新疆洋海墓地青铜时代居民错牙合畸形患病率及构成分析

目的：通过对新疆青铜时代居民错牙合畸形的观察，分析古代居民错牙合畸形的发病情况，并与现代居民对比，探讨其历史演进及发病机制。方法：筛选上、下牙列较完整能进行咬牙合观察的49例头骨，以个别正常牙合为标准进行调查。结果：新疆鄯善洋海青铜时代居民错牙合畸形率为30.61%。Angle错牙合分类中，AngleⅠ类所占比例最大（73.33%）；而在毛燮均错牙合分类中，毛氏Ⅰ类所占比例最大（33.33%）。结论：新疆鄯善洋海青铜时代居民错牙合畸形率较现代居民和较近时代居民的错牙合率低；错牙合畸形是随人类的种族演化而发生发展的；人类的饮食结构与错牙合畸形的发生有着密切联系。

Morbility rate and composition analysis of malocclusion of resident in bronze age from Yanghai cemetery, Xinjiang

Objective To investigate and analysis the situation of malocclusion of 49 skulls of ancient resident in Xinjiang, and discuss the history evolution and the pathologic mechanism of malocclusion. Methods The investigation was carried out based on the standard of individual normal occlusion. Results Among the group of 49 skulls, the morbility rate of malocclusion was 30. 61% ; in Angle's classification of malocclution, class I was the most (73. 33%); in Mao's classification of malocclution, class I was also the most (33. 33%). Conclusion The morbility rate of malocclusion of resident in bronze age is lower than that of modern resident and nearer ages resident. There is a close releationship between the human food construction and the pathogenesis of malocclution.