Journal of Oral Science Research
Application of Progressive Method to Locate and Negotiate Middle Mesial Canal of Mandibular Molars in Young and Middle-aged Patients: An in Vivo Study.
YANG Li-li, ZHANG Yan, ZHAO Shi-jun, WANG Jia-kui.
Journal of Oral Science Research . 2017, (8): 881 -884 .  DOI: 10.13701/j.cnki.kqyxyj.2017.08.020