Comparison of the Teeth between Ancient Human in Shimen County of Changde and Moden Human.

doi:10.13701/j.cnki.kqyxyj.2016.12.019

Abstract

Abstract: Objective: To compare the morphological structure of ancient human teeth found in Shimen County, Changde City, Hunan Province and modern teeth. Methods: Sound permanent ancient teeth were collected, and modern permanent teeth were selected following the principle: the same kind in same site. Morphological indexes, including the tooth length, crown length, root length, mesiodistal diameter of crown and cervix, labiolingual diameter of crown and cervix were recorded. The cross-section area of each tooth was measured. The data were statistically analyzed. Resluts: The crown length and root length of the ancient teeth are longer than that of modern teeth. In maxilla I1, P1, M1 and mandible I1, I2, C, P2, the differences were statistically significant (P<0.05). The mesiodistal diameter of crown and cervix, the labiolingual diameter of crown and cervix of ancient tooth were longer than that of moden ones. The cross-section area of the ancient tooth was larger than that of modern teeth but without significant differences. Conclusion: Ancient human teeth were significantly longer than modern teeth.

Key words: Shimen County of Changde City, Ancient tooth, Morphology, Measurement , Comparison

CLC Number:

SHI Jia-yi, TU Ling, LI Feng-hua.. Comparison of the Teeth between Ancient Human in Shimen County of Changde and Moden Human.[J]. Journal of Oral Science Research, 2016, 32(12): 1303-1307.

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