广东珠江三角洲地区人下颌第一前磨牙根管解剖形态的研究
林正梅1,方溢云2,凌均棨1
Morphological characteristics of the mandibular first premolars in people from Pearl River Delta region in Guangdong provinc
LIN Zheng—mei 1,FANG Yi-yun2.LING Jun-qi1
华西口腔医学杂志 . 2008, (05): 526 -530 .