in vitro studyof the sealing abilityof different non-metallic root end filling materials

ABSTRACT

The study compared the in-vitro sealing ability of bone cement, composite resin, super EBA and glass ionomer cement used as a root end filling materials. A total of 200 recently extracted permanent maxillary anterior teeth were collected for this study. The teeth were filled with guttapercha and sealer using the lateral condensation technique. Following root end resection, either box shape or saucer shape cavities were prepared in the apices, these were then filled with the tested materials. The filled roots were divided into groups and stored for different time intervals, 1 day, 1 week, 1 month, 3 months and 6 months. At the end of storage time, the teeth were immersed in 2% methylene blue dye, incubated for 48 hours at 37 degree C, sectioned longitudinally and then the amount of linear dye penetration was determined. The results show that composite resin used in saucer shape cavities demonstrated the least apical micro leakage while bone cement demonstrated the highest levels of apical micro leakage. The difference was statistically significant at[p<0.05]