Influence of structure on nickel-titanium endodontic instruments failure.

  title={Influence of structure on nickel-titanium endodontic instruments failure.},
  author={Gr{\'e}goire Kuhn and Bruno Tavernier and Laurence Jordan},
  journal={Journal of endodontics},
  volume={27 8},
The purpose of this work was to investigate the process history on fracture life of nickel-titanium endodontics files. The results are based on microstructural investigations of nickel-titanium engine-driven rotary instruments based on X-ray diffraction, scanning electron microscopy, and microhardness tests. Endodontic files are very work-hardened, and there is a high density of defects in the alloy that can disturb the phase transformation. The microhardness Vickers confirmed these… CONTINUE READING

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