口腔医学研究

口腔医学研究 ›› 2016, Vol. 32 ›› Issue (12): 1303-1307.DOI: 10.13701/j.cnki.kqyxyj.2016.12.019

• 临床研究论著 • 上一篇    下一篇

常德石门古人类牙与湖南现代人牙比较分析

石佳怡1,涂玲1,李奉华2*   

  1. 1. 中南大学湘雅口腔医学院 湖南 长沙 410008;
    2. 湖南中南大学湘雅口腔医院 湖南 长沙 410008
  • 收稿日期:2015-10-08 出版日期:2016-12-25 发布日期:2016-12-26
  • 通讯作者: 李奉华,E-mail: 1286278576@qq.com
  • 作者简介:石佳怡(1994~ ),女,北京人,学士在读,研究方向是口腔医学。
  • 基金资助:
    中南大学大学生创新训练项目(编号:CY14238)

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

SHI Jia-yi1, TU Ling1, LI Feng-hua2*.   

  1. 1. School of Stomatology, Central South University, Changsha 410008, China;
    2. Xiangya Stomatological Hospital of Central South University. Changsha 410008, China.
  • Received:2015-10-08 Online:2016-12-25 Published:2016-12-26

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摘要： 目的:对发现于湖南省常德市石门县的古人类牙进行牙体测量,同时收集湖南当地现代人牙与之配对并测量分析,比较二者在形态结构上的区别。方法:选取牙体结构完整的古人类恒牙并按照“同种同类同位点”原则,收集现代人恒牙与之对应进行形态学测量。记录牙全长、冠长、根长、冠宽、颈宽、冠厚、颈厚等指标,计算各牙位牙横切面积。对二者的外形数据进行比较分析。结果:古人类牙的冠长与根长大于现代人牙,且在上颌I1、P1、M1及下颌I1、I2、C、P2的差异具有统计学意义(P<0.05)。古人类牙的冠宽、颈厚、冠厚、颈厚以及横截面积均不同程度地大于现代人牙,但差异不具有统计学意义。结论:古人类牙比现代人更长、更大、更厚,尤其在牙长度变化上更为显著,在进化过程中总体上呈现缩小的趋势。为人牙形态学研究积累了资料。

关键词: 常德石门, 牙, 形态学, 测量, 比较

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

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