Yamaguchi T, Yamada Y, Ohtani S, Kogure T, Nagao M, Takatori T, Ohira H, Yamamoto I, Watanabe A
Department of Forensic Dental Medicine, Kanagawa Dental College, Yokosuka, Japan.
Nihon Hoigaku Zasshi. 1997 Aug;51(4):324-30.
We describe two cases in which unknown bodies were positively identified from dental information and biochemical examination using tooth materials. In one case, a charred body was positively identified with little effort by comparison of antemortem dental records (dental chart and dental X-ray film) with postmortem data. In the other case, although the unknown individual had dental treatment, the police were unable to obtain the antemortem dental records of the victim. We then conducted biochemical analysis of teeth, facilitating personal identification using DNA analysis and age estimation based on aspartic acid racemization. The mutation obtained from the sequence of mtDNA and the genotypes of HLADQ alpha, HPRTB and ABO blood groups including the data for estimated age supported the kinship between the unknown individual and his mother. The data for maternally inherited mtDNA were of great importance in this case, since it was possible to obtain DNA from the mother. Dental identification in one of the most accurate methods of personal identification if suitable antemortem records are available. In the absence of such records, biochemical analysis of teeth also makes it possible to increase the probability of correct personal identification.
我们描述了两起通过牙齿信息和利用牙齿材料进行生化检测成功识别无名尸体的案例。在其中一起案例中，通过将生前牙科记录（牙科图表和牙科X光片）与死后数据进行比对，轻松地确定了一具烧焦尸体的身份。在另一起案例中，尽管无名个体接受过牙科治疗，但警方无法获取受害者的生前牙科记录。随后我们对牙齿进行了生化分析，通过DNA分析和基于天冬氨酸消旋化的年龄估计来协助身份鉴定。从线粒体DNA序列获得的突变以及HLADQα、HPRTB和ABO血型的基因型，包括估计年龄的数据，证实了无名个体与其母亲之间的亲属关系。在这个案例中，母系遗传的线粒体DNA数据非常重要，因为能够从其母亲那里获取DNA。如果有合适的生前记录，牙科鉴定是最准确的身份鉴定方法之一。在没有此类记录的情况下，对牙齿进行生化分析也能够提高正确身份鉴定的概率。
