Bush Mary A, Miller Raymond G, Bush Peter J, Dorion Robert B J
Laboratory for Forensic Odontology Research, School of Dental Medicine, SUNY at Buffalo, B1 Squire Hall, South Campus, Buffalo, NY 14214, USA.
J Forensic Sci. 2009 Jan;54(1):167-76. doi: 10.1111/j.1556-4029.2008.00908.x. Epub 2008 Nov 1.
In bitemark analysis, the forensic odontologist must consider how the biomechanical properties of the skin contribute to distortion of the bitemark. In addition, one must consider how the bitemark can be distorted by postural movement of the victim after the bite has occurred. A fundamental review of the architecture and biomechanical properties of the dermis is described and evaluated through bites made on cadavers. In order to assess distortion, 23 bites from a single characterized dentition were made on un-embalmed cadaver skin. Bite indentations were photographed. Following various body manipulations they were re-photographed in different positions. Hollow volume overlays of the biting dentition were constructed, and metric analysis of the dentition and all bitemarks was completed. The overall intercanine, mesial to distal, and angle of rotation distortion was calculated. Of the 23 bites made, none were measurably identical, and in some cases, dramatic distortion was noted.
在咬痕分析中，法医牙科学者必须考虑皮肤的生物力学特性如何导致咬痕变形。此外，还必须考虑在咬伤发生后，受害者的姿势移动会如何使咬痕变形。本文通过对尸体进行咬伤实验，描述并评估了真皮的结构和生物力学特性。为了评估变形情况，在未防腐处理的尸体皮肤上进行了来自单一特征牙列的23次咬伤。对咬痕压痕进行拍照。在对尸体进行各种身体操作后，在不同位置再次拍照。构建了咬合牙列的中空体积叠加图，并完成了牙列和所有咬痕的测量分析。计算了犬齿间、近中至远中以及旋转角度的整体变形情况。在进行的23次咬伤中，没有一次在测量上是完全相同的，在某些情况下，还观察到了显著的变形。
