One had its one side of the jaws been treated by GTR, the other side was treated by flap operation therapy;
每组中一只动物一侧进行GTR治疗，另一侧只进行翻瓣术治疗；
Conclusion: Strengthening the observation and nursing before and after free flap operation may improve the operation success rates.
结论：加强游离皮瓣手术前后的护理观察可提高手术成功率。
Results after flap operation, the inversely impacted teeth was aligned by using fixed appliance for 12 ~ 18 months. And after fenestration it needs 8 ~ 12 months.
结果翻瓣术式后固定矫正器经12 ~ 18个月，开窗术式后固定矫正器8 ~ 12个月使倒置埋伏阻生牙进入牙弓排齐。
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