[Influence of occlusal contacts on tooth displacement for mesio-distal direction].
[Influence of occlusal contacts on tooth displacement for mesio-distal direction].
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[咬合接触对牙齿近远中方向位移的影响]。
DOI：
10.5357/koubyou.71.18
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
A. Tokuda
中科院分区：
文献类型：
--
作者：
A. Tokuda
为了制作一个与口颌系统功能协调的修复体，必须尽可能准确地再现咬合关系。本研究旨在探讨咬合接触对牙齿位移的影响，并明确修复体的最佳咬合接触。本研究测量了6名健康成人的6颗上颌左第一磨牙的位移路径。我们给每个测试牙齿8个模式的人工咬合接触，附着在咬合面上的铂箔。受试者被要求在牙尖交错位置（= ICP）进行咬合，中等咬合力，并通过M-3型牙齿位移传感器测量三维牙齿位移路径。得出以下结论。1.使用学生的t检验进行统计分析，这表明，不同的颊舌位置的咬合接触影响牙齿位移的方向。2.在颊侧牙尖中具有咬合接触的牙齿在近中颊侧方向上移位，因此这可能产生宽的牙弓，并且在牙齿的远侧邻间接触区域处产生轻微的差异。3.结果表明，在颊侧牙尖有咬合接触的牙齿在颊根尖方向旋转，与自然牙相反。
To fabricate a prosthesis which is functionally harmonized with the stomatognathic system, the interocclusal relationship must be reproduced as accurately as possible. This study investigated the influence of the occlusal contacts upon tooth displacement and clarified the optimal occlusal contacts for the prosthesis. The displacement paths of six maxillary left first molars of six adults in good general health were measured in this study. We gave each test tooth eight patterns of artificial occlusal contacts by attaching platinum foil on the occlusal surface. Subjects were asked to perform clenching at the intercuspal position (= ICP) with medium occlusal forces, and 3-dimensional tooth displacement paths were measured by the Type M-3 tooth displacement transducer. The following conclusions were obtained. 1. Using the Student's t-test for statistical analysis, it was suggested that the difference of the buccolingual location of occlusal contacts influenced the direction of the tooth displacement. 2. The tooth which had occlusal contact in the buccal cusp displaced in the mesio-buccal direction, so this may create a wide dental arch and a slight discrepancy was generated at the distal interproximal contact area of the tooth. 3. It was shown that the tooth which had occlusal contact in the buccal cusp rotated in the buccoapical direction in reverse to the natural tooth.