Evaluation of the mechanical properties of different nickel-titanium retreatment instruments - Weissheimer, Theodoro; Heck, Luana; Calefi, Pedro Henrique Souza; Alcalde, Murilo Priori; Rosa, Ricardo Abreu da; Vivan, Rodrigo Ricci; Duarte, Marco Antonio Hungaro; Só, Marcus Vinicius Reis (Australian Endodontic Journal, 2021)