西安鱼化寨史前婴幼儿乳齿的特征

本文通过对西安鱼化寨史前婴幼儿乳齿特征的观察研究,发现人类乳齿与恒齿在种族识别方面具有相同的价值,且乳齿齿冠部分形态特征相较于恒齿表现的更加鲜明。统计分析结果显示,鱼化寨婴幼儿乳齿形态与东北亚人群具有的“中国型牙”接近,同时兼有少量东南亚人群具有的“巽他型牙”特征,这与同时期关中地区其他古代人群颅骨上反映的种族特征基本一致。笔者对这种现象产生的原因进行了分析。此外,本文还针对鱼化寨婴幼儿乳齿的测量数据进行了分析和探讨。

A study on the characteristics of prehistoric deciduous teeth of infants in Yuhuazhai village,Xi’an

Through observing and studying the characteristics of the deciduous teeth of prehistoric infants in Yuhuazhai village, Xi’an, this paper finds that the deciduous teeth and permanent teeth have the same value in ethnic identification, and the partial morphological characteristics of the deciduous teeth are more distinct than that of permanent teeth. The results of statistical analysis showed that the morphology of the deciduous teeth of Yuhuazhai infants was similar to that of Sinodonty of Northeast Asian populations, and the Sundadonty of a small number of Southeast Asian populations, which was basically consistent with the cranial characteristics of other ancient populations in Guanzhong during the same period. The author analyzes the reason of this phenomenon. In addition, the measurement data of the deciduous teeth of Yuhuazhai infants were analyzed and discussed.