不完整或碎片化时，它将不可用。因此，对下颌骨不完整或碎片进行人体测量分析变得更加重要。这项研究的目的是通过人体测量学研究韩国三维（3D）下颌骨模型上下颌骨下颌弯曲的性别区分潜力。该样本由韩国天主教大学应用解剖学天主教研究所收集的从韩国人群（男：女; 120：120，平均年龄46.2岁）获得的240个三维下颌模型组成。人体测量学信息库工具包Mimics获取了有关11度量标准的人体测量学信息。使用SPSS 17.0对这些参数进行了不同的判别函数分析。单因素分析表明，用于性别确定的重新计算准确性范围为50.4％至77.1％。下颌弯曲上边界（MFUB），最大横肌垂直高度（MRVH）和上横肌垂直高度（URVH）表现出最大的二态性，为72.1％至77.1％。双变量分析表明，MFUB和MRVH的组合具有更高的81.7％的重新取代精度。此外，直接和逐步判别分析使用弯曲上方上支的变量可以分别预测83.3％和85.0％的性别。在逐步判别分析中输入下颌下颌支弯曲的所有变量时，重新置换的准确性高达88.8％。因此，我们得出的结论是，弯曲上方的上支支具比下颌支支支具本身具有更大的预测性别的潜力，并且我们研究中的双变量和多变量分析方程将有助于法医学和法律上韩国人群的性别确定。 。

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