摘要
Abstract
Objective To evaluate the curative effect in skeletal Class Ⅲ children patients following the facemask appliance. Methods The 19 patients treated with facemask appliance in the second hospital affiliated Xinjiang Medical University during 2010 to 2013 were selected. The lateral cephalometric radiographs and models of SNA,SNB,ANB,SND,Wits value,U1- L1,FMA,SN- MP,SN- PP, U1- SN,IMPA,NLA,ULP,LLP,upper facial height,lower facial height,the models of maxillary dental arch width (forepart,midpiece,posterior part) were compared before treatment and after treatment. Results The 19 patients had received for six months, and SNA,ANB,Wits value,U1- L1,FMA,SN- MP,SN- PP, upper facial height,lower facial height,IMPA,NLA,LLP,the modelsof maxillary dental posterior arch width,the length of the mandibular were significantly different before and after treatment ( P<0.05),but SND,U1- SN,SNB,ULP,forepart and midpiece of the models had no significant difference before and after treatment ( P>0.05). Conclusion Protraction with facemask appliance can stimulate growth of maxillary bone of the patients, and makes the maxillary and mandible rotate clockwise, but it makes little control of mandible growth.关键词
前方牵引/面具式矫治器/儿童骨性Ⅲ类错牙合Key words
maxillary protraction/facemask appliance/children skeletal class Ⅲ malocclusion分类
医药卫生
