Abstract
Aim: The aim of this study was to evaluate and compare the cutting efficiency using two rotary nickel–titanium file systems. Materials and Methods: Thirty-two resin endo training blocks (ETBs) were divided into two groups (16 for each group). Two groups of resin blocks were instrumented using two continuous rotary nickel–titanium instruments (NeoEndo Flexfile and Blueflex Acerfile). The cutting efficiencies of instruments were quotients of the loss weights of specimens, and the time needed for instrumentation. Results: Cutting efficiency of NeoEndo Flexfile was greater than that of Blueflex Acerfile on both resin root canals (P < 0.05). Conclusion: NeoEndo Flexfile instrument was more efficient than Blueflex Acerfile on root canals.
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