Corresponding author
Ricardo Abreu da Rosa
Federal University of Rio Grande do Sul, Conservative Department
2492 Ramiro Barcelos Street
Porto Alegre, RS, BR 90040-060
E-mail: rabreudarosa@yahoo.com.br
Phone: (+55) 55 9927-5625
Keywords: Endodontics. Cyclic fatigue. Torsional resistance.
NiTi instruments.
Research Highlights: Scanning eletron microscopy evaluation of
different endodontic rotary file and fatigue resistance tests.