. Endodontic instruments after torsional failure: Nanoindentation test. Scanning. 2014 Mar 9; Authors: Jamleh A, Sadr A, Nomura N, Ebihara A, Yahata Y, Hanawa T, Tagami J, Suda H Abstract This study aimed to evaluate effects of torsional loading on the mechanical properties of endodontic instruments using the nanoindentation technique. ProFile (PF; size 30, taper …