目的 :探讨多用途弓及摇椅形唇弓治疗成人前牙深覆的临床疗效。方法 :使用X线头影测量方法对两种疗法的结果进行分析。结果 :两者在打开咬合的时间上无显著性差异 (P >0 0 5 ) ,但两者作用的部位不同。结论 :前牙深覆的矫治应根据不同的机制采用不同的技术手段 ,多用途弓可用于高角型和均角型深覆的矫治 ,摇椅形唇弓则应禁用于高角型深覆患者。 Objective: To investigate the curative effect of multi-purpose bow and rocking chair-shaped lip arch on treating deep ancestry of adult anterior teeth. Methods: The results of the two therapies were analyzed using X-cephalometry. Results: There was no significant difference in the time of opening the occlusion between the two groups (P> 0.05), but the roles of the two parts were different. Conclusion: The correction of anterior deep velum should be based on different mechanisms using different technical means, multi-purpose bow can be used for the treatment of high angle and angle deep overcoat, rocker-shaped lip should be banned in the deep angle of the overburden patient.