Background: Sealant application is a safe and effective way to prevent dental caries. The success of sealant application depends on the good isolation, patient corporation, and the decrease step for the application of sealant.
Aim: This study aims to evaluate and compare three different pit and fissure sealants to check their effectiveness for sealing ability and microleakage.
Materials and Method: 30 freshly extracted maxillary premolars extracted due to orthodontic purposes were selected to be sealed with composite based pits and fissures sealant (Helioseal F and Ivoclar Vivadent), resin-based glass ionomer (Ionoseal, Voco), self-adhering flowable composite (Dyad Flow, Kerr); respectively group I, II, III (n=10). All specimens were thermocycled at 50C-550C for 500 cycles with a dwell time of 30 seconds. Then immersed in methylene blue dye solution (24Hr) and longitudinally sectioned in a buccolingual direction to get a 1.5 mm thick specimen.
The percentage of microleakage was recorded according to Colley et al's(1990) Scoring criteria under a stereomicroscope at 20X magnification as follows: Score 0: No marginal penetration by the dye. Score 1: Marginal penetration of dye along with the enamel sealant interface. Score 2: Dye penetration to a depth of sealant. Data were recorded and analyzed statistically.
Statistical analysis used: The frequencies of different microleakage scores were compared across different study groups using the chi-square test. The descriptive of the microleakage score were compared across groups using the Kruskal Wallis test & Mann Whitney U test (for post hoc pairwise comparison).
Results: Group III (self-adhesive composite) shows the least microleakage score.
Conclusions: Self-adhering flowable composite could be used in place of the composite-based pit and fissure sealants.