The provisional restoration is important in determine the success of the therapy. The provisional restoration protects the pulp and the dentin, and is used for diagnostic purposes. Sometimes provisional restoration can stay in the oral cavity for a long period. Through this time, the abutments must get the best biological and mechanical defense. The cement should have good mechanical properties, low solubility and good adhesion. The finishing line is a place prone to caries development due to the existence of a potential gap between the provisional restoration and the tooth.