Evaluation of proximal tooth contact tightness at rest and during clenching.
Evaluation of proximal tooth contact tightness at rest and during clenching.
复制标题
评估静止时和咬紧过程中近端牙齿的接触松紧度。
DOI：
10.1111/j.1365-2842.2004.01181.x
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发表时间：
2004
影响因子：
2.9
通讯作者：
M. Kori
中科院分区：
文献类型：
--
作者：
S. H. Oh;M. Nakano;E. Bando;S. Shigemoto;M. Kori
本研究的目的是开发一种测量近端牙齿接触紧密度的装置，并使用该装置在休息和紧握期间评估近端接触紧密度。20名健康牙列的年轻成年志愿者参加了这项实验。第二前磨牙和第一磨牙的上颌骨和下颌骨之间的近端牙齿接触的紧密性通过在休息时在它们之间拉动不锈钢条来测量，并且在牙尖交错位置咬肌最大自主收缩的20%和50%的握紧水平。近端接触紧密度随着上颌骨和下颌骨的咬合水平的增加而增加。在休息时，近端接触紧密度是在上颌骨比在下颌骨，而在咬紧它是在下颌骨。这些结果表明，在咬紧过程中，牙齿发生位移，并与相邻牙齿适当接触，从而可以在保持牙弓完整性的同时施加足够的咬合力。
The aims of this study were to develop a device for measuring the tightness of proximal tooth contact and to evaluate the proximal contact tightness using this device at rest and during clenching. Twenty young adult volunteers with healthy dentition participated in this experiment. The tightness of proximal tooth contact between the second premolar and the first molar of both the maxilla and the mandible was measured by pulling a stainless steel strip between them at rest, and at 20 and 50% clenching levels of maximum voluntary contraction of masseter muscles at intercuspal position. Proximal contact tightness increased as the clenching levels of both the maxilla and the mandible increased. At rest, proximal contact tightness was less in the maxilla than in the mandible, whereas during clenching it was less in the mandible. These results indicate that during clenching, the teeth are displaced and they contact appropriately with adjacent teeth, making it possible to exert sufficient occlusal force while maintaining the integrity of dental arches.