- Etch-37 is a 37% semi-gel phosphoric acid etchant with benzalkonium chloride (bac) and designed for etching tooth structure prior to bonding. - 37% phosphoric acid etchant with benzalkonium chloride etch-37 with bac is a 37% phosphoric acid semi-gel etchant that is effective at quickly etching enamel and dentin. - Etch-37 with bac is polymer-thickened and effectively removes the smear layer, etches and demineralizes enamel and dentin. - It is easily manipulated into small areas such as endodontically treated root canals and undercuts. - This makes it more versatile than some thicker gel etchants for etching all restorative surfaces. - Published research proves that bisco etchants produce higher bond strengths to (wet or dry) dentin1 and enamel. - Rinses away cleanly and quickly leaving no residue to interfere with bonding Blue in color for easy visualization and contrast creates micro retentive surface characteristics that are necessary for successful bonding. - Etch-37 with bac: 37% semi-gel phosphoric acid: bottle (30gr). **For further product information, please contact Chat Support**