替牙期无托槽隐形矫治器扩弓治疗改良设计的有限元分析

吕秦毅, 高子琦, 冯青辰, 梅宏翔, 李娟

Optimizing arch expansion with clear aligners in the mixed dentition based on finite element analysis

LÜ Qinyi, GAO Ziqi, FENG Qingchen, MEI Hongxiang, LI Juan

表3 扩弓治疗（工况1）前后牙冠、牙根定点水平方向移动情况

Tab 3 Horizontal movement of crown and root points before and after arch expansion treatment （load 1）

Tooth Horizontal displacement/mm Right Left 1st permanent molar Crown ‒0.126 ‒0.081 Root ‒0.034 ‒0.022 2nd deciduous molar Crown ‒0.140 ‒0.135 Root ‒0.048 ‒0.043 1st deciduous molar Crown ‒0.142 ‒0.152 Root ‒0.056 ‒0.058 Deciduous canine Crown ‒0.164 ‒0.173 Root +0.031 +0.042