AN EVALUATION OF 3 MATERIALS AS BARRIERS TO CORONAL MICROLEAKAGE IN ENDODONTICALLY TREATED TEETH

Barrier Dentin Sealant, glass ionomer cement, and TERM were evaluated as possible barriers to coronal microleakage. The root canals of 70 ex tracted teeth were accessed, cleaned and shaped, and then obturated wi th gutta-percha and sealer. The teeth were divided into four groups, o ne for each barrier material evaluated and one control group. Subgroup s were stored in a humidor or immersed in artificial saliva for 7 days and then placed in methylene blue dye. Barrier Dentin Sealant and TER M groups demonstrated the lowest dye penetration measurements. The dif ference between them was not statistically different. Glass ionomer ce ment demonstrated the greatest dye penetration and was statistically d ifferent from the other two barrier materials.