EXPLORING BITE MARKS ON DIFFERENT TYPES OF SKIN TONES

U. Deshpande, S. Mânica
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引用次数: 1

Abstract

The analysis of bite marks is the most challenging and convoluted part of Forensic Odontology. Various interrelated factors such as location of the bite and skin elasticity complicate the bite mark analysis. The relationship between the bite mark and the biochemical properties of skin has been well-documented but there is need to consider the variety of skin tones as a factor to explore. The aim of this pilot study was to analyse the appearance of bite marks on 5 different types of skin tones of 15 subjects (6 males and 9 females) from 11 nationalities and age ranged from 21 to 46 years. A pair of 3D printed dental cast was transferred onto a mechanical apparatus for production of experimental bitemarks by using 12.5 kg of weight. Common imaging modalities including conventional, infrared and ultraviolet light were used to record the bite mark images for following visual assessment. The different skin tones were categorized using Fitzpatrick scale and a colour chart was used to compare the changes on skin after 15 minutes of bite registration. According to the results, the force was well tolerated by the subjects producing a well-defined bite mark, although males showed a less prominent mark than females irrespective of the skin tone and nationality. Neither bruises nor significant changes in the colour of bite mark could be appreciated among the subjects. The different types of skin tones did not affect the registration of bite mark applying a force of 122.5.N for 15 seconds in this sample.
探索不同肤色的咬痕
咬痕的分析是法医牙科学中最具挑战性和最复杂的部分。咬痕的位置、皮肤弹性等因素使咬痕分析复杂化。咬痕与皮肤生化特性之间的关系已被充分证明,但需要考虑肤色的多样性作为一个因素来探索。本初步研究的目的是分析来自11个国家、年龄从21岁到46岁的15名受试者(6名男性和9名女性)5种不同肤色的咬痕外观。使用12.5公斤的重量将一对3D打印的牙模转移到机械设备上,用于生产实验性咬痕。常用的成像方式包括常规、红外线和紫外线,记录咬痕图像,用于后续的视觉评估。使用菲茨帕特里克量表对不同肤色进行分类,并使用颜色表比较咬痕记录15分钟后皮肤的变化。结果显示,受试者很好地耐受了这种力,并留下了清晰的咬痕,尽管与肤色和国籍无关,男性的咬痕没有女性那么明显。在受试者中既没有瘀伤也没有明显的咬痕颜色变化。使用122.5的力时,不同肤色对咬痕的记录没有影响。在这个例子中N持续15秒。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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