论文部分内容阅读
目的:了解恒牙早期安氏Ⅲ类患者使用功能矫治器FRⅢ与单纯固定矫治的异同。方法:选择恒牙早期安氏Ⅲ类患者60例,分别采用单纯固定矫治和FRⅢ双期矫治方法进行治疗,将治疗前后X线头颅侧位片进行比较研究。结果:两组治疗前后的颌面形态有明显不同,FRⅢ组在改善上下颌骨不调方面比单纯固定组治疗更具优势,上颌骨获得了更明显的生长。结论:单纯固定组更多的是靠牙齿的代偿来纠正反而FRⅢ组骨性关系趋于协调,牙齿代偿较轻上下颌骨的位置关系得到了更大限度的改善。
OBJECTIVE: To understand the similarities and differences between FR Ⅲ patients with permanent fixation and orthodontic appliances treated with Class Ⅲ early Angle permanent dentition. Methods: Sixty patients with early Class Ⅲ malocclusion of type Ⅲ were selected and treated with simple fixed appliance and FR Ⅲ double - phase appliance respectively. The X - ray cephalograms were compared before and after treatment. Results: The maxillofacial morphology of the two groups were obviously different before and after treatment. The FR Ⅲ group had more advantages than the fixed group in improving the maxillary and mandibular distraction, and the maxillary obtained more obvious growth. Conclusion: In the simple fixation group, the orthodontic treatment is more dependent on the tooth compensation, while the bony relationship in the FR Ⅲ group tends to be more harmonious. The dental compensation has a greater improvement in the positional relationship between the maxilla and the mandible.