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高温暴露后牙证据的保存。

Preservation of dental evidence following exposure to high temperatures.

机构信息

Victorian Institute of Forensic Medicine and the Department of Forensic Medicine, Monash University, 57-83 Kavanagh Street, Southbank, Vic. 3006, Australia.

出版信息

Forensic Sci Int. 2011 Feb 25;205(1-3):40-3. doi: 10.1016/j.forsciint.2010.08.011. Epub 2010 Sep 18.

Abstract

The success of the Disaster Victim Identification (DVI) process relies upon sufficient post-mortem data being recovered to allow for a meaningful comparison with ante-mortem records of the missing person. Human bodies subjected to prolonged high temperatures, as experienced during the Black Saturday bushfires in Victoria, are often reduced to fragile skeletal elements. The dental structures, however, are the most durable tissues of the body and often survive these prolonged high temperatures. Without protecting the fragile remains at the scene and during transportation to the mortuary, disruption of the skeletal and dental elements may occur. This disruption will result in difficulties in obtaining post-mortem evidence and lead to problems during the reconciliation (formal identification) phase of the investigation. In the two case reports presented to illustrate these problems, there was significant loss and degradation of dental structures at the scene and during transportation to the mortuary. In the first case described, where no protection was afforded to the remains, total loss of all anatomical dental structures occurred. In the second case, where protection of the structures was undertaken, vital dental evidence was preserved. As a result of the experience in this particular DVI incident, where remains were exposed to prolonged high temperature and physical damage, new protocols have been formulated. Adherence to these protocols will maximise the recovery and preservation of dental evidence at the scene and during transportation to the mortuary.

摘要

灾难遇难者身份识别(DVI)工作的成功依赖于是否能充分获取到尸检数据,从而与失踪人员的生前记录进行有意义的比对。人体在经历维多利亚州“黑色星期六”山火时所遭受的长时间高温,往往会导致其被焚烧至脆弱的骨骼残骸。然而,牙齿结构是人体最耐用的组织,往往能在长时间的高温下幸存下来。如果不在现场和运往太平间的过程中保护脆弱的遗体,骨骼和牙齿结构可能会受到破坏。这种破坏将导致难以获取尸检证据,并在调查的和解(正式识别)阶段导致问题。在为说明这些问题而呈现的两个案例报告中,在现场和运往太平间的过程中,牙齿结构都有明显的损失和退化。在第一个未对遗体提供任何保护的案例中,所有解剖牙齿结构全部完全丢失。在第二个案例中,对结构进行了保护,重要的牙齿证据得以保留。由于在这一特定的 DVI 事件中的经验,遗体暴露在长时间的高温和物理损伤下,因此制定了新的协议。遵守这些协议将最大限度地提高现场和运往太平间过程中牙齿证据的恢复和保存。

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