Microleakage of three temporary endodontic restorations

The microleakage allowed by three temporary endodontic restorative materials was measured and evaluated. Endodontic access preparations were made in 30 noncarious, nonrestored crowns of extracted human incisors, canines, and premolar teeth. Three groups of 10 teeth each were restored with either Cavit, IRM, or TERM. Microlekage was measured by a fluid filtration technique at various time intervals. Cavit and TERM provided leakproof seals while IRM demonstrated significant microleakage at 7 days and after thermal stress.