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本研究的目的是确定面具与扩弓治疗Ⅲ类错(牙合)中骨骼、牙齿和软组织的改变,以及检验不同年龄组的治疗效果。样本为4～13岁儿童共63例,分为3组:4～7岁15例;7～10岁32例;10～14岁16例。患儿全部为非亚洲血统的Ⅲ类错(牙合),治疗采用上颌固定螺旋扩弓矫正器,于尖牙唇侧置前方牵引钩,采用面具前牵引。分析治疗前后的头影测量片。另外选取Ⅰ类(牙合)儿童32例在4,6,8,10,12和14岁时的系列头影测量片作为
The purpose of this study was to determine changes in skeletal, dental, and soft tissue in the treatment of class III malocclusion with mastectomy and augmentation and to examine the effects of treatment in different age groups. A total of 63 children aged 4- 13 years old were divided into 3 groups: 15 cases of 4 to 7 years old, 32 cases of 7 to 10 years old and 16 cases of 10 to 14 years old. All children with non-Asian ancestry class III malocclusion, the treatment of maxillary fixed helical augmentation braces, in front of the labia minora lateral traction hook, the mask before the traction. Analysis before and after treatment of cephalometric films. In addition, 32 children with type I occlusion were selected as the series of cephalometric films at 4, 6, 8, 10, 12 and 14 years old