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1 Shaping ability of four rotary nickel-titanium instruments to prepare root canal at danger zone
Seok-Dong Choi, Myoung-Uk Jin, Ki-Ok Kim, Sung-Kyo Kim
J Korean Acad Conserv Dent.2004;29(5):446-453.   Published online 2004 September 30     DOI: http://dx.doi.org/10.5395/JKACD.2004.29.5.446
      

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