Investigations of endodotic instruments in NiTi superelastic alloy

Abstract

Endodontic instruments in NiTi alloy, useful in dentistry for restorative procedures, are investigated in terms of functionality, mechanical wear and temperature dependence. The instruments are studied by dynamical mechanical thermal analysis, differential scanning calorimetry, wear tests and scanning electron microscopy. The characterisation is given as a function of the temperature in the range between -30 °C and +80 °C. Obtained results point out the best conditions to use the files inside the dental root channels minimising the risk of their occasional rupture.