安氏Ⅱ类1分类拔牙病例正畸治疗后后牙关系的稳定性研究

刘妍,许天民,林久祥

Stability of Molar Relationship after Orthodontic Treatment in ClassⅡDivision 1 Malocclusions Treated by Extraction　

LIU Yan,XUTian-min,LINJiu-xiang

华西口腔医学杂志 . 2004, (04): 298 -301 .