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论文摘要

改良型FRⅢ型矫治器矫治安氏Ⅲ类错牙合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 FRⅢ

作者:朱远平 段银钟

Author:Zhu Yuanping, Duan Yinzhong

收稿日期:          年卷(期)页码:2016,34(4):369-369-374

期刊名称:华西口腔医学杂志

Journal Name:West China Journal of Stomatology

关键字:改良型FRⅢ型矫治器, 安氏Ⅲ类错牙合, 舌骨位置,

Key words:improved appliance FR Ⅲ, Angle class Ⅲ malocclusion, hyoid bone position,

基金项目:

中文摘要

目的 比较改良型FRⅢ型矫治器矫治儿童安氏Ⅲ类错牙合前后舌骨位置的变化。方法 选取儿童功能性安氏Ⅲ类错牙合患者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类错牙合后舌骨的位置,与其治疗前比较,H-FH、H-S、H-Ptm、Ar-H-Me增大(P结论 经改良型FRⅢ型矫治器矫治后的儿童安氏Ⅲ类错牙合患者的舌骨位置,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类错牙合患者的舌骨位置有显著影响。

英文摘要

Objective This study aims to compare the changes of hyoid bone position before and after treatment of Angle class Ⅲ malocclusion using improved appliance FR Ⅲ.Methods Forty patients with Angle class Ⅲ malocclusion were chosen and divided into two groups, namely, experimental and control. Each group had 20 patients. The young patients in the experimental group were treated using improved appliance FR Ⅲ, whereas those in the control group were treated using classic appliance FR Ⅲ. The hyoid bone position of the two groups were comparatively analyzed using an X-ray film before and after treatment.ResultsCompared with the condition before treatment, the condition after treatment showed that the hyoid bone position of young patients with Angle class Ⅲ malocclusion treated using improved appliance FR Ⅲ, H-FH, H-S, H-Ptm, and Ar-H-Me exhibited an increased angle (PConclusion Compared with the hyoid bone position before treatment, the hyoid bone position after treatment of the young patients with Angle class Ⅲ 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 class Ⅲ malocclusion treated using classic appliance FR Ⅲ 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 hyoid bone position of young patients with functional Angle class Ⅲmalocclusion.

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