埋伏上颌中切牙牵引萌出前、后牙根形态的变化

董宏伟，,许世梃,俞殷隽，梁勤，

Root shape changes of impacted upper central incisor before and after orthodontic traction

DONG Hong-wei, LIANG Qin,².

上海口腔医学 . 2016, (1): 72 -76 .