Modes of failure of ProTaper nickel-titanium rotary instruments after clinical use.

@article{Wei2007ModesOF,
  title={Modes of failure of ProTaper nickel-titanium rotary instruments after clinical use.},
  author={Xi Wei and Jun-qi Ling and J. H. Jiang and Xiangya Huang and Lu Liu},
  journal={Journal of endodontics},
  year={2007},
  volume={33 3},
  pages={276-9}
}
This study was to investigate the mode of fracture of ProTaper rotary instruments after clinical use and to compare stereomicroscopy with scanning electron microscopy (SEM) to determine which is the better method for establishing the mode of material failure. In all, 100 fractured ProTaper instruments were examined under stereomicroscope for the presence of plastic deformation along the cutting edge near the fracture site. Fractographic and longitudinal examinations were carried out at high… CONTINUE READING

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