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Experimental study on central location ability and clearance rate of three nickel-titanium instruments for root canal retreatment
KONG Jingjing,LI Chunnian,YIN Liangliang,DAI Xinpeng
Journal of Prevention and Treatment for Stomatological Diseases . 2020, (8): 494 -498 .  DOI: 10.12016/j.issn.2096-1456.2020.08.003