Z Prime Plus Zirconia, Alumina and Metal Primer Anlisis del Instituto Politcnico Nacional: Introduccin. Z Prime Plus significantly enhances bond strengths to Zirconia, Alumina and Metal substrates more than any other surface primer on the market due to its unique combination of two active monomers, MDP, a phosphate monomer, and BPDM, a carboxylate monomer. This combination of primers gives Z Prime Plus a synergistic effect resulting in its high chemical bond strengths. Elevate your indirect bonding with Z Prime Plus. Curion is the official importer and Canadian source for authentic BISCO products. This product is backed by the manufacturer's warranty.