对眶上区进行形态计量分析以确定性双态性:对巴西成人干头骨的研究。

National journal of maxillofacial surgery Pub Date : 2024-05-01 Epub Date: 2024-07-24 DOI:10.4103/njms.njms_145_22
Allana Muniz De Lima, Silvio Antônio Garbelotti Júnior, Rafael Verardi Serrano, Luiz Felipe Palma, Luís Otávio Carvalho De Moraes
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引用次数: 0

摘要

介绍:骨盆、长骨和头骨是性二型的良好指标。在头骨中,眶上部被认为是一个高度性别二态性的部位。因此,本研究旨在使用常规和几何形态测量法分析巴西成人干头骨的性别二态性:通过分析六种线性测量方法,对 179 个头骨进行了常规形态测量。在几何形态测量中,选择了 89 个头骨(右侧),并考虑了七个地标。然后进行了广义普氏分析、主成分分析和线性判别分析:结果:所有线性测量结果均显示男女之间存在差异。几何形态测量显示,77.05%的样本变化可由前三个主成分解释。此外,考虑到中心点的大小,两性在形状上存在差异。77.32%的头骨通过几何形态学正确地划分了性别,60.89%至73.74%的头骨通过传统形态学正确地划分了性别:根据分析,眶上区在巴西成人干头骨中呈现出明显的性别二态性。此外,传统形态测量法和几何形态测量法都能对其进行有效分析,但后者似乎更准确一些。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Morphometric analysis of the supraorbital region for sexual dimorphism: A study on Brazilian adult dry skulls.

Introduction: Pelvis, long bones, and skull are good indicators of sexual dimorphism. In the skull, the supraorbital region is considered a highly sexually dimorphic part. Thus, the present study aimed to analyze the sexual dimorphism of Brazilian adult dry skulls using conventional and geometric morphometry.

Materials and methods: Conventional morphometry was performed on 179 skulls, through the analysis of six linear measurements. For geometric morphometry, 89 skulls (right side) were selected and seven landmarks were considered. Generalized procrustes analysis, principal component analysis, and linear discriminant analysis were then carried out.

Results: All linear measurements presented differences between both sexes. Geometric morphometry showed that 77.05% of the sample variation could be explained by the first three principal components. Moreover, considering the centroid size, there was a difference in shape between the sexes. Geometric morphometry classified sex correctly in 77.32% of the skulls and conventional morphometry from 60.89% to 73.74%.

Conclusions: According to the analyses, the supraorbital region presents significant sexual dimorphism in Brazilian adult dry skulls. Moreover, it can be analyzed efficiently by both conventional and geometric morphometry, although the latter seems to be slightly more accurate.

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