Clearfil Alloy Primer is a pretreatment agent for conditioning metal and is used to secure the adhesive capability of resins and acrylic ester to gold, titanium, and other dental alloys. Tin-plating of the metal surfaces is no longer required because the Alloy Primer creates excellent bond strength to the metal surface. The chemical bond thus created provides ideal adhesion of composite resins to all metal alloys so that the Alloy Primer can also be used during the repair of fractured restorative materials in the dentist's office and the laboratory. Alloy Primer is simple and economical to use: apply a thin coating to the roughened or sand-blasted and cleaned metal surface and allow it to react for 5 seconds. Continue with the adhesion procedure as usual.