PDF(Pubmed)
Abstract：
UNASSIGNED: Recent research has explored volumetric assessment in three-dimensional (3D) imaging procedures for sexual dimorphism. The 3D techniques have enabled a more realistic, accurate, and non-invasive visualization of sex-related anatomical parameters, such as the size and shape of human teeth.
UNASSIGNED: To perform sexual dimorphism based on dental tissue volumes of permanent left maxillary and mandibular canines in a Malaysian population.
UNASSIGNED: A cross-sectional study was carried out on 220 post-mortem computed tomography (PMCT) scans of Malaysian subjects (114 males and 106 females) aged between 18 and 40 years old. The permanent left maxillary and mandibular canines were analysed based on the volume of their (I) enamel cap, (II) coronal dentine, and (III) root, as well as the combination between the three dental tissue volumes (DTV). 3D Slicer version 4.10.2 computer software was used to perform a semi-automated segmentation of the anatomic regions of interest of each tooth.
UNASSIGNED: The DTV of the permanent left maxillary and mandibular canines showed sexual dimorphism as the males presented larger DTV than females (p < 0.05). After binary logistic regression, the DTV revealed an overall sex classification rate of 60 to 74.1%. The DTV of the permanent left mandibular canine had more discriminant power to correctly classify males and females compared to the left maxillary canine.
UNASSIGNED: The volumetric assessment of the dental tissues of the permanent left maxillary and mandibular canines could discriminate sex in the Malaysian population. Given the limited classification rate, this approach could act solely as a supplementary tool to existing sex estimation methods.
UNASSIGNED: To perform sexual dimorphism based on dental tissue volumes of permanent left maxillary and mandibular canines in a Malaysian population.
UNASSIGNED: A cross-sectional study was carried out on 220 post-mortem computed tomography (PMCT) scans of Malaysian subjects (114 males and 106 females) aged between 18 and 40 years old. The permanent left maxillary and mandibular canines were analysed based on the volume of their (I) enamel cap, (II) coronal dentine, and (III) root, as well as the combination between the three dental tissue volumes (DTV). 3D Slicer version 4.10.2 computer software was used to perform a semi-automated segmentation of the anatomic regions of interest of each tooth.
UNASSIGNED: The DTV of the permanent left maxillary and mandibular canines showed sexual dimorphism as the males presented larger DTV than females (p < 0.05). After binary logistic regression, the DTV revealed an overall sex classification rate of 60 to 74.1%. The DTV of the permanent left mandibular canine had more discriminant power to correctly classify males and females compared to the left maxillary canine.
UNASSIGNED: The volumetric assessment of the dental tissues of the permanent left maxillary and mandibular canines could discriminate sex in the Malaysian population. Given the limited classification rate, this approach could act solely as a supplementary tool to existing sex estimation methods.
摘要：
■最近的研究已经探索了三维（3D）成像程序中的性二态性的体积评估。3D技术使一个更真实的，准确,以及性别相关解剖参数的非侵入性可视化，例如人类牙齿的大小和形状。
■根据马来西亚人群中永久性左上颌和下颌犬齿的牙齿组织体积进行性二态性。
■对年龄在18至40岁之间的马来西亚受试者（114名男性和106名女性）的220次验尸计算机断层扫描（PMCT）扫描进行了横断面研究。根据（I）搪瓷帽的体积分析了永久性左上颌和下颌犬齿，(II)冠状牙本质，和（III）根，以及三个牙齿组织体积（DTV）之间的组合。使用3D切片器版本4.10.2计算机软件对每颗牙齿的感兴趣的解剖区域进行半自动分割。
■永久性左上颌和下颌犬的DTV表现出性二态性，因为男性的DTV比女性大（p<0.05）。经过二元逻辑回归，DTV显示总体性别分类率为60％至74.1％。与左上颌犬相比，永久性左下颌犬的DTV具有更多的判别能力来正确分类男性和女性。
■对永久性左上颌和下颌犬牙组织的体积评估可以区分马来西亚人群的性别。鉴于分类率有限，这种方法只能作为现有性别估计方法的补充工具。
■根据马来西亚人群中永久性左上颌和下颌犬齿的牙齿组织体积进行性二态性。
■对年龄在18至40岁之间的马来西亚受试者（114名男性和106名女性）的220次验尸计算机断层扫描（PMCT）扫描进行了横断面研究。根据（I）搪瓷帽的体积分析了永久性左上颌和下颌犬齿，(II)冠状牙本质，和（III）根，以及三个牙齿组织体积（DTV）之间的组合。使用3D切片器版本4.10.2计算机软件对每颗牙齿的感兴趣的解剖区域进行半自动分割。
■永久性左上颌和下颌犬的DTV表现出性二态性，因为男性的DTV比女性大（p<0.05）。经过二元逻辑回归，DTV显示总体性别分类率为60％至74.1％。与左上颌犬相比，永久性左下颌犬的DTV具有更多的判别能力来正确分类男性和女性。
■对永久性左上颌和下颌犬牙组织的体积评估可以区分马来西亚人群的性别。鉴于分类率有限，这种方法只能作为现有性别估计方法的补充工具。
