During the past sixty years, zirconia as a restoration have been successfully introduced into the clinical and laboratory work to fabricate both fixed and removable dental prostheses. Furthermore, the rapid advancement in computer-aided/computer-aided manufacturing (CAD/CAM) systems has also contributed in the success of this material. Zirconia represent one of the best choices in dental materials from the esthetic point of view when compared to metallic and ceramo-metallic restorations. This is because of its relatively high strength and fracture resistance in addition to the high stability in color and biocompatibility by its high hardness which allows it to maintain high surface polish and prevent plaque retention. This review illustrate the different types of zirconia and its use in crown and bridge restorations.