Primer A part of the original 4th Generation adhesive, with a comprehensive ability to bond to materials such as dentin, enamel, new or old composite, precious, semi-precious and non-precious casting alloys, silane-treated porcelain and new or old amalgam. Features hydrophilic properties of its primers (BPDM), which is an extremely effective to wetting agents and co-polymerising monomers. Wetting of the dentine, dentine tubules and interaction with the dentine substrate readily occurs when the smear layer is removed, creating a sealed dentine surface ready to adhere to restorative materials.