INTRODUCTION: The performance and mechanical properties of nickel-titanium (NiTi)
instruments are influenced by factors such as cross-section, flute design, raw material, and …

The fracture of endodontic instruments is a procedural problem creating a major obstacle to
normally routine therapy. With the advent of rotary nickel-titanium (NiTi) instruments this …

Introduction The purpose of this study was to compare the flexibility and cyclic fatigue
resistance of ProTaper Universal (PTU; Dentsply Tulsa Dental Specialities, Tulsa, OK) and …

Introduction The purpose of this study was to compare the cyclic fatigue resistances of
Reciproc Blue (VDW, Munich, Germany), HyFlex EDM (Coltene/Whaledent, Altstätten …

INTRODUCTION: Fractured rotary nickel-titanium (NiTi) instruments have been classified
into those that fail as a result of cyclic flexural fatigue or torsional failure or a combination of …

The purpose of this study was to test the effect of various nickel-titanium alloys on resistance
to cyclic fatigue and torsional failure. Thirty ProFile (Dentsply Tulsa Dental Specialties …

Introduction To improve the fracture resistance of nickel-titanium (NiTi) files, manufacturers
have introduced new alloys to manufacture NiTi files and developed new manufacturing …

The endodontic literature contains a plethora of studies on static and dynamic cyclic fatigue
resistance tests performed on a large array of rotary or reciprocating nickel–titanium …

The study compared changes to canal curvature and incidence of canal aberrations after
preflaring with hand K-files or with nickel-titanium rotary PathFile in S-shape Endo Training …

Instrument fracture can be an unpleasant mishap during non‐surgical root canal treatment.
While most stainless‐steel instruments appear to fail by excessive amounts of torque, the …