FrainkelⅢ型矫治器早期矫治儿童骨性Ⅲ类错（牙合）的临床疗效研究  

Skeletal Class m patients treated with Frainkel function regulator type III in the early and latemixed dentition

作　　者：杜雅晶 黄诗言[1] 饶南荃[1] 徐舒豪 李小兵[1] 

机构地区：[1]四川大学华西口腔医学院儿童口腔科,成都610041 [2]郑州大学第一附属医院儿童口腔科,450052

出　　处：《中华口腔医学杂志》2016年第5期257-262,共6页Chinese Journal of Stomatology

摘　　要：目的研究Frankelm（FRⅢ）型矫治器早期矫治骨性Ⅲ类错（牙合）的临床疗效，并通过对比其矫治混合牙列早、晚期骨性Ⅲ类错（牙合）的疗效差别，为FRⅢ型矫治器最佳矫治时机的选择提供参考。方法采用FRm型功能矫治器矫治45例就诊于四川大学华西口腔医学院儿童口腔科的替牙期骨性Ⅲ类错（牙合）患者，男性26例，女性19例，平均初诊年龄（7．9±1．3）岁。根据Hellman咬合发育分期分为早期组（24例）和晚期组（21例）。所有患者治疗前后均拍摄x线头颅侧位片，使用Dophin11．5软件进行头颅侧位x线片的头影测量，共选取软硬组织测量指标21个。结果45例患者治疗后SNA、ANB、NA—Apo、Wits、U1．SN、U1．NA、覆盖、uL-EP分别增加（1．O±1．9）°、（1.2±1．6）°、（2．6±4．2）°、（1．8±2．7）mm、（4．2±7．6）°、（2．6±7．5）°、（3．6±2．3）mm及（0．8±2．2）mm，OP—SN、IMPA分别减小（1．5±3．7）°和（1．4±4．2）°，与治疗前相比差异均有统计学意义（P〈0．05）。组间比较显示早期组治疗前后SNA、ANB、UL-EP的差值显著大于晚期组，晚期组IMPA、L1-NB的差值绝对值均显著大于早期组，差异均有统计学意义（P〈0．05）。结论FRⅢ型矫治器对早期骨性Ⅲ类错殆的矫治有效，可促进上颌骨发育，协调上下颌骨关系，改善侧貌；在混合牙列早期开始矫治的疗效优于混合牙列晚期。Objective To investigate the outcome of skeletal Class m patients treated with Fratnkelfunction regulator type m （FR Ⅲ）in the early mixed and late mixed dentition. Methods The samples consisted of 45 mild and moderate skeletal ClassⅢ patients（26 males, 19 females; meanage, [7.9± 1.3] years） treated with FR Ⅲ. According to Hellman＇s dental developmental stages, these samples were divided into early-treated group（n=24） and late-treated group（n=21）. Lateral cephalograms were taken at the beginning and the end of treatment. Twenty-one measurements on hard and soft tissue were included. Results After treatment, SNA, ANB, NA-Apo, Wits, U1-SN, U1-NA, Overjet, UL-EP were significantly increased （1.0±1.9）°, （1.2±1.6）°, （2.6±4.2）°, （1.8±2.7） mm, （4.2±7.6）°, （2.6±7.5）°, （3.6±2.3） mm and （0.8±2.2） mm（P〈0.05）. OP-SN and IMPA were significantly decreased （1.5±3.7）°and （1.4±4.2）°（P〈0.05）. There were significant differences in SNA, ANB, UL-EP, IMPA, L1-NB between early-treated group and late-treated group（P〈0.05）. Coneluslons FR m was suitable for the treatment of mild and moderate skeletal Class m patients. The result was better in the early-treated patients than in late-treated ones.

关 键 词：错(牙合) 安氏Ⅲ类 正畸矫正器 功能性 牙列 混合 

分 类 号：R783.5[医药卫生—口腔医学]