Dental Which of the following methods is not an acceptable way to determine instrument sharpness? A Evaluation of the cutting edge during scaling procedures B Evaluation of light reflection from the cutting edge when observed under magnification C Evaluation of the cutting edge against plastic testing stick D Evaluation of the cutting edge against the clinicians finger nail 💡 Explanation Which of the following methods is not an acceptable way to determine instrument sharpness? ✓ Correct Answer: D. Evaluation of the cutting edge against the clinicians finger nail