Description: Feature: 1. This product is one kind of orthodontic direct bonding system resin with aromatic bis dimethyl acrylate resin as its main material. 2. As a new-type orthodontic direct bonding system, it is convenient to use with little waste,easy to handle independently and has a favorable clinical bonding strength. 3. It consists of primer and paste with acid etchant, spatulas and small brusher as its accessories. Preparation: Clean tooth enamel surface,eliminate tooth contamination,rinse then isolate tooth and blow-dry. Etching: Etching the enamel of the tooth with acid etchant for 50 or 60 sec. Rinse and dry with clean air. If the enamel does not have a chalky appearance, pls. repeat the process; Brushing: apply a thin layer of the primer over the etched enamel with the brusher; Bonding: apply another thin layer of the paste to seal the edges, adjust the bracket within 20 sec, give pressure for 5 to 10 secand remove the excessive primer and paste after 40 to 60 sec, then do orthodontic procedures followed 5-min curing. Package includes: 1 x black syringes (3.5g) 1 x primer bottle (3ml) 20 x Brushes