Analysis of the intersurface relation between opposing first molars in the gliding phase of chewing cycle

咀嚼周期滑动阶段相对第一磨牙界面关系分析

基本信息

  • 批准号:
    03670911
  • 负责人:
  • 金额:
    $ 1.28万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
  • 财政年份:
    1991
  • 资助国家:
    日本
  • 起止时间:
    1991 至 1992
  • 项目状态:
    已结题

项目摘要

In order to analyze occlusal relation between opposing teeth during mandibular movements, a computer-aided analyzing system was developed, combining jaw movement measurement and three-dimensional shape measurement. Then, the occlusal relationships on the first molars during lateral excursion were investigated. Employment of this movement, instead of chewing, came from the the following reasons: 1) it can be recorded easily with high reproducibility and 2) its path almost coincides with that in the gliding phase of chewing cycle.A photo-electronic system using LEDs and PSD cameras and a three-dimensional laser scanner, both of which were developed previously, were employed, to measure jaw movements and tooth shape, respectively.The occlusal relationship was evaluated quantitatively in the following manner: 1) for every point on the upper surface, its minimum distance from the opposing lower surface was obtained, and 2) the area of the upper surface region with that distance being * 0.3mm or 1.0mm was calculated, which was denoted by S(0.3) or S(1.0), respectively.Decreasing rate of S(1.0) during lateral excursion on the working side is smaller than that on the non-working side, as was expected. As for S(0.3), however, its decreasing rate was almost the same on the both sides, unexpectedly. This revealed the fact that the disclosion in the contact or near contact portions was almost the same on the both sides, suggesting that the opposing first molars are close to each other during lateral excursion even on the non-working side.
为了分析下颌运动过程中相对牙齿之间的咬合关系,开发了一种结合下颌运动测量和三维形状测量的计算机辅助分析系统。然后,研究了侧移期间第一磨牙的咬合关系。采用这种运动而不是咀嚼,是出于以下原因:1)它可以轻松地以高再现性记录,2)它的路径几乎与咀嚼周期的滑动阶段重合。采用先前开发的使用 LED 和 PSD 相机的光电系统以及三维激光扫描仪,分别测量下颌运动和牙齿形状。咬合关系为 按如下方式进行定量评价:1)对于上表面上的每一点,求出其距相对下表面的最小距离,2)计算该距离为*0.3mm或1.0mm的上表面区域的面积,分别记为S(0.3)或S(1.0)。工作侧横向移动时S(1.0)的减小率小于非工作侧,如下: 预期的。然而,对于S(0.3),其下降率在两侧几乎相同,出乎意料。这揭示了这样的事实:两侧的接触或接近接触部分的暴露几乎相同,这表明即使在非工作侧,相对的第一磨牙在侧向偏移期间也彼此靠近。

项目成果

期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Toyohiko Hayashi: "A Computeriged System for Analyging Occlusal Relations Between Upper and Lower Teeth" Medical & Biological Engineering & Computing (Supplement). Vol.29. 402 (1991)
Toyohiko Hayashi:“用于分析上下牙齿咬合关系的计算机系统”医学
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    0
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HAYASHI Toyohiko其他文献

HAYASHI Toyohiko的其他文献

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{{ truncateString('HAYASHI Toyohiko', 18)}}的其他基金

Development of a Web-based system integrating a versatile communication aid with its use management and analysis.
开发一个基于网络的系统,将多功能通信辅助工具与其使用管理和分析相结合。
  • 批准号:
    24500641
  • 财政年份:
    2012
  • 资助金额:
    $ 1.28万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Development of a single switch with which ALS patients can operate computer for a long period of time under a wide variety of environments
开发单一开关,使 ALS 患者可以在各种环境下长时间操作计算机
  • 批准号:
    19500472
  • 财政年份:
    2007
  • 资助金额:
    $ 1.28万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
A Non-Invasive Measurement System for Larynx Motion Developed for Swallowing Rehabilitation
专为吞咽康复而开发的喉部运动无创测量系统
  • 批准号:
    17300181
  • 财政年份:
    2005
  • 资助金额:
    $ 1.28万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Functional Analysis of the Temporal Muscle during Open-Close Movement Using an Autonomous Jaw-Movement Simulator
使用自主下颌运动模拟器进行开闭运动期间颞肌的功能分析
  • 批准号:
    09680850
  • 财政年份:
    1997
  • 资助金额:
    $ 1.28万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Development of a Three-Dimensional Shape Measurement System for Occlusal Surfaces Using a Laser Beam Section Method
使用激光束截面法开发咬合面三维形状测量系统
  • 批准号:
    01571064
  • 财政年份:
    1989
  • 资助金额:
    $ 1.28万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)

相似海外基金

A study of concavo-convex formation mechanism in occlusal surface by using of TDL culture.
利用 TDL 培养研究咬合面凹凸形成机制。
  • 批准号:
    22592031
  • 财政年份:
    2010
  • 资助金额:
    $ 1.28万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
An investigation of the occlusal surface of artificial teeth on complete dentures using finite element analysis and the optimization method
利用有限元分析和优化方法研究全口义齿的咬合面
  • 批准号:
    21592440
  • 财政年份:
    2009
  • 资助金额:
    $ 1.28万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
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