Mandibular torus variation of Chinese ancient population / 解剖学报

ABSTRACT

Objective To present the performance of mandibular torus of Chinese in the Holocene, to analyze the age variation and the intercrowd variation of the mandibular torus and to explore related reasons. Methods Image comparison and combination description of the mandibular torus with seeds of the specified size, such as peanuts, soybeans, pumpkin seeds, etc,and compare them in different eras,genders,and locations. Results The result showed that the male's mandibular torus was distinctively stronger than that of the female. It was larger in the Neolithic Age than in the Bronze and Iron Age and the size decreased further as human beings moved into the modern era. Iri comparison of mandibular torus in different locations, Jiangjialiang was the largest, Xinjiang was the second, and Tuchengzi and Lamadong were the smallest. Conclusion During the Holocene period, the degree of bulging of the mandibular torus is reduced from time to time, and the difference in the performance of the mandibular torus may be closely related to the difference in mastication pressure caused by food differences.