Richards L C, Miller S L
Department of Dentistry, University of Adelaide, Australia.
Am J Phys Anthropol. 1991 Feb;84(2):159-64. doi: 10.1002/ajpa.1330840205.
Tooth wear scores (ratios of exposed dentin to total crown area) were calculated from dental casts of Australian Aboriginal subjects of known age from three populations. Linear regression equations relating attrition scores to age were derived. The slope of the regression line reflects the rate of tooth wear, and the intercept is related to the timing of first exposure of dentin. Differences in morphology between anterior and posterior teeth are reflected in a linear relationship between attrition scores and age for anterior teeth but a logarithmic relationship for posterior teeth. Correlations between age and attrition range from less than 0.40 for third molars (where differences in the eruption and occlusion of the teeth resulted in different patterns of wear) to greater than 0.80 for the premolars and first molars. Because of the generally high correlations between age and attrition, it is possible to estimate age from the extent of tooth wear with confidence limits of the order of +/- 10 years.
从三个群体中已知年龄的澳大利亚原住民受试者的牙模计算出牙磨损分数（暴露牙本质与全冠面积的比率）。得出了将磨耗分数与年龄相关联的线性回归方程。回归线的斜率反映牙齿磨损率，截距与牙本质首次暴露的时间有关。前牙和后牙形态的差异体现在前牙磨耗分数与年龄之间呈线性关系，而后牙则呈对数关系。年龄与磨耗之间的相关性范围从第三磨牙的小于0.40（牙齿萌出和咬合的差异导致不同的磨损模式）到前磨牙和第一磨牙的大于0.80。由于年龄与磨耗之间通常具有较高的相关性，因此可以根据牙齿磨损程度估计年龄，置信区间约为±10岁。
