TY - West China Journal of Stomatology A1 - Yuan Zhiyao, Zou Xihong, Dai Linlin, Ao Huizhi, Li Houxuan. T1 - Clinical analysis on the root fracture of the maxillary first molar Y1 - 2021-10-01 JF - West China Journal of Stomatology JO - West China Journal of Stomatology SP - 555 EP - 559 VL - 39 IS - 5 UR - https://www.hxkqyxzz.net N1 - 10.7518/hxkq.2021.05.009 ER -