Even though the GIC has undergone many advances, its chemistry is fundamentally different from that of modern resin based composite direct filling products, which feature a silica or glass particle filled polymer matrix that enhances repair retention. When the restoration is etched or air abraded after the tooth has been conditioned with an adhesive resin and etched, retention becomes "micromechanical," ensuring the resin cement's high tensile strength. Cementation of the extraoral fabricated restoration is very important for the longevity of the restoration. The bond strength of resin cement to ceramic and fibre post is better than conventional cements. This article discusses about the various types of resin cements and there uses for luting indirect restorations such crowns, veneers, inlays, and onlays, etc.