air-powder polisher

air-pow·der pol·ish·er

(ār-pow'dĕr pol'ish-ĕr)
Air-powered device combining air and water pressure to deliver a controlled stream of abrasive through the handpiece nozzle to roughen or polish a tooth surface, depending on coarseness of agent.
Synonym(s): air abrasive, air polishing, air-powered abrasive, airbrasive.