Vani Prabhakar, Nageshwar Rao, Veena Hegde.
Microleakage of Endodontic temporary sealing restorative materials - an in-vitro study.
J Pak Dent Assoc Jan ;14(4):206-9.

OBJECTIVE: This in-vitro randomized study was conducted to evaluate the sealing efficacy of various endodontic temporary sealing materials. MATERIALS AND METHODS: Hundred non-carious extracted human molars were selected for this in-vitro randomized study. After endodontic access cavity preparation, the teeth were divided into 5 groups of 20 teeth each. Then each group of teeth was restored with either Zinc Oxide eugenol, Cavit, IRM, Glass Ionomer or Composite resin. The teeth were then subjected to thermal stress and immersed in basic fuschin dye for 7 days. Then the teeth were sectioned and photographed at 2x magnification. The slides were projected and microleakage measured. Mann-Whitney U-test for independent samples was used for statistical analysis. RESULTS: The composite restorations provided excellent marginal seal. Zinc Oxide eugenol, Cavit and Glass Ionomer restorations showed moderate marginal seal. The IRM restoration demonstrated greater microleakage. CONCLUSION: Composite resin appears to be the material of choice to restore endodontic access cavity preparation in this study.

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