CERX Z-15 porcelain system has been developed especially for the metal free restoration based on extra strong zirconium oxide frameworks according to the latest research in porcelain knowledge. In combination with these substructures it offers unlimited possibilities in the reproduction of life like appearance for crowns and bridge works. Opaque liners ensure the bonding to the zirconium frameworks, eliminate the whiteness issue and provide a patient specific coloration. In addition CERX Z-15 offers the light-optical aspects of natural teeth because of the micro fine particle structure of the opalescent Incisal and Translucent powders.