When used with the PERIO-FLOW®-capable devices and nozzles, the AIR-FLOW® PERIO powder's extra-fine grains remove harmful biofilm and bacteria in subgingival pockets of up to 5mm. Made from glycine rather than sodium bicarbonate, AIR-FLOW® PERIO powder is gentle on the tooth surface, making the air polishing experience more comfortable for the patient during supragingival procedures as well.