Al-Qattan S I, Elfawal M A
Department of Forensic Medicine, Ministry of Interior, Kuwait.
J Forensic Leg Med. 2010 Aug;17(6):325-8. doi: 10.1016/j.jflm.2010.05.001. Epub 2010 Jun 1.
Lead accumulation in 398 permanent teeth of Kuwaiti subjects, aged between 11 and 74 years (mean age=25+/-8 years) was analyzed by atomic absorption spectrophotometry. A significant correlation was found between dentin lead levels and age. The mean dentin lead concentration was significantly higher in males than in females (6.8+/-4.7 and 5.6+/-4.6, respectively, p=0.015). A formula was established to calculate age from lead levels in teeth (Age=1.2 x dentin Pb+17.6). The proposed formula was applied to a validation group of 90 Kuwaiti subjects (45 males and 45 females, aged between 13 and 58 years). The standard error of age estimation, applying the proposed formula, was +/-5.8 years with R square=52.3%. The mean difference between the true and calculated ages was 1.3+/-4.8 years. The coefficient of variation was 43%. The proposed formula is merely applicable to Kuwaiti population, and can be of a significant value in forensic practice whenever examining human skeletal remains, particularly of Kuwaiti war victims. Other formulas may well be established via similar studies on dentin lead levels on various populations.
采用原子吸收分光光度法分析了398颗年龄在11至74岁之间（平均年龄 = 25±8岁）的科威特受试者恒牙中的铅蓄积情况。发现牙本质铅含量与年龄之间存在显著相关性。男性牙本质铅平均浓度显著高于女性（分别为6.8±4.7和5.6±4.6，p = 0.015）。建立了一个根据牙齿中的铅含量计算年龄的公式（年龄 = 1.2×牙本质铅含量 + 17.6）。将该公式应用于90名科威特受试者（45名男性和45名女性，年龄在13至58岁之间）的验证组。应用该公式估计年龄的标准误差为±5.8岁，决定系数R² = 52.3%。实际年龄与计算年龄之间的平均差异为1.3±4.8岁。变异系数为43%。该公式仅适用于科威特人群，在法医实践中，每当检查人体骨骼遗骸，特别是科威特战争受害者的遗骸时，可能具有重要价值。通过对不同人群牙本质铅含量进行类似研究，很可能会建立其他公式。
