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目的:调查六千年前新石器时期古人牙齿的磨耗状况,以探寻牙齿磨耗的规律及其演化发展趋势。方法:观察记录并统计了西安半坡博物馆馆藏76例人头颅骨全部牙齿的磨耗情况,用SPSS 12.0软件对全部的904个牙齿进行了统计学分析。结果:不同磨耗度牙齿的构成比中,2°磨耗的比例最高(37.06%)。左右上下对称牙位牙齿的磨耗基本相同。第一磨牙的磨耗程度最重,第三磨牙的磨耗程度最轻。不同年龄段牙齿磨耗度有显著性差异,随年龄的增长,牙齿磨耗度逐渐加重。每一牙位牙齿平均磨耗度男女性别间无显著性差异(P>0.05)。结论:新石器时代古人牙齿的总体磨耗程度较现代人重。
Objective: To investigate the wear status of the ancients in the Neolithic Age six thousand years ago to explore the regularity of tooth wear and its evolution trend. Methods: We observed and recorded the wear status of all the skull teeth of 76 cases in Xi’an Banpo Museum. All the 904 teeth were analyzed by SPSS 12.0 software. Results: The ratio of 2 ° wear was the highest (37.06%) in the composition ratio of teeth with different degrees of wear. Symmetrical teeth around the tooth wear the same. The first molar wear the heaviest, the third molar wear the lightest. Different degrees of tooth wear have significant differences, with age, tooth wear gradually increased. There was no significant difference between male and female in average wear rate per tooth (P> 0.05). Conclusion: The total abrasion of the Neolithic teeth was heavier than that of the modern people.