秦始皇帝陵区山任陶窑遗址人牙齿磨损状况分析

Tooth wear of the population from the terra-cotta site near the mausoleum of Qinshihuang

目的调查秦朝时期成人牙齿的磨损状况,以探寻牙齿磨损的规律及其发展趋势。方法测量并统计了秦始皇帝陵区山任陶窑遗址出土的113具人骨架全部牙齿的磨损度,采用Smith和Knight牙齿磨损指数分度方法,对全部2523个牙齿按牙位进行了分类统计,比较不同牙位牙齿平均磨损度的差别。结果不同牙位牙齿的磨损度从0.85±0.65到2.59±1.02不等。不同磨损度牙齿的构成比中,2度磨损的比例最高(43.16%)。不同年龄段牙齿磨损度有显著性的差异。结论左右上下对称牙位牙齿的磨损度基本相同。第一磨牙的磨损程度最重,第三磨牙的磨损程度最轻。第一磨牙、尖牙、中切牙的平均磨损度无显著性差异(P>0.05)。随年龄增大,牙齿磨损度逐渐加重。总体磨损程度较新石器时代人轻,而较现代人重。

AIM:To investigate the rules and trends of tooth attrition by studying the tooth wear of the people in the terra-cotta site in Qin dynasty.METHODS:2523 teeth of 113 individuals in terra-cotta site near the mausoleum of Qinshihuang in Lintong were measured by the Smith & Knight′s Tooth Wear Index.Differences of mean attrition of tooth in different positions were compared.RESULTS:The score of mean attrition of tooth was from 0.85±0.65 to 2.59 ±1.02 in different position.There was a significant difference between variations.CONCLUSION:The first molar was the most serious and the third molar was the least.There was no obvious difference in the mean attrition at the position of the first molar,canine and central incisor ( P >0.05).The frequency of tooth wear increased with the age of persons.Their general attrition was less severe than neolithic people′s attrition and more than modern people. [