功能矫治器治疗安氏Ⅱ类1分类下颌后缩的骨牙效果  

Cephalometric analysis of Class Ⅱ division 1 malocclusion before and after the treatment of functional appliance

作　　者：方义玉[1] 李江宁[1] 陈阳萍[1] 陈扬熙[1] 

机构地区：[1]四川大学华西口腔医学院口腔正畸科,成都610041

出　　处：《现代口腔医学杂志》2001年第6期451-452,共2页Journal of Modern Stomatology

摘　　要：目的　分析牙及骨的改变量对改正Ⅱ类错牙合所起的作用。方法　选用 2 8例生长发育高峰期Ⅱ类 1分类错牙合患者 ,用Activator、Frankel等功能矫治器将其矫治至中性或中性偏近中 ,用Pancherz法分析头侧位片上牙和骨的改变。结果　下颌骨长度增加 ,上切牙内收 ;前牙覆盖减小 ,其中骨因素占 70 % ,牙因素占 3 0 % ;磨牙关系改善 ,其中骨因素占 96% ,牙因素占 4 %。结论　功能矫治器矫治Ⅱ类 1分类错牙合可刺激髁突和关节窝的改建 ,促进下颌骨的生长 ,内收上切牙 ;其中 。Objective To evaluate the changes of teeth and skeletal in the correction of Class Ⅱ malclusion.Methods 28 cases of developing class Ⅱ division 1 malocclusion were selected and treate with functional appliances,e.g.Activator,Frankel.After the treatment,the molar relationship was corrected to Class Ⅰ or beginning Class Ⅲ.The changes of teeth and skeletal were analyzed by Pancherz method.Results The length of mandible increased,maxillary incisors was retruded and overjet of the incisors decreased.70% of these changes were caused by the changes of skeletal,30% caused by the changes of teeth.Molar relationship was improved.Conclusion Functional appliances stimulate the modification of the mandibular condyle and fossa,promote the development of the mandible,retrude the maxillary incisor.Among the changes,modification of skeletal plays the most important role.

关 键 词：功能矫治器 头影测量 治疗 下颌后缩 骨牙效果 Ⅱ类1分类 错HE 

分 类 号：R783.5[医药卫生—口腔医学]