10 dental implants; implants for face and jaw surgery; dental superstructures, namely, crowns, bridges, prostheses and parts and fittings therefor; surgical implantation instruments for use in performing dental surgery and face and jaw surgery; artificial joints; and substitute materials of metal, plastic, ceramic, or non-living organic material for tissues of the human body, in the form of granules, powders, pastes, gels, liquids or mixtures thereof, or in the form of molded pieces