[Variant root cannal system of mandibular first premolar and its strategy of diagnosis and treatment].
Jian-wei
JW
Liu
Zheng-mei
ZM
Lin
Yi-yun
YY
Fang
D001641:Bicuspid; D003786:Dental Pulp Cavity / Q000473:pathology*; D006801:Humans; D008334:Mandible; D012390:Root Canal Therapy