Year : 2023

Volume : Volume 14

Issue : Issue 1

Address for correspondence :
Dr. Akash Azad
akash.azad@yahoo.com

Abstract

 Aims: The aims of this study were to evaluate the various properties of nickel-titanium (NiTi) endodontic rotary instruments and to assess 
the influence and clinical relevance of their metallurgy properties. Materials and Methods: Four different commercially available brands 
of NiTi endodontic rotary instruments (Protaper Gold, Hyflex CM, HyFlex EDM, Neolix Neo NiTi) are to be evaluated. These instruments 
were subjected to cyclic fatigue resistance testing in artificial metallic canals until fracture occurred. NiTi alloy properties were investigated 
by energy-dispersive spectroscopy. Field emission scanning electron microscopy analysis was conducted on new files to examine surface 
characteristics. Results: Analysis of variance testing revealed significant differences (P < 0.05) among the groups. Hyflex EDM Files presented 
the highest fatigue resistance. Conclusion and Clinical Relevance: All samples showed surface irregularities. Hyflex EDM instruments 
demonstrated the highest number of cycles to failure values in all the tested instruments. Hyflex EDM achieved the highest resistance to cyclic 
fatigue among the tested files.
 Keywords: Cyclic fatigue, Energy-dispersive spectroscopy, Field emission scanning electron microscopy, Metallurgical analysis.