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目的比较上颌垫式可摘矫治器与导弓式可摘矫治器治疗乳前牙反的临床疗效。方法选择32例3~5周岁的乳前牙反患儿,上颌正常或稍后缩伴下颌正常或轻度前突,随机分为2组。组1:16例患儿采用导弓式可摘矫治器;组2:16例患儿采用上颌垫式可摘矫治器。结果经过1~4个月的治疗,所有患儿均解除乳前牙反,采用导弓式可摘矫治器组解除反稍快于采用上颌垫式可摘矫治器组,导弓式可摘矫治器组X线头影测量值及软组织改善等指标变化更明显,效果更好。结论乳牙反应尽早矫治,尽量在3~5周岁期间进行;导弓式可摘矫治器矫治乳前牙反效果更好,同时具备机械力和肌能力的作用,在推上前牙唇倾的同时可引导下前牙舌倾,抑制下颌向前发育,能明显改善患儿侧貌;上颌垫式可摘矫治器不具备肌能力,只具备机械力,作用力仅限于上前牙,对患儿面部整体改观不太大。
Objective To compare the clinical effects of maxillary paddle removable appliance and guide arch removable appliance in treatment of ankle ankle. Methods Thirty-two children aged 3 to 5 years old with inverted ankle of the anterior teeth were selected. The maxilla was normal or slightly contracted with normal or mild mandibular protrusion, and were randomly divided into two groups. Group 1: 16 children with guide bow removable appliances; Group 2: 16 children with maxillary pad removable appliances. Results After 1 to 4 months of treatment, all children were dislocated anterior crossbite, the use of guide bow-type removable appliance group to lift anti- slightly faster than the maxillary pad-type removable appliance group, bow-type Indexable appliance group X-ray cephalometric measurements and soft tissue improvement and other indicators of change is more obvious, the effect is better. Conclusion The deciduous teeth 反 should be corrected as soon as possible, as far as possible in the 3 to 5 years of age; guide bow-type appliances can be corrected orthopedic effect of anterior teeth better, both mechanical and muscular ability, push the anterior lip At the same time, it can guide the anterior inclination of tongue and tilt, inhibit the development of mandibular forward, can significantly improve the appearance of children; maxillary pad removable appliance is not equipped with muscular ability, only with mechanical force is limited to the anterior teeth , The overall improvement of the face of children is not too big.