Correlation of dentinal penetration and microleakage of bioceramic with calcium hydroxide and resin based root canal...

The role of Root canal sealers is a very crucial role in endodontic therapy by forming a hermetic seal within the canal, filling minor voids between the dentinal wall and gutta-percha to prevent microleakage from bacterial infiltration from the oral cavity and tissues of periapical areas.

This study aims to compare and evaluate the depth of penetration and microleakage of AH Plus, Bio-C, Sealapex, and MTA Fillapex using a confocal laser scanning microscope (CLSM).

This study evaluated sealer penetration and microleakage in 170 single-rooted teeth divided into two groups (n = 85 each). Group A assessed sealer penetration of Group I: MTA Fillapex, Group II: Selapex, Group III: Bio-C, Group IV: AH Plus, and Group V: Control group (obturated without sealer) using 0.1% Rhodamine B-labeled sealers, and CLSM was done at 3 mm and 5 mm from the apex. Group B measured microleakage in the above-mentioned 5 groups, after 7-day immersion of samples in 0.1% Rhodamine B and evaluating dye penetration longitudinally from the cemento-dentinal junction.

Data were analyzed using paired t-tests, Tukey Honestly Significant Difference, ANOVA, and Pearson's correlation as statistical tools.

Group III has demonstrated the highest sealer penetration at both 3 mm and 5 mm levels, and exhibits the best microleakage resistance. However, minimum penetration has been shown by Group I and Group II at 3 mm and 5 mm, respectively. Group II has shown the highest microleakage among the sealers.

Bio-C sealer performed best, whereas Sealapex has shown the worst both in sealer penetration and microleakage.