Check the listing for details. Dental Bond Teeth Glue 37% Phospharic Acid Etching Etchant Gel Kit 5ML/Gel. Condition: New. Listed at 5.90 USD. Packages: 1pc Dental Acid Etch Etching Gel +2pcs Bent Tips5ml/syringe37% Phosphoric Acid This gel will effectively treat enamel and dentin, producing the necessary microretentive surface for successful bonding. The polymer thickener creates thixotropic properties, enhancing handling characteristics. The etchant rinse away cleanly and quickly, leaving no residue.Indications: Treat dentin and enamel, treating agent on dental restorative material1. Isolate tooth and then prepare the cavity in a conservative manner. Clean the entire surface with a slurry of pumice and water.2. Apply etchant using a tip, a disposable syringe tip, or disposable brush tip. Allow etchant to remain in palce for 15 seconds. etching time should be monitored with a stopwatch. Begin timing at the end of application.Option: place etchant enamel first, then proceed to cover dentin, for a slightly longer enamel etching time3. Rinse thoroughly (at least 5 seconds) to completely remover all traces of etchant.4. Remove exces moisture from the tooth and proceed with the applicaton of etching gel, waiting for 10 seconds, then rise thoroughly, then apply adhesive.