Opotow Temporary Cement Zinc Oxide and Eugenol, Complete Package: 35 GmZinc oxide, non eugenol formulation Indicated for bridgework, splints, and porcelain fused to metal crowns and bridges Does not harden Made for semi permanent time framing Opotow Temporary Cement is a non hardening cement designed for trial cementation of bridgework, splints, and porcelain fused to metal crowns and bridges whenever a lengthy assessment is necessary. Each Complete Kit contains an accelerator, base, mixing pad, and tube keys.