Endodontics| Volume 93, ISSUE 6, P716-719, June 2002

Assessment of coronal microleakage in intermediately restored endodontic access cavities


      Objective. The purpose of this in vitro study was to evaluate the coronal microleakage in endodontic access cavities restored with Kalzinol (zinc oxide eugenol, De Trey, Dentsply Dental Products of India Ltd) and a zinc oxide eugenol (ZOE) intermediate restorative material at different intervals. Study Design. Restored access cavities were immersed in 2% freshly prepared methylene blue dye, and dye penetration was evaluated at 1-, 2-, 4-, and 7-day intervals. Results. ZOE cement displayed dye penetration throughout the complete depth of the restoration, reaching the pulp chamber by the second day, whereas Kalzinol produced leakage reaching the pulp chamber on the fourth day. Conclusion. Results indicated that none of the ZOE formulations tested could predictably produce a fluid-tight seal even up to the fourth day. We therefore recommend early replacement of these restorations during and after endodontic treatment to produce a better prognosis. (Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2002;93:716-9)
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