改良型FRⅢ型矫治器矫治安氏Ⅲ类错?后舌骨位置的对比研究  

Comparing study on the hyoid bone position after treatment of class Ⅲ malocclusion using improved appliance FR Ⅲ

作　　者：朱远平[1] 段银钟[2] 

机构地区：[1]宜昌市第二人民医院,三峡大学第二人民医院口腔科,宜昌443000 [2]第四军医大学口腔医学院,西安710032

出　　处：《华西口腔医学杂志》2016年第4期369-374,共6页West China Journal of Stomatology

摘　　要：目的比较改良型FRⅢ型矫治器矫治儿童安氏Ⅲ类错前后舌骨位置的变化。方法选取儿童功能性安氏Ⅲ类错患者40例,实验组和对照组各20例,实验组病例采用改良型FRⅢ型矫治器矫治,对照组病例采用传统FRⅢ型矫治器矫治,对两组病例矫治前后的X线头影测量片上的舌骨位置进行对比分析。结果改良型FRⅢ型矫治器矫治儿童功能性安氏Ⅲ类错后舌骨的位置,与其治疗前比较,H-FH、H-S、H-Ptm、Ar-H-Me增大(P<0.01),H-MP、H-RGn减小(P<0.01);与传统FRⅢ型矫治器矫治后的儿童功能性安氏Ⅲ类错患者的舌骨位置比较,HFH、H-S、H-Ptm增大(P<0.05),Ar-H-Me角度增大(P<0.01),H-MP、H-RGn减小(P<0.05)。结论经改良型FRⅢ型矫治器矫治后的儿童安氏Ⅲ类错患者的舌骨位置,与其治疗前相比,位置更靠后、下,下颌骨与舌骨位置发生了顺时针旋转;比传统FRⅢ型矫治器矫治后下颌骨与舌骨位置发生顺时针旋转的角度更大,下颌在发生后下位移的同时,更有效地促进了舌骨位置的后上移位,对儿童功能性安氏Ⅲ类错患者的舌骨位置有显著影响。ObjectiveThis study aims to compare the changes of hyoid bone position before and after treatment of Angle classⅢ malocclusion using improved appliance FRⅢ.Methods Forty patients with Angle classⅢ malocclusion were chosen and divided into two groups, namely, experimental and control. Each group had 20 patients. The young patients in the experi-mental group were treated using improved appliance FRⅢ, whereas those in the control group were treated using classic appliance FRⅢ. The hyoid bone position of the two groups were comparatively analyzed using an X-ray film before and after treatment.Results Compared with the condition before treatment, the condition after treatment showed that the hyoid bone position of young patients with Angle classⅢ malocclusion treated using improved appliance FRⅢ, H-FH, H-S, H-Ptm, and Ar-H-Me exhibited an increased angle （P〈0.01）, whereas the hyoid bone position of those treated using H-MP and H-Gn showed a decreased angle （P〈0.01）. The hyoid bone position of young patients with Angle classⅢ malocclusion treated using classic appliance FRⅢ, H-FH, H-S, and H-Ptm had an increased angle （P〈0.05）. Moreover, the hyoid bone position of those treated using Ar-H-Me had an increased angle （P〈0.01）, and the hyoid bone position of those treated using H-MP and H-RGn had a decreased angle （P〈0.05）.Conclusion Compared with the hyoid bone position before treatment, the hyoid bone position after treatment of the young patients with Angle classⅢ malocclusion treated using improved appliance FRⅢ may move backward and downward, and the mandibular and hyoid bone position may move through clockwise rotation. The mandibular and hyoid bone position of young patients with Angle classⅢ malocclusion treated using classic appliance FRⅢ obtained a large angle by moving clockwise. The man-dibular bone moves backward and downward, thereby improving the hyoid bone in backward and upward directions. This condition makes a significant difference in treating the

关 键 词：改良型FRⅢ型矫治器 安氏Ⅲ类错 舌骨位置 

分 类 号：R783.5[医药卫生—口腔医学]