Analysis of caries and its risk factors of the first permanent molar among primary school students in Pudong, Shanghai and Lichuan, Jiangxi Province

SU Hong- ru， QIAN Wen-hao， ZHANG Yan.

Shanghai Journal of Stomatology . 2018, (3): 293 -297 . DOI: 10.19439/j.sjos.2018.03.016