Source:http://linkedlifedata.com/resource/umls/id/C0878999
UMD: Dental units designed to cut tooth structure or remove deposits from teeth by applying abrasive microparticles (e.g., aluminum oxide) by air blast, acting like a sandblaster. These instruments consist of a built-in air compressor, pressure controllers, and handpieces that typically use interchangeable nozzles; several nozzle angles (e.g., 45, 90) are typically available. Most units also include filtering modules for particle and gas evacuation (e.g., aluminum oxide particles, waste odors). Some dental procedures can be performed with less noise, heat, and vibration than when using drills, causing less trauma and often eliminating the need for anesthetics. Dental air abrasion units are used for cavity preparation; to remove amalgam and composite materials; for tooth surface (enamel) treatment either, for removal of residue or for preparing the surface for bonding of orthodontic appliances; in cosmetic dentistry; and in other dental procedures.