Masters P M
Forensic Sci Int. 1986 Nov;32(3):179-84. doi: 10.1016/0379-0738(86)90080-0.
The extent of aspartic acid racemization in human dentin can be used to assess chronological age of the individual. This novel chemical method of aging human remains has potential applications in forensic sciences. Six autopsy cases have been analyzed for D/L aspartic acid contents, and their ages at death calculated. Independent age information came from known identity, tooth maturation, or tooth wear estimations. The six cases represented a range of postmortem fates: recent demise, burial, and ground surface exposure. Five samples, four recently deceased and one a burial, showed racemization ages in close agreement with other age data. One specimen, subjected to 51 days of open air exposure, exhibited a vastly inflated racemization age. Postmortem conditions are crucial to the accuracy of racemization age at death measurements.
人牙本质中天冬氨酸消旋化的程度可用于评估个体的实际年龄。这种鉴定人类遗骸年龄的新化学方法在法医学中有潜在应用价值。已对6例尸检案例的D/L天冬氨酸含量进行了分析，并计算了其死亡年龄。独立的年龄信息来自已知身份、牙齿成熟度或牙齿磨损估计。这6个案例代表了一系列死后情况：近期死亡、埋葬和地面暴露。5个样本，4个近期死亡案例和1个埋葬案例，其消旋化年龄与其他年龄数据高度一致。1个样本暴露于空气中51天，其消旋化年龄大幅虚增。死后情况对于死亡时消旋化年龄测量的准确性至关重要。
