3种功能矫治器矫治骨性Ⅱ类错的临床疗效对比研究  

Comparative study of the clinical effects of three different functional appliances on the treatment of skele-tal Class Ⅱ malocclusion

作　　者：宋宇[1] 于燕玲 沈红[1] 张君[3] 

机构地区：[1]青岛大学附属青岛市市立医院口腔科,山东青岛266011 [2]青岛市口腔医院正畸科,山东青岛266003 [3]山东大学口腔医院正畸科,山东济南250012

出　　处：《华西口腔医学杂志》2008年第4期406-408,共3页West China Journal of Stomatology

摘　　要：目的探讨Twin-block、Activator和Herbst功能矫治器治疗骨性Ⅱ类错的临床疗效是否存在差异。方法选择使用Twin-block、Activator和Herbst功能矫治器矫治成功的60例骨性Ⅱ类错患者为研究对象。根据使用矫治器的不同,将其分为Twin-block组、Activator组和Herbst组,每组均为20例患者。在正畸治疗前和功能矫治完成后(第一恒磨牙建立中性关系)对每位患者拍摄X线头颅侧位片,对其治疗前后X线头影测量值进行比较。结果3组患者功能矫治器治疗后,矢状向关系上ANB角、SNB角、Go-Gn、Co-Gn、L1-MP的变化具有统计学意义,垂直向关系上N-Me、ANS-Me、S-Go、SN-MP及Co-Go的变化具有统计学意义。与Twin-block组、Activator组相比,Herbst组患者下前牙的唇倾(L1-MP)更明显,但抑制上前牙前倾(U1-SN)的效果不明显。3组患者上颌向前生长(Ptm-A)及垂直向变化(OB、N-Me、ANS-Me、S-Go、Co-Go)无明显差异。结论Twin-block、Activator和Herbst矫治器对骨性Ⅱ类错的早期矫治机制是相似的,但Herbst矫治器对下颌的矫形和下前牙的唇倾作用更明显。Objective To evaluate whether there was any difference on the clinical effects of Twin-block, Activator and Herbst appliances on the clinical effects of growing children with skeletal ClassⅡ malocclusion. Methods 60 patients with skeletal Angle Class Ⅱ malocclusion were divided into three groups （Twin-block group, Activator group, Herbst group）, 20 in each group. The patients of three groups were respectively treated by Twin- block, Activator and Herbst appliances. The patients were 10-13 years old（mean 11.6） before treatment, and were mainly with mandibular retrognathia. Data of pre- and post-treatment were measured and analyzed. Results There was statistically significance of ANB, SNB, Go-Gn, Co-Gn, L1-MP in sagittal changes, and N-Me, ANS-Me, S-Go, SN-MP, Co-Go in vertical changes after treatmen of three groups. Herbst group was more effective than Twin-block group and Activator group in the increase of L1-MP, but the effects on maxilla were not significant among them. There was no statisticall significance of Ptm-A, OB, N-Me, ANS-Me, S-Go and Co-Go between 3 groups. Conclusion Treatment effects of three different functional appliances （Twin-block, Activator and Herbst） are similar in the early treatment of skeletal Class Ⅱ malocclusion. Compared with Twin-block and Activator, Herbst has more effects on orthopedic of mandibular and lower anterior teeth.

关 键 词：功能矫治器 骨性Ⅱ类错[牙合] 头影测量 

分 类 号：R783.5[医药卫生—口腔医学]