Phase Transformation Behavior and Resistance to Bending and Cyclic Fatigue of ProTaper Gold and ProTaper Universal Instruments.

@article{Hieawy2015PhaseTB,
  title={Phase Transformation Behavior and Resistance to Bending and Cyclic Fatigue of ProTaper Gold and ProTaper Universal Instruments.},
  author={Ahmed Hieawy and Markus P P Haapasalo and Huimin Zhou and Zhe-jun Wang and Ya Shen},
  journal={Journal of endodontics},
  year={2015},
  volume={41 7},
  pages={1134-8}
}
INTRODUCTION The purpose of this study was to compare the flexibility and cyclic fatigue resistance of ProTaper Universal (PTU; Dentsply Tulsa Dental Specialities, Tulsa, OK) and ProTaper Gold (PTG; Dentsply Tulsa Dental Specialities, Tulsa, OK) instruments in relation to their phase transformation behavior. METHODS Sizes S1, S2, F1, F2, and F3 of PTU and PTG instruments were subjected to rotational bending at a curvature of 40° and a radius of 6 mm. The number of cycles to fracture (NCF) was… CONTINUE READING

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