目的研究分析牙颌组织在隐形矫治器作用下的生物力学特性,以及隐形矫正器的作用力系和作用效果。方法建立包括牙齿、牙周膜和牙槽骨在内的上颌三维有限元模型。根据正畸过程中牙齿的典型移动情况,设计多个矫正方案模拟。在此基础上分析在隐形矫治器作用下的牙颌组织的应力和应变情况。同时与传统固定矫治器的相关分析结果进行对比。结果隐形矫正器与传统的固定矫治器作用下牙颌组织的应力应变分布相近,且应力变化趋势相似。结论通过合理设计隐形矫治器,可以实现畸形的矫正及满足矫正过程中患者对美观的要求。
Objective By biomechanical research on dental cast with invisible orthodontic appliances, analyze the features of the orthodontic forces and effect of invisible appliances.Method A three-dimensional FE model of dental cast was set up, which includes teeth£?periodontal membrane and alveolar bone.According to the typical movement of teeth in the course of orthodontic, several simulated cases were designed and analyzed numerically.The dental cast s stress and strain with invisible orthodontic appliances were a...