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目的研究口外弓推上颌磨牙向远中矫治安氏Ⅱ类错前后的组织差异。方法用口外弓推上颌磨牙向远中治疗50例安氏Ⅱ类错。通过治疗前后X线测量分析比较。结果磨牙关系均被纠正至安氏Ⅰ类关系。结论口外弓推磨牙向远中配合直丝弓矫治器是矫治安氏Ⅱ类错最有效的方法之一。
Objective To study the tissue differences of maxillary molar orthodontic treatment before and after treatment with Class Ⅱ malocclusion. Methods 50 cases of Class Ⅱ malocclusion were treated by maxillary molars with maxillary molars. Through the treatment before and after X-ray measurement analysis and comparison. Results Molar relationship were corrected to Class I relationship. Conclusion One of the most effective methods to correct Class Ⅱ malocclusion is to coordinate the external molar bowel orthodontics with straight wire appliance.