BackgroundThe present study was aimed to evaluate and compare the apical sealing ability of two endodontic root-end filling materials namely, iRoot SP (ceramic based) and ProRoot MTA using the bacterial leakage system.Material and MethodsA total of fifty recently extracted, single rooted teeth with a single straight canal were selected for the study. The teeth were chemo mechanically prepared. The apical 3mm of the root was resected and root end cavities were prepared. The teeth were randomly divided into two groups of twenty teeth each for the experimental root end filling materials namely, iRoot SP and ProRoot MTA. A two-chamber model was constructed using pippeter tips and plastic vials. The pipetter tips with the teeth were suspended in these caps and the entire assembly was reattached to the vial. The upper chamber was seeded withEnterococcus faecalis. An Enterococci-selective broth was used in the lower chamber. Leakage was assessed for 90 days and compared using survival statistics.ResultsThe ProRoot MTA filled root end samples leaked within 30-72 days. The iRoot SP filled root end samples leaked within 51-69 days.ConclusionsUnder the parameters of this study, it can be concluded that all the tested materials showed significant apical sealing ability as root-end filling materials over a period of 90 days. iRoot SP exhibited the most effective apical sealing ability as compared to ProRoot MTA. Key words:Apical sealing ability, Bacterial leakage, iRoot SP, ProRoot MTA, Root-end filling.

The aim of the study was to evaluate and compare the apical sealing ability of mineral trioxide aggregate (MTA) Plus, Biodentine, and MTA. Materials and Methods: One forty maxillary incisors were obturated with gutta-percha and AH Plus sealer. All samples were randomly divided into 2 control and 3 experimental groups of 28 samples each. In the Group I, no apical preparation was done. The apical 3 mm of the samples in the other groups were resected, and 3 mm deep cavity was prepared and filled with gutta-percha, Biodentine, MTA Plus, and MTA, respectively. In negative control group, the entire specimen was coated with three layers of nail varnish; all samples in Groups II-V were coated with three layers of nail varnish except at the apical resected root surface. All samples were immersed in 2% rhodamine B dye for 72 h. The teeth were then sectioned longitudinally and examined under stereomicroscope. Results: MTA Plus showed less microleakage compared to Biodentine and MTA. Conclusion: MTA Plus showed a better seal than that of Biodentine and MTA.

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Objectives This clinical trial compared the efficacy of atraumatic restorative treatment (ART) sealants against resin-based sealants in terms of their retention and fissure caries preventive benefits over a period of 24 months among a section of school children in the Southern Indian state of Telangana. Materials and Methods A split mouth clinical trial employed 198 children, who received these sealants on their lower permanent first molars. Retention was assessed 6 monthly and caries annually Statistical Analysis Chi-square tests were utilized to analyze the retention rate and the incidence of dental caries between the two groups. Kaplan–Meier survival analysis plotted the cumulative survival percentage of partially, and fully retained sealants and the survival of dentin carious free pits and fissures among both the groups. A linear binary logistical regression analysis calculated the odds ratio. Results A statistical significant difference was observed in the retention rate between these sealants at every follow-up stage. The cumulative survival percentage of ART and resin sealants was calculated to be 30.9 and 37.5% by the end of 2 years. The Kaplan–Meier analysis showed no significant difference with regard to the survival of dentin carious free pits and fissures. The odds ratio for this trial was 0.747 (95% confidence interval: 0.493–1.13) Conclusion Resin sealants fared better than ART sealants in the field of retention. However, no significant differences were observed with regard to fissure caries prevention by the end of the study period.

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