安氏Ⅱ类１分类错牙合在我区比较常见，若用固定矫正器治疗，一般等替牙后才进行，但是此时往往难以解决颌骨失调的问题。作者于乳牙期及替牙期就开始用前庭盾矫治，通过重建牙弓内外的动力平衡来消除牙颌面畸形，抑制上颌过分向前生长，并充分发挥下颌的生长潜力，从而减小上 Class Ⅱ Division 1 malocclusion is more common in our region, if the treatment with a fixed appliance, usually after waiting for the tooth, but this time is often difficult to solve the problem of jaw disorders. The author began to use the vestibular shield during primary periodontal and molar period to eliminate the maxillofacial deformity by reconstructing the dynamic balance between the dental arch and the inside and outside, to inhibit the maxillary forward growth and to fully exert the growth potential of the mandible,