三种根管预备方法对直根管根尖封闭性的影响

池学谦;王振明;冯雅君;侯逢春;陈惠珍;张金廷

WANG Jin-bao;NIE Fa-chuan;YI Bin;GU Jian-teng;CUI Jian;LIN Jiang-kai

CHI Xue-qian;WANG Zhen-ming;FENG Ya-jun;HOU Feng-chun;CHEN Hui-zhen;ZHANG Jin-ting

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