解剖学报

›› 2010, Vol. 41 ›› Issue (5): 737-744.doi: 10.3969/j.issn.0529-1356.2010.05.020

• 论著 • 上一篇    下一篇

华中地区近代人群上、下颌第一臼齿齿冠及齿尖面积

周蜜1;邢松2,3*   

  1. 1.湖北省文物考古研究所，武汉430077; 2.中国科学院古脊椎动物与古人类研究所，北京100044;3.中国科学院研究生院，北京100039
  • 收稿日期:2009-09-15 修回日期:2009-11-12 出版日期:2010-10-06
  • 通讯作者: 邢松

Crown and cusp areas of upper and lower first molars of recent central Chinese population

  1. 1.Institute of Archeology and Cultural Relics of Hubei Province, Wuhan430077, China; 2.Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing100044, China;3.Graduate University of Chinese Academy of Sciences , Beijing100049,China
  • Received:2009-09-15 Revised:2009-11-12 Online:2010-10-06
  • Contact: XING Song

关键词: 齿冠面积, 齿尖相对面积, 变异, 演化, 形态测量, 华中地区近代人群

Abstract: Objective Total crown basal area (TCBA) and relative basal cusp area (RBCA) of 282 MSUP>1/SUP> and MSUB>1/SUB> from archeological sites spanning from Neolithic time to Qing dynasty (5 000\|200 years BP) were measured and analyzed to obtain tooth size and variations of recent Chinese populations in central China. Methods With the same standard, the high resolution pictures of occlusal surface were taken for each tooth. Digital image technique and morphometric analysis were used to obtain the TCBA and RBCA for each tooth. Results The RBCAs exhibits a sequence of protocone >paracone> metacone > hypocone in MSUP>1 /SUP>and protoconid > metaconid > hypoconid> entaconid >hypoconulid in MSUB>1/SUB>; the RBCA variations of MSUB>1/SUB> are collectively larger than those of MSUP>1/SUP>. From Neolithic time to Qing Dynasty, the MSUP>1/SUP> and MSUB>1/SUB> TCBA reduced about 6.57% and 6.15% respectively. In contrast, the RBCAs of either MSUP>1/SUP> or MSUB>1/SUB> stay relatively stable in the same period of time. Conclusion Change of food structure is thought to be the most probable reason accounting for this change in consideration of the archeological sites background. The RBCA now presented by MSUP>1/SUP> and MSUB>1 /SUB>of modern humans formed at least 5 000 years ago.

Key words: Crown basal area, Relative basal cusp area, Variation, Evolution, Morphometric, Recent central Chinese population

中图分类号: