Sweet D J, Bastien R B
Faculty of Dentistry, University of British Columbia, Vancouver, Canada.
J Forensic Sci. 1991 Sep;36(5):1565-71.
Valuable forensic information can be obtained from analysis of human bite mark injuries after careful retrieval of such evidence from living or deceased victims. It is difficult, however, to maintain the anatomical configuration of the skin, especially where body contours complicate the recovery process. Transillumination of the injury pattern in the skin after removal and preservation of the tissue from a deceased victim can provide significant information in the investigation process. A dimensionally stable matrix is required to support the skin's anatomical configuration during and after its removal. The authors have developed a unique and convenient method of heating and contouring a ring of acrylonitrile-butadiene-styrene (ABS) plastic using table salt over a heat source. When this ring is applied to the deceased victim's skin, and a backing material is added for support, removal of the skin and the bite mark can be accomplished more predictably while maintaining the anatomical contour. It is important to record bite marks accurately as soon after discovery as possible; the authors believe that this technique will significantly aid recovery of such evidence either at the crime scene or in the laboratory. A method of inscribing appropriate anatomical markers and case numbers on the rings is also described.
通过从活体或已故受害者身上仔细获取此类证据，对人类咬痕损伤进行分析可获得有价值的法医信息。然而，保持皮肤的解剖结构很困难，尤其是在身体轮廓使恢复过程变得复杂的情况下。从已故受害者身上取下并保存组织后，对皮肤损伤图案进行透照可为调查过程提供重要信息。在取下皮肤及其前后，需要一个尺寸稳定的基质来支撑皮肤的解剖结构。作者开发了一种独特且便捷的方法，利用盐在热源上加热并塑造丙烯腈 - 丁二烯 - 苯乙烯（ABS）塑料环的轮廓。当将此环应用于已故受害者的皮肤上，并添加支撑背衬材料时，去除皮肤和咬痕可以在保持解剖轮廓的同时更可预测地完成。在发现咬痕后尽快准确记录非常重要；作者认为该技术将极大地有助于在犯罪现场或实验室获取此类证据。本文还描述了一种在环上标记适当解剖标记和案件编号的方法。
