CHRİSTOPH MATTHİAS SCHOPPMEİER, Lİ SUN, MALİN JANSON, FLORİAN KONSTANTİN WİTTİCH, ANNA GRETA BARBE
European Endodontic Journal - 2025;10(4):333-342
Objective: The flexibility and fracture resistance of nickel-titanium (NiTi) files have revolutionised root canal preparation, but file fractures caused by cyclic fatigue or torsional failure are challenging. Thermal pretreatments aim to improve fatigue resistance. This study compared the cyclic fatigue resistance (CFR) of four novel reciprocating NiTi file systems with low- versus high-temperature thermal modification under simulated clinical conditions.