目的：比较V型远中移动序列和ZC远中移动序列两种无托槽隐形矫治牙齿移动序列执行效果。 方法：建立包含牙体牙周膜牙槽骨及隐形矫治器的下颌右侧7颗牙的有限元模型，分别选用两种推磨牙远中移动对牙齿进行模拟第二磨牙远移0.5mm的过程，采用牙槽骨重建技术模拟长期牙齿移动效果。 结果：V型远中移动序列和ZC推磨牙远中移动序列第二磨牙最大远中位移分别为0.27mm、0.34mm，ZC远中移动执行效率增大13.34%；牙齿内倾分别矫正0.18mm、0.44mm，舌侧内倾角度分别矫正1.15°、2.69°，ZC舌侧内倾矫正率提高15.01%；远端倾斜分别增大1.83°、0.84°，ZC远中移动远端倾斜角度减小54.10%。 结论：本文比较了V型远中移动序列和ZC远中移动序列在磨牙远移等方面的执行效果。ZC远中移动序列方法在无托槽隐形矫治中能够更有效的实现磨牙远中移动，减少磨牙远中倾斜和矫正磨牙舌侧内倾，为无托槽隐形矫治创造前牙间隙提供有利条件。
Objective: To compare the effect of two clear aligner orthodontics tooth movement sequences V-Pattern and ZC molar distal movement. Methods: A finite element model of 7 mandibular right teeth with periodontal alveolar bone and braces was established. Two tooth sequences were selected to simulate the distant displacement of the second molar by 0.5mm, and the long-term tooth movement was simulated by the alveolar bone reconstruction technique. Results: The maximum distal displacement of the second molar in V-pattern and ZC sequences was 0.27mm and 0.34mm, respectively, and the ZC distal displacement efficiency increased by 13.34%. The tooth inclination was corrected by 0.18mm and 0.44mm, and the lingual inclination was corrected by 1.15° and 2.69°, respectively, and the correction rate of ZC lingual inclination was increased by 15.01%. The distal tilt of ZC was increased by 1.83° and 0.84° respectively, and the distal tilt of ZC was decreased by 54.10%. Conclusion: The effect of V-pattern and ZC sequences on molar distal movement was compared in this paper. The ZC sequence method can realize the distal molar movement more effectively, reduce the distal inclination of the molar and correct the lingual inclination of the molar, which provides favorable conditions for the orthodontic treatment of the anterior tooth.