Unité Mixte de Recherche 7268/CNRS-EFS-Aix Marseille Université, 51 Boulevard Pierre Dramard, 13916, Marseille Cedex 20, France,
Int J Legal Med. 2014 Jan;128(1):161-9. doi: 10.1007/s00414-013-0863-2. Epub 2013 Apr 28.
Accurate age determination is fundamental in both forensic medicine and anthropology. Many methods that relate dental characteristics to adult age have been proposed, but there is still no simple and reliable method that does not damage the study material. The aim of this work was to propose a relevant and practical technique for determining age in adults that could be used in both living and deceased individuals. The sample was composed of 210 CT scans from individuals aged from 15 to 85 years old, with four healthy canines present in the mouth. The 840 canines were modelled using Mimics® 10.01 software. The pulp volume/total volume ratio ×100 was determined for each tooth. Seven mathematical models, corresponding to all possible real situations, were determined by the weighted least squares method and ranked in order of relative performance. The adequacy of the seven models to the data was very high with the regressions proposed (0.915 < R (2) adjusted < 0.964). Ranked in order of performance, the maxillary model was the most powerful of the seven models for age determination, followed by the 4 canines model, the 13 model and the 23 model.
准确的年龄确定在法医学和人类学中都很基础。已经提出了许多将牙齿特征与成年年龄相关联的方法，但仍然没有既不损坏研究材料又简单可靠的方法。本研究旨在提出一种适用于确定成年人年龄的相关实用技术，该技术可用于活体和死者个体。样本由 210 名年龄在 15 至 85 岁之间的个体的 CT 扫描组成，这些个体的口中都有四颗健康的恒齿。使用 Mimics® 10.01 软件对 840 颗恒齿进行建模。确定了每个牙齿的牙髓体积/总体积比×100。通过加权最小二乘法确定了七个数学模型，这些模型对应于所有可能的真实情况，并按相对性能排序。提出的回归（0.915<R(2)调整<0.964）表明，这七个模型对数据的拟合程度非常高。按性能排序，上颌模型是七个模型中最强大的用于年龄确定的模型，其次是 4 颗恒齿模型、13 颗恒齿模型和 23 颗恒齿模型。
