COMPARATIVE-STUDY OF THE SEALING ABILITY OF LIGHT-CURED VERSUS CHEMICALLY CURED MATERIALS PLACED INTO FURCATION PERFORATIONS

Two light-cured materials, Vitrebond and Prisma VLC Dycal, were compar ed with two chemically cured materials, Ketac Fil and Dycal, for abili ty to seal furcation perforations. Access openings and furcation perfo rations were prepared in 60 teeth and randomly divided into four equal groups. Furcation perforations were repaired with each of the tested materials, and the access openings were filled with composite resin. A fter teeth were immersed in 2% erythrocin B dye solution for 10 days, they were sectioned longitudinally and dye penetration was measured. T he light-cured materials allowed statistically significant less dye le akage than did the chemically cured materials.