Tag Archives: nickel

Fatigue and torsional resistance of controlled memory and conventional nickel-titanium endodontic instruments

The endodontic field encountered an important breakthrough with the introduction of the nitinol alloy. It offers special mechanical properties like a shape memory effect and superelasticity. Despite of the particular properties of NiTi instruments, they could suffer

A novel approach to characterizing the type of three-factorial combined toxicity

We carried out an experiment in which outbred white rats were subjected to repeated injections with water solutions of either one of the toxics (Mn, Ni or Cr salts) in doses isoeffective in respect to the lethal