curette used in the prophylactic and periodontal care of human teeth. The working tips are fashioned in a variety of shapes and sizes, but they are always rounded at the tip in order to make subgingival cleansing less traumatic to the gingiva. Periodontal scalers feature a sharp tip to access supragingival calculus in tight embrasure spaces, thus making the curette the choice instrument for treating subgingival areas of calculus accumulation.