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

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.