What is the primary indicator that an instrument needs sharpening?

The primary indicator that an instrument needs sharpening is indeed the first sign of dullness, which is often recognized by a decreased ability to "grab" or effectively engage the tooth surface. When instruments become dull, they lose their sharp cutting edge, making it more difficult for the dental hygienist or dentist to perform procedures accurately and efficiently. A dull instrument requires excessive pressure to achieve the same results, which can lead to fatigue and potentially harm the tooth structure or surrounding tissue.

Recognizing the signs of dullness is crucial in maintaining effective dental hygiene practice. When the instrument no longer appears to grip the tooth effectively or requires significantly more effort to remove calculus or debris, it's an indicator that it needs to be sharpened. Maintaining sharp instruments is essential for both patient comfort and the quality of dental care provided.