Comparative study on the microleakage performance of different pit and fissure sealants

The variable sealing ability of currently available pit and fissure sealants remains a major challenge in preventing occlusal caries in susceptible teeth. Microleakage at the tooth-sealant interface compromises retention and caries-preventive effectiveness, thereby affecting long-term clinical success. Therefore, it was of interest to compare microleakage in three pit and fissure sealants using 30 extracted permanent premolars divided into resin-based, glass ionomer and nano-silver-reinforced groups (n = 10). Following application, thermocycling and dye immersion, samples were evaluated under a stereomicroscope. Glass ionomer showed the highest microleakage, whereas the nano-silver-reinforced sealant showed the least.