Researchers test nickel-titanium file safety limits
With endodontic files, reciprocating mechanisms are claimed to improve cyclic resistance and fatigue by reversing the rotation direction for short periods of time. It is also claimed that this helps avoid torsional failure. Researchers wanted to see if these claims held up for two nickel-titanium files. They compared the safety limits and torsional resistances of two files, the WaveOne Gold and the WaveOne (both Dentsply Sirona Endodontics) while using the


