目的 :探讨在正畸治疗中恒尖牙阻生激光导萌的效果。方法 :对 9例不同程度阻生的恒尖牙采用ＣＯ2 激光或半导体激光开窗导萌 ,用方丝弓矫治器排齐其他牙齿。结果 :激光手术操作灵活方便 ,出血少 ,手术视野清晰 ,手术时间短 ,疗效确切。结论 :激光开窗导萌阻生恒尖牙可取代手术 Objective: To investigate the effect of laser induced adventitia of permanent canine in orthodontic treatment. Methods: Nine cases of impacted canines with different degrees of incision were made using CO2 laser or semiconductor laser with fenestration. The other appliances were aligned with square arch appliance. Results: Flexible and convenient operation of laser surgery, less bleeding, a clear field of vision, short operative time, the exact effect. Conclusion: laser fenestration impacted canines can replace surgeries