cuttlefish disc

cut·tle·fish disc

a circle of paper or thin plastic coated with ground cuttlefish bone; used, when attached to a mandrel and rotated by a dental handpiece, for fine smoothing and finishing of dental materials and tooth.

cut·tle·fish disc

(kŭtĕl-fish disk)
Circle of paper or thin plastic coated with ground cuttlefish bone; used for fine smoothing and finishing of dental materials and teeth.