方法：建立兔牙正畸移动实验模型。
METHODS: The models of rabbits orthodontic tooth movement were established.
目的：通过外源性补锌观察锌对兔牙正畸移动的影响。
AIM: to investigate the effect of zinc supplement on orthodontic tooth movement in rabbits.
结论：狗乳牙正畸移动后恒牙胚牙周组织发生骨改建。
Conclusion: Bone remodel around the permanent tooth germ resulted from primary tooth orthodontic movement.
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