Clinical Study of a 3D Shaded Zirconia for Chairside CAD/CAM Restorations

"One investigational medical device is a new generation of a full contour zirconia restorative material (CEREC Cercon 4D/Dentsply Sirona) for chairside computer assisted design/computer assisted machines (CAD/CAM) restorations. It has an internal core of 4 mol% (4Y) zirconia transitioning to an external layer of 4/5 mol% (4/5 Y) zirconia with a three-dimensional gradient of shade from an inner chromatic layer to an external translucent layer that replicates the natural structure and appearance of a tooth. It is indicated for crowns, bridges, veneers, inlays and onlays and implant crowns Clinical Study of a 3D Shaded Zirconia for Chairside CAD/CAM Restorations The other investigational medical devices are a universal bonding agent (Prime and Bond Active/Dentsply Sirona) and dual-cure, self-adhesive resin cement (Calibra Universal~+/Dentsply Sirona). They are used in combination to deliver ceramic and zirconia restorations."