Roberts Grace, Paul Kathleen S, Hara Anderson T, Algarni Amnah, Ungar Peter S
University of Tennessee Health Science Center College of Medicine, Memphis, TN, USA.
University of Arkansas, Fayetteville, AR, USA.
Acta Stomatol Croat. 2023 Mar;57(1):12-21. doi: 10.15644/asc57/1/2.
Molar crown wear is often used in bioarchaeological research as a proxy for age at death. However, a small number of researchers have used premolars or compared the application of different methods of relative age estimation.
Using a sample of 197 previously extracted maxillary first premolars from US dental patients, we considered three protocols for estimating age: the Bang and Ramm/Liversidge and Molleson (BRLM) age estimate method, occlusal topographic analysis, and the Smith system of macrowear scoring. A previous study utilizing the Bang and Ramm method yielded an age estimate range of 9.4 to 10.8 years for the sample.
Our analyses showed no associations between occlusal topography parameters (occlusal slope, relief, or faceting) and BRLM age estimates, but some concordance was found between Smith scoring and BRLM ages estimates and between Smith scoring and occlusal topography parameters.
The results of the present study suggest that relationships between gross tooth wear, tooth shape, and dental age estimates are complex, and available methods should be considered together to gain a more comprehensive understanding of how teeth change their shape with wear throughout the lifecourse.
磨牙冠磨损在生物考古学研究中常被用作死亡年龄的替代指标。然而，少数研究人员使用前磨牙或比较了不同相对年龄估计方法的应用。
我们使用了197颗先前从美国牙科患者口中拔除的上颌第一前磨牙样本，考虑了三种估计年龄的方案：邦氏和拉姆/利弗西奇和莫利森（BRLM）年龄估计方法、咬合地形分析和史密斯宏观磨损评分系统。先前一项利用邦氏和拉姆方法的研究得出该样本的年龄估计范围为9.4至10.8岁。
我们的分析表明，咬合地形参数（咬合斜率、起伏或刻面）与BRLM年龄估计之间没有关联，但在史密斯评分与BRLM年龄估计之间以及史密斯评分与咬合地形参数之间发现了一些一致性。
本研究结果表明，牙齿总体磨损、牙齿形状和牙齿年龄估计之间的关系很复杂，应综合考虑现有方法，以便更全面地了解牙齿在整个生命过程中如何随着磨损而改变形状。
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