Effect From Surface Treatment of Nickel-Titanium Rotary Files on the

Fracture Resistance and Cutting Efficiency

Department of Conservative Dentistry, School of Dentistry, Dental Research Institute, Pusan National University

Yangsan, Korea

Department of Conservative Dentistry, School of Dentistry, Kyungpook National University, Daegu, Korea

Department of Conservative Dentistry, School of Dentistry, Dental Research Institute, Seoul National University,

Seoul, Korea

BO HOON KIM,1 JUNG-HONG HA,2 WOO CHEOL LEE,3 SANG-WON KWAK,1 AND HYEON-CHEOL K