Dental What is torsional limit? A Amount of apical pressure that can be applied to a file to the point of breakage B The beginning of plastic deformation of the instrument C Amount of rotational torque that can be applied to a “locked” instrument to the point of breakage D Amount of force necessary so that a file does not return to its original shape upon unloading of the force 💡 Explanation What is torsional limit? ✓ Correct Answer: C. Amount of rotational torque that can be applied to a “locked” instrument to the point of breakage