An average occlusal clearance of 0.4 to 0.6 mm (central groove) to 1.0 to 1.3 mm (cusp tips) is generated by means of rotary diamond burs for the ultrathin occlusal veneers. A rubber dam is placed, and all areas of dentin exposure are ground with a coarse diamond rotary instrument at low speed (1500 rpm) and immediately sealed using a 3-step etch-and-rinse dentin bonding agent. The additive wax replica is scanned first for correlation (Cerec Bluecam; Sirona Dental Systems). The prepared teeth are then scanned in the same way.