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A Study on the Morphological Change of Tooth Crown due to the Occlusal Development with Use of the Three Dimensional Measuring System.

利用三维测量系统研究咬合发育引起的牙冠形态变化。

基本信息

批准号：
04404080
负责人：
NAKATA Minoru
金额：
$ 9.6万
依托单位：
KYUSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (A)
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1993
项目状态：
已结题

项目摘要

The ultimate goal of the study is to demonstrate the mutual and indispensable relationship between the form and function during the course of growth and development of the occlusion. The following results were obtained :1 In order to measure the surface contour of the tooth crown morphology such as the occlusal or contact facets and intra-oral change of restoration or interface between restoration and tooth margin, there will be two procedures. Those are the contact method with use of scratch needle and noncontact method by optical way. Although each method has advantageous and disadvantageous points, the contact method is very useful and accurate to measure the particular points, for example to standardize the three dimensional plane, while the non-contact method is efficient to measure the surface contour of the occlusal and contact facets.2 The computer program designed in this study was very effective to standardize the three dimensional plane by to input the three particular points and then the necessary information will be fed back to tilt the three dimensional plane at appropriate angle three dimensionally. This is useful when to analyze the three dimensional micro change of the tooth contour.3 The three dimensional change of occlusal contact was coordinated with the change in direction of three dimensional mandibular movement due to the development of the occlusal function.4 The Occlusat (by Fuji Film Co.) can be applicable in clinics of pediatric dentistry to diagnose the abnormal occlusal relationship and to make the better prognosis after the treatment of occlusal guidance.

本研究的最终目的是为了论证咬合在生长发育过程中形态与功能之间相互依存、不可分割的关系。1测量牙冠的表面轮廓，如咬合面或接触面，修复体的口内变化或修复体与牙体边缘的界面，将有两个步骤。这两种方法分别是利用划痕针的接触法和利用光学方法的非接触法。虽然每种方法都有优点和缺点，但接触法对于测量特定点是非常有用和准确的，例如标准化三维平面，而非本研究所设计的计算机程序通过输入三个特定的数据，可以有效地标准化三维平面，点，然后将反馈必要的信息以使三维平面三维地倾斜适当的角度。3咬合接触的三维变化与咬合功能发展引起的下颌运动方向的三维变化相协调。可应用于儿童牙科临床，对异常咬合关系进行诊断，并在咬合引导治疗后取得较好的预后。