Low-cycle fatigue of rotary NiTi endodontic instruments in hypochlorite solution.

@article{Cheung2008LowcycleFO,
  title={Low-cycle fatigue of rotary NiTi endodontic instruments in hypochlorite solution.},
  author={Gary Shun-pan Cheung and Brian W Darvell},
  journal={Dental materials : official publication of the Academy of Dental Materials},
  year={2008},
  volume={24 6},
  pages={753-9}
}
OBJECTIVE To examine the low-cycle fatigue (LCF) behaviour of NiTi rotary endodontic instruments in aqueous sodium hypochlorite solution. METHODS Four brands of NiTi rotary instrument (n=179) were subjected to a rotational-bending fatigue test at a rate of 250rpm until fracture, the instrument being immersed in 1.2% sodium hypochlorite solution. The surface strain amplitude, calculated from the curvature (from a pre-test photograph) and diameter of the fracture cross-section (from SEM… CONTINUE READING
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