3-D simulation of the occlusion in the human evolution

人类进化过程中咬合的 3D 模拟

基本信息

  • 批准号:
    06454033
  • 负责人:
  • 金额:
    $ 4.42万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
  • 财政年份:
    1994
  • 资助国家:
    日本
  • 起止时间:
    1994 至 1996
  • 项目状态:
    已结题

项目摘要

This research is two fold. One is on the restoration of the occlusion analyzed by the 3-D measurement of molars, and the other is the investigation of the types of occlusion in various populations based on the observation of the mandible and teeth of fossil and extant hominoids.based on the observation of the mandible and teeth of fossil and extant hominoids.(1) Human molars have three-dimensionally complicated structures. Mechanism of occlusion of a certain population can be traced by the measurement of these structures. This research deals with fossil human molars without attrition with the use of laser 3-D measurement system (Kashimura Co.Ltd.) There is a basic difference of the positional design of cusps between hominoids and anthropoid apes. Modern humans have relatively small teeth but high cusps in the homo lineage. Occlusal table proper is larger than other hominoids. Restoration of the molar crown from the heavily worn molar was tried with the use of 3-D morphing technique. Three-dimensional coordinates of the 49 (7X7) nodes of the matrix were given to the worn molar crown and the sufficient results were obtained.(2) Bony structures lie on the basement of occlusion. The mandibles of Jomon people, ancestors of modern Japanese from BC 10,000 to 300, were analyzed by the CT scanning. Buccal cortical bone was thick in this population. This implies large vector or force working on the teeth from lingual to buccal side. Heavy attrition in this population is also explained by this directional force. Type of occlusion were also investigated in the South Pacific populations who are thought to have idealistic occlusion among modern humans. Results suggested that edge-to-edge occlusion was popular in Melanesian population and that the type of occlusion in Micronesians was similar to Japanese one.
这项研究是双重的。一个是通过磨牙的三维测量分析咬合关系的恢复,另一个是通过对化石和现存人科动物的下颌骨和牙齿的观察研究不同人群的咬合类型。(1)人类磨牙具有三维复杂的结构。通过对这些结构的测量,可以追踪某一种群的咬合机制。本研究使用激光三维测量系统(Kashimura Co. Ltd.)对无磨耗的人类磨牙化石进行了研究。类人猿和类人猿的牙尖位置设计存在根本差异。现代人的牙齿相对较小,但在人属谱系中具有较高的牙尖。正常咬合面比其他类人猿大。应用三维变形技术对重度磨损磨牙进行牙冠修复。对磨损后的磨牙冠,给出了49个(7 × 7)节点的三维坐标矩阵,得到了充分的结果。(2)骨性结构位于咬合的基底上。本文通过CT扫描对绳纹人的下颌骨进行了分析。绳纹人是公元前10,000年至公元前300年的现代日本人的祖先。该人群颊侧皮质骨较厚。这意味着大的矢量或力从舌侧到颊侧作用在牙齿上。这种定向力量也解释了这一人口的严重减员。咬合类型也在南太平洋人群中进行了研究,这些人群被认为在现代人类中具有理想的咬合。结果表明,美拉尼西亚人的咬合类型以边对边为主,美拉尼西亚人的咬合类型与日本人相似。

项目成果

期刊论文数量(14)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Kanazawa, E.: "Anthropological view on the Occlusion of Japanese. (in Japanese)" Quintessence. 15. 1623-1632 (1996)
Kanazawa, E.:“人类学对日语闭塞的看法。(日语)”精髓。
  • DOI:
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  • 影响因子:
    0
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  • 通讯作者:
伊尾美穂子 金澤英作: "歯の形態の復元に関する3次元シミュレーション的研究" Anthropological Science. 未定. (1996)
Mihoko Io 和 Eisaku Kanazawa:“牙齿形态修复的三维模拟研究”人类学科学(1996)。
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    0
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  • 通讯作者:
Kasai, K., Kanazawa, E.et al.: "Morphological Characteristics of Vertical Sections of the Mandible Obtained by CT Scanning." Anthrop.Sci.104. 187-198 (1995)
Kasai, K.、Kanazawa, E.等人:“通过 CT 扫描获得的下颌骨垂直剖面的形态特征”。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Kanazawa, E.: "Occlusion of Pacific People." Japan.Oceania Assoc.News Letter. 55. 9-19 (1996)
金泽,E.:“太平洋人的闭塞”。
  • DOI:
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  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
金澤英作: "日本人の咬合と人類学-人類学的にみた現代日本人の咬合の平均像-" クインテッセンス. 15. 1623-1632 (1996)
金泽荣作:“日本的闭塞与人类学——从人类学角度看现代日本闭塞的平均形象”Quintessence 15。1623-1632(1996)
  • DOI:
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    0
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KANAZAWA Eisaku其他文献

KANAZAWA Eisaku的其他文献

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{{ truncateString('KANAZAWA Eisaku', 18)}}的其他基金

Dental Anthropological Study of Chinese Ethnic Minority with special reference of its relationship to East Asia
中国少数民族牙齿人类学研究及其与东亚的关系
  • 批准号:
    17570197
  • 财政年份:
    2005
  • 资助金额:
    $ 4.42万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Morphological change of some cranial structures
一些颅骨结构的形态变化
  • 批准号:
    12640699
  • 财政年份:
    2000
  • 资助金额:
    $ 4.42万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Dental Anthropology on the Formation of Sundadont
牙科人类学对 Sundadont 形成的探讨
  • 批准号:
    09640838
  • 财政年份:
    1997
  • 资助金额:
    $ 4.42万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)

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