An In Vitro Assessment of Microleakage of Pit and Fissure Sealants and Restorative Materials Using Dye Penetration Method

Aim: The study focused to determine the microleakage of various materials using the dye penetration method. Materials and Methods: The study samples consisted of 45 healthy human mandibular premolar teeth removed for orthodontic therapy without caries. The samples were categorized into three groups of 15 each. All the samples were etched for 20 seconds with 37% phosphoric acid gel before being sealed with a glass ionomer cement (GIC) sealant (Fuji—VII GIC), light-cure glass ionomer composite cement (Prevest Fusion I), or flowable nanocomposite sealants (Prevest Fusion Flo), respectively. Every sample were thermocycled and immersed for one day in methylene blue (5%) solution to dye diffusion between the gaps present among the tooth and restoration. The teeth were sectioned and analyzed using image analysis software beneath a stereomicroscope at 10x magnification. Results: The marginal microleakage was found lowest in flowable nanocomposites (1.06 ± 0.98), then light-cure glass ionomer composite cement (2.44 ± 1.42), and GIC (4.07 ± 1.54). A statistically significant variance was noted. Conclusion: Current investigation evaluated that reduced marginal leakage was seen in flowable nanocomposites when compared to other two groups.