study was to evaluate the effect of finish line design and cement space thickness on the marginal accuracy and fracture resistance of monolithic zirconia crowns. Thirty crowns were fabricated from translucent zirconia (inCoris TZI) using Cerec in-Lab system, and divided into three main groups (10 each) according to the finish line type of the die (knife-edge, chamfer, and shoulder). Every group was divided into two subgroups (5 each) according to cement
wide area of fields, since the beginning of the current century, with the advance in the construction of the 3D printing machines, such as: industrial design, architecture, automotive, engineering and construction (AEC), dental and medical industries, geographic information systems, civil engineering, jewelry, footwear [9] and so