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目的:探讨上颌前方牵引治疗替牙期骨性Ⅲ类错牙合的疗效。方法:对16例替牙期骨性Ⅲ类错牙合的患者采用上颌前方牵引进行矫治。结果:经过6-12个月的治疗后,患者的面部侧貌有很大改善。X线头影测量结果证实,SNA角平均增大2.02°,SNB角平均减小1.40°,ANB角平均增大3.61°。结论:上颌前方牵引可促进上颌向前发育,抑制下颌向前生长,有效改善面部侧貌。
Objective: To investigate the effect of maxillary anterior traction in treating periodontal osteosynthesis type Ⅲ malocclusion. Methods: 16 cases of skeletal Class Ⅲ malocclusion patients with maxillary anterior traction for correction. Results: After 6-12 months of treatment, the patient’s facial appearance has been greatly improved. The results of X-cephalometry confirmed that the average SNA angle increased 2.02 °, the average SNB angle decreased 1.40 °, and the ANB angle increased 3.61 ° on average. Conclusion: Anterior maxillary traction can promote the maxillary forward development, inhibit the forward growth of the mandible, and effectively improve facial features.