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头影测量分析和判别函数在南印度人和移民藏人中的性别鉴定。

Determination of sex in South Indians and immigrant Tibetans from cephalometric analysis and discriminant functions.

机构信息

Department of Oral Medicine and Radiology, SDM College of Dental Sciences & Hospital, Dharwad, Karnataka, India.

出版信息

Forensic Sci Int. 2010 Apr 15;197(1-3):122.e1-6. doi: 10.1016/j.forsciint.2009.12.052. Epub 2010 Jan 18.

Abstract

Skeletal components play significant role in sex determination in forensic and anthropological fields. Skull is considered second best, after pelvis, in determination of sex. Methods based on morphological characteristics and morphometry are already in use with reasonable accuracy. Standardized radiographic techniques like cephalometry have advantages of being more precise and objective when compared to morphologic methods. The present study aimed at obtaining and comparing the reliability of cranio-mandibular parameters in South Indian and Indian immigrant of Tibetan populations using lateral and postero-anterior (PA) cephalograms. A total of 11 cephalometric parameters were traced on lateral and PA cephalograms manually. Functions to aid in the sex determination were developed by subjecting the cephalometric parameters to discriminant analysis. Among the chosen parameters bizygomatic width, ramus height, depth of face contributed most for sexual dimorphism in both the populations. Upper facial height was the additional parameter for sexual dimorphism in immigrant Tibetan population. The discrimination accuracy in South Indian population was 81.5% while that of immigrant Tibetan population was 88.2%. With the current study it can be concluded that cephalometric cranio-mandibular parameters can be used to discriminate the sex using discriminant function analysis and similar cranio-mandibular parameters contribute to sex prediction across populations.

摘要

骨骼成分在法医学和人类学领域的性别确定中起着重要作用。在性别确定方面,颅骨被认为仅次于骨盆,是第二好的。基于形态特征和形态计量学的方法已经在使用,具有相当的准确性。与形态学方法相比,标准化的放射技术,如头颅测量法具有更精确和客观的优点。本研究旨在通过侧位和后前位(PA)头颅片获得并比较印度南部和印度藏族移民的颅颌参数的可靠性。总共手动追踪了侧位和 PA 头颅片上的 11 个头影测量参数。通过对这些头影测量参数进行判别分析,建立了辅助性别鉴定的函数。在所选择的参数中,双侧颧骨宽度、下颌支高度、面深对两个群体的性别二态性贡献最大。在上部面高是移民藏族群体性别二态性的附加参数。印度南部人群的判别准确率为 81.5%,而移民藏族人群的判别准确率为 88.2%。通过本研究可以得出结论,使用判别函数分析可以对头影测量的颅颌参数进行性别区分,相似的颅颌参数有助于跨人群进行性别预测。

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