摘要
目的通过研究新石器时期人类牙齿解剖特点,并与现代人类牙齿进行比较,探讨牙齿的演化规律。方法选取新石器时期人类保存状态良好、无严重破损与磨耗的单个牙齿602枚,对牙齿全长、牙冠高度、牙根长度、牙冠长度、牙颈长度、牙冠宽度、牙颈宽度等进行解剖数据测量、形态学观察及统计学分析。结果新石器时期人类牙根长度大于现代人类的牙根长度;牙冠高度小于现代人类的牙冠高度;而牙冠长度、牙冠宽度、牙颈长度、牙颈宽度均与现代人类牙齿相似。结论新石器时期人类牙根长大于现代人类、牙冠高小于现代人类,说明牙、颌系统承受的咀嚼压力比现代人大,吃的食物坚硬、颗粒大且粗糙;而牙冠的长度、牙冠宽度、牙颈长度、牙颈宽度均与现代人类牙齿相似,说明新石器时期人类在体质学上与现代人类近似。
Objective To compare the tooth anatomy between Neolithic and modem populations. Methods A total of 602 teeth from Neolithic times were made available to this study. The teeth studied were kept intact and in good condition. The anatomical measurement and morphologic observation were performed on the following items： the length of the teeth , crown height,length of the roots, crown and neck, width of crown and neck. The data were statistically analysed. Results The roots were longer and the crown heights shorter in Neolithic times than in modern times. Other dimensions such as the length of crown and neck, the width of crown and neck in Neolithic populations were similar to those of the Modem＇s. Conclusion The roots of Neolithic teeth are longer than Modemn＇s, but the crowns are smaller than Modem＇s. Others dimensions of the teeth are similar between the two populations.
出处
《北京口腔医学》
CAS
2006年第4期244-246,共3页
Beijing Journal of Stomatology
关键词
牙齿解剖
新石器时期人类
现代人类
Tooth anatomy
Neolithic populations
Modern populations
