overhang removal

o·ver·hang re·mo·val

(ō'vĕr-hang rĕ-mū'văl)
Recontouring procedures that correct defective margins of restorations to provide a smooth surface to deter bacterial accumulation. If a minor amalgam overhang is acting as a plaque trap and preventing effective plaque control, the excess amalgam can be removed using a specialized powered instrument tip for this purpose.