Evaluation of Microleakage of Four Root Canal Sealers – A Fluorescent Microscope Study

Success or failure of endodontic treatment is directly affected by factors such as persistence of bacteria due to inadequate canal disinfection, inadequate or overextensions of root filling materials, improper coronal seal, untreated canals, iatrogenic procedural errors, and complications of instrumentation. 1 Microleakage is one of the most common reasons for failure in endodontics which could be either coronal or apical microleakage. Apical leakage is the entry of micro-organisms or leakage of tissue fluids into the canal space. This study was designed to evaluate the microleakage of tricalcium silicate based sealer -'BioRoot RCS' in comparison with three conventional root canal sealers like zinc oxide eugenol based sealer, calcium hydroxide based sealer -Seal Apex, resin based sealer -AH Plus, by Rhodamine B dye penetration technique using fluorescent microscopy.