© An Ozonater Production 2010 Air abrasion is a drill-less technique that is being used by some dentists to remove  tooth decay and for other applications. An instrument that works like a mini sandblaster is used to spray away decay. During air abrasion, a fine stream of particles is aimed at the decayed portion of the tooth.  These particles are made of silica, aluminium oxide, or a baking soda mixture and are propelled toward the tooth surface by compressed air that runs through the dental  hand-piece. Small particles of decay on the tooth surface are removed as the stream  of particles strikes them. The particles of decay are then "suctioned" away. The only precautions needed before air abrasion are protective eye wear (to prevent  eye irritation from the spray) and sometimes the use of a rubber dam (a rubber sheet  that fits around teeth) or protective resin applied to nearby teeth and gums to protect  areas of the mouth that aren't being treated.  What Are the Advantages of Air Abrasion? Compared with the traditional drilling method, the advantages of air abrasion include  the following:  Air abrasion generates no heat, sound, pressure or vibration  Air abrasion reduces the need for anaesthesia, particularly if the cavity is shallow. Air abrasion leaves much more of the healthy tooth tissue behind. Air abrasion leaves the working area relatively dry, which is an advantage during the  placement of composite fillings. Air abrasion reduces the risk of micro-fracturing and chipping of the tooth, which  some experts believe can lead to premature restorative failures.  Air abrasion allows the dentist to treat multiple sites in the mouth during a single visit. The procedure is relatively simple and quick