陕西长安区出土1000年前古人牙齿的磨耗状况分析

Tooth wear in human remains of 1000 years ago excavated from the Chang'an county in Shaanxi Province

目的:调查距今约1 100～1 300年前古人牙齿的磨耗状况,以探求牙齿磨耗的发生发展趋势。方法:观察记录62例陕西长安区出土1 000年前人骨架的全部牙齿的磨耗状况,并进行统计学分析。结果:不同磨耗程度牙齿的构成比中,2度磨耗的比例最高(36.80%)。尖牙和第一磨牙的磨耗程度最重,第三磨牙的磨耗程度最轻。所有上下对称牙位牙齿之间的磨耗程度及上下颌牙齿总的磨耗程度差异均没有显著性(P>0.05)。随年龄的增长,牙齿磨耗程度逐渐加重(P<0.05)。男性各牙位牙齿的磨耗程度均高于女性(P<0.05)。结论:本研究反映了1 000年前古人牙齿磨耗的一般状况;分析了不同时期饮食结构、模式与牙齿磨耗之间的相互关系和演化发展规律。

Objective： To investigate the tooth attrition in human remains of 1 000 years ago excavated from the Changan county in Shaanxi Province.Methods： 625 teeth of 62 human remains of 1 000 years ago were measured by the Smith Knight＇s Tooth Wear Index.Data were analyzed with the SPSS 12.0 for soft ware.Results： In the whole attrited teeth,the proportion of the teeth with score 2 attrition was the highest（36.80%）.The first molar and the canine were attrited most seriously and the attrition of the third molar was the lightest.The attrition in symmetrical tooth position between the maxilla and the mandibula was not significantly different（P0.05）.The tooth wear increased with age（P0.05）.The tooth attrition score of males was greater than that of the females（P0.05）.Conclusion： The frequency,distribution,and characteristics of tooth wear of the population of 1 000 years ago is presented.