使用体视显微镜对三个物种的牙釉质形态进行体外分析。

In Vitro Analysis of Enamel Patterns Across Three Species Using Stereomicroscopy.

作者信息

Senthilkumar Akshai, Ramadoss Ramya, Ramalingam Karthikeyan, Arthanari Abirami

机构信息

Forensic Odontology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND.

Oral Pathology and Oral Biology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND.

出版信息

Cureus. 2024 May 1;16(5):e59488. doi: 10.7759/cureus.59488. eCollection 2024 May.

Abstract

Background Dental enamel, the outermost layer of the tooth, stands as a unique and remarkable tissue that plays a crucial role in safeguarding teeth against various external factors. The examination and analysis of enamel rod end patterns on tooth surfaces, referred to as ameloglyphics, offer a promising avenue for dental identification and forensic investigations in forensic medicine, thereby enhancing the precision and reliability of forensic analyses. This paper aims to evaluate and compare the ameloglyphics of different species under a stereomicroscope. The species examined in this study include the beaver (genus ), fox (genus ), and human (). Methods Teeth samples from each species (n = 3) were gathered from the tooth repository and examined under a stereomicroscope at various magnifications, both with and without graphite staining. Photographs were captured, and the enamel patterns were meticulously evaluated. Through the utilization of plot profiles, the enamel patterns of the different species were compared, and any discernible differences between them were carefully noted. Results The plot profiles of the three species were analyzed, revealing distinct characteristics. Specifically, it was observed that the plots of the genus teeth and teeth exhibited dispersed arrangements, whereas the plot profile of the genus displayed a closely arranged pattern. Conclusions Within the confines of the current investigation, it can be inferred that every mammal exhibits a distinct and exclusive arrangement of enamel rods. Hence, the task of identifying a deceased individual through dental imprints may pose difficulties if the structural characteristics are not thoroughly comprehended.

摘要

背景 牙釉质作为牙齿的最外层,是一种独特且非凡的组织,在保护牙齿免受各种外部因素影响方面发挥着关键作用。对牙齿表面釉柱末端模式(称为釉纹)的检查和分析,为法医学中的牙齿鉴定和法医调查提供了一条有前景的途径,从而提高了法医分析的准确性和可靠性。本文旨在在体视显微镜下评估和比较不同物种的釉纹。本研究中检查的物种包括海狸(属 )、狐狸(属 )和人类( )。方法 从牙齿库收集每个物种的牙齿样本(n = 3),并在体视显微镜下以不同放大倍数进行检查,包括有石墨染色和无石墨染色的情况。拍摄照片,并对釉质模式进行细致评估。通过利用绘图轮廓,比较不同物种的釉质模式,并仔细记录它们之间任何可辨别的差异。结果 对这三个物种的绘图轮廓进行了分析,揭示了不同的特征。具体而言,观察到 属牙齿和 属牙齿的绘图呈现分散排列,而 属的绘图轮廓则显示出紧密排列的模式。结论 在当前调查范围内,可以推断出每种哺乳动物都表现出独特且排他的釉柱排列。因此,如果不能充分理解结构特征,通过牙齿印记识别死者个体的任务可能会面临困难。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1ccf/11144051/22cb64c41b26/cureus-0016-00000059488-i01.jpg

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