Main Factors Affecting the Final Color of Ceramic RestorationsRunning Title: Final Color of Ceramic Restorations

Color is one of the integral parts of esthetic dentistry that affects the satisfaction of patients with their restorations. Because of the complexity of the optical properties of the natural teeth, color reproduction is one of the most challenging issues which the clinicians encounter with [1] Ceramic restorations are applicable in situations with high esthetic demands. They can mimic the appearance of the adjacent natural teeth. However, suitable shade match is not obtained readily even with these restorations. It has been shown that the ability of ceramic restorations to reproduce the desirable color depends on many factors including abutment shade, cement shade and thickness, ceramic thickness, ceramic brand, and the number of firings. In the present review, these factors are discussed and the studies conducted on them are presented.