MRC矫治器在替牙期前牙反的治疗效果观察  

Therapeutic effect of MRC appliance for class Ⅲ incisor relationship in mixed dentition

作　　者：许婉卿[1] 丁志雄[1] 戴秋婷 陈雅瑜[1] 

机构地区：[1]福建医科大学附属第二医院口腔科,福建泉州362000

出　　处：《白求恩医学杂志》2017年第6期699-701,共3页Journal of Bethune Medical Science

摘　　要：目的观察MRC矫治器在替牙期前牙反的治疗效果。方法选取我院收治的40例替牙期牙性、功能性前牙反患儿,均对其行MRC矫治器治疗。比较患儿矫治前及矫治1年后有效上颌长度(Co-A)、有效下颌长度(Co-Gn)、有效上下颌长度差(MXMD-DF)、上颌突距(A-Np)、下颌突距(Pog-Np)、上切牙突距(U1-A)、下切牙突距(L1-AP)、下前面高(ANSMe)、舌长、舌高变化情况,并评价患儿矫治1年后的临床效果。结果矫治1年后,Co-A、A-Np、U1-A、ANS-Me均高于矫治前(P<0.01),MXMD-DF低于矫治前(P<0.01),舌长变短、舌高增加(P<0.01)。结论在替牙期牙性、功能性前牙反患儿中使用MRC矫治器,通过舌肌功能训练,舌肌产生的力传递到上颌骨前部,使上颌向前移动,矫正前牙反。Objective To observe therapeutic effect of MRC appliance for class Ⅲ incisor relationship in mixed dentition.Methods Selecting 40 cases of class Ⅲ incisor relationship in mixed dentition in our hospital,all the patients were treated with MRC appliance. After one year＇s treatment,comparing the pre-treatment result with the after-treatment result of maxillary length（ Co-A） 、mandibular length（ Co-Gn） 、maxillary and mandibular length difference（ MXMD-DF） 、maxillary protrusion（ A-Np） 、mandibular protrusion（ Pog-Np） 、upper incisor protrusion（ U1-A） 、lower incisor protrusion（ L1-AP） 、lower anterior face height、the length and height tongue changes,and evaluating the clinical therapeutic effect. Results After one year＇s treatment,the result of Co-A、A-Np、U1-A、ANS-Me were higher than the pre-treatment result（ P〈0. 01）,MXMD-DF was lower than the pre-treatment result（ P〈0. 01）,Length tongue shortened,and height tongue increased（ P〈0. 01）. Conclusion Using MRC appliance treated class Ⅲ incisor relationship in mixed dentition and the tongue muscle produces the power transferring to maxillary and make maxillary move forward,which can effectively treat class Ⅲ incisor relationship through the tongue muscle function training.

关 键 词：MRC矫治器 替牙期 安氏Ⅲ类错 

分 类 号：R783.5[医药卫生—口腔医学]