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[目的]探讨上颌活动矫治器治疗替牙期安氏Ⅲ类错的临床疗效。[方法]对68例替牙期安氏Ⅲ类错患者,采用上颌活动矫治器进行矫治。观察矫治前后牙齿及牙周组织变化,并进行治疗前后的X线头影测量分析。[结果]本组68例患者,经过上颌活动矫治器矫治,前牙反解除,覆覆盖关系正常,磨牙基本达到中性关系,治疗前后牙齿颜色、牙周组织均无明显改变,上下前牙无松动,不导致牙髓组织坏死和牙周病。经1～2年随访观察,无复发,面型有了明显改善。[结论]上颌活动矫治器使用简单,方便,不适感少,是治疗替牙期安氏Ⅲ类错的一种简便而有效的治疗方法。
[Objective] To investigate the clinical effect of maxillary movable appliance in treating Class Ⅲ malocclusion during dentition. [Method] 68 cases of malocclusion of Angle Class Ⅲ malocclusion were treated with maxillary movable appliance. The changes of teeth and periodontal tissues before and after treatment were observed and analyzed by X-ray before and after treatment. [Result] The group of 68 patients underwent orthodontic treatment with maxillary active appliance, the anterior antelopedis was removed, the coverage of the lamina was normal, the molars basically reached the neutral relationship, the color of the tooth and the periodontal tissue were not changed before and after treatment, No loose anterior teeth, pulp necrosis and periodontal disease. After 1 to 2 years of follow-up observation, no recurrence, the surface has been significantly improved. [Conclusion] The maxillary movable appliance is simple, convenient and less uncomfortable. It is a simple and effective treatment for Angle Ⅲ malocclusion during dentition.