前方牵引联合快速扩弓矫治不同年龄骨性Ⅲ类错的硬组织变化

目的研究年龄对于前方牵引联合快速扩弓矫治效果的影响。方法将75例3~15岁的骨性Ⅲ类错患儿分成3组,在矫治前、矫治后分别摄X线头颅侧位片,对3组X线片进行头影测量分析,并进行统计学处理。结果3个年龄组矫治后均发生了显著的硬组织变化,且这些硬组织指标在不同年龄组差异有显著性。结论年龄对于前方牵引联合快速扩弓矫治效果有较为明显的影响,矫治后上颌骨以及下颌骨的位置均与年龄有关。

Study of changes of hard tissues following application of combined rapid maxillary expansion (RME) and maxillary protraction therapy in skeletal class Ⅲ patients of different ages

Objective To study the effects of ages on combined RME and maxillary protraction therapy. Methods 75 patients with skeletal class Ⅲ malocclusion aged from 3 to 15 were selected,and divided into 3 groups. These cases were treated consecutively with RME and maxillary protraction. Lateral cephalometric radiographs were used to quantify the hard tissue changes before treatment (T1) and after treatment(T2). SPSS11.0 statistical software was used to compare the changes. Results The subjects in three groups all had significant hard tissue changes. And the obvious skeletal and dental differences were observed in the different three age groups. Conclusion It is obvious that age affects the results of RME and maxillary protraction therapy.