MicroEtcher IIA intraoral sandblaster from Zest Dental …
What sets the MicroEtcher IIA apart from the PrepStart H 2 O is the variety of media you can use in it. The PrepStart H 2 O is made to be used with 27- or 50-micron aluminum oxide only. The MicroEtcher IIA can be used with all sizes of aluminum oxide, sodium bicarbonate, SA-85 (which removes excess resin without enamel erosion), or glass beads.