观察和评价改良式活动矫治器矫治乳牙期前牙反颌的矫治效果

Corrective Effect Observation and Evaluation of Improved Mobile Orthodontic Appliances on Anterior Crossbite at Deciduous Stage

目的 探讨改良式活动矫治器矫治乳牙期前牙反颌的矫治效果。方法 将2021年1月—2022年12月在本院口腔科治疗的32例乳牙期前牙反颌患儿随机分为两组,对照组使用传统合垫舌簧治疗,观察组使用改良式活动矫治器治疗,对比两组的临床疗效、咬合指标、投影测量指标牙角和软组织指标、治疗满意度。结果观察组治疗有效率明显高于对照组(P<0.05);观察组治疗后OJ值、OB值均低于对照组(P<0.05);观察组治疗后SNA角大于对照组,ANB角大小于对照组(P<0.05),但两组SNB角、L1-SN、U1-NA、L1-MP均相当(P>0.05);观察组治疗满意度明显高于对照组(P<0.05)。结论 改良式活动矫治器矫治乳牙期前牙反颌的矫治效果显著,能有效增大SNA角及ANB角恢复牙角和软组织,改善咬合关系,提高治疗满意度。

Objective To explore curative effect of improved mobile orthodontic device on anterior crossbite at deciduous stage.Methods The paper chose 32 children with anterior crossbite in primary teeth in Department of Stomatology of our hospital from January 2021 to December 2022,and divided them into two groups randomly.Control group was treated with traditional tongue spring pads,while observation group with improved mobility appliances.Clinical effect,bite indicators,projection measurement indicators,tooth angle and soft tissue indicators,and treatment satisfaction degree were compared between two groups.Results Effective rate of treatment in observation group was significantly higher than control group(P<0.05).After treatment,OJ and OB values in observation group were lower than control group(P<0.05).After treatment,SNA angle of observation group was larger than control group,and ANB angle was smaller than control group(P< 0.05),SNB angle,L1-SN,U1-NA,and L1-MP between two groups was equivalent(P>0.05).Treatment satisfaction degree of observation group was significantly higher than control group(P<0.05).Conclusion Improved mobile orthodontic device can achieve significant effect on correcting anterior crossbite at deciduous stage,can increase SNA angle and ANB angle,restore tooth angle and soft tissue,improve occlusal relationship,and increase treatment satisfaction degree of patients effectively.