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目的:观察4～6岁乳前牙重度内倾型深覆幼儿采用上颌垫舌簧矫治器与小平导板进行矫治后下颌骨生长发育的特征。方法:对30例4～6岁乳前牙重度内倾型深覆患儿采用上颌垫舌簧矫治器与小平导板进行矫治,矫治前后进行头影测量分析,进行统计学检验。结果:内倾型深覆患儿经正畸矫治后下颌后缩,下颌长度发育不足及上下面高比例失调等情况明显改善,治疗前后比较差异有显著性。结论:早期矫治重度内倾型深覆有助于患儿下颌骨水平向的生长发育.
OBJECTIVE: To observe the characteristics of mandibular growth and development in children aged 4 ~ 6 years old with severe over-infantile infantile deep overburdened palsy using maxillary otorhinolaryngology reed instrument and Kodaira plate. Methods: 30 cases of 4 ~ 6 years old premature rupture of infants with deep infants were treated with maxillary pad rectum appliance and Xiaoping plate correction, before and after correction of cephalometric analysis, statistical tests. Results: After correction of orthodontic treatment, the mandibular retrusion, the underdevelopment of mandibular length and the high proportion of upper and lower malocclusions were significantly improved in children with deep overburden. The difference was significant before and after treatment. Conclusion: Early treatment of severe deep-lying inverted type is conducive to children with mandibular horizontal growth and development.