Before revision: Torsional fatigue — Torsional failure happens when the tip of a file is locked but its shank is being rotated either manually or by a handpiece to the point that exceeds the elastic limit of the alloy.Martin, B., et al."
After revision: Torsional fatigue — Torsional failure happens when the tip of a file is locked but its shank is being rotated either manually or by a handpiece to the point that exceeds the elastic limit of the alloy.Martin, B.,