Abstract: A periodontal scaler is provided, comprising an arcuate shank and an arcuate blade. The arcuate blade being designed to conform to the roughly cylindrical surfaces found on the roots of teeth. This conforming feature of the instrument's blade increases its cleaning efficiency by maximizing contact between the blade's surface and the root, and guiding the instrument along the root by holding its convex edges within the concave shape of the blade.

Abstract: An area-specific dental instrument is provided, which comprises an arcuate S-shaped shank and an arcuate blade further comprising a sharpened convex surface. This instrument can be capable of cleaning plaque and calculus from the lingual surfaces of anterior teeth and concave surfaces between teeth at the cemento-enamel junction.