Resina fluida autoadhesiva utilizada como sellante de fosas y fisuras. Estudio de microinfiltración

Abstract

AimTo evaluate the sealing ability of a self-adhesive flowable composite-resin (Fusio Liquid Dentin, Pentron Clinical) with different conditioning treatments of the enamel surface used as a fissure sealant. Materials and Method140 recently extracted human third molars were selected and randomly divided into four groups (n=35). Each group received an enamel conditioning treatment and a sealant application. The following groups were established: Group 1, acid etching and sealant application (Clinpro, 3M ESPE); Group 2, acid etching and self-adhesive flowable composite-resin (Fusio Liquid Dentin, Pentron Clinical); Group 3, self-adhesive flowable composite-resin; Group 4, sandblasting and self-adhesive flowable compositeresin. Sealed teeth were thermocycled (500 cycles, 5-55°C) and immersed in ammoniacal silver nitrate solution for 24h (ph=14). After that, the teeth were immersed in radiographic developer solution (GBX, Kodak) for 8h. Then, the teeth were vertically sectioned to obtain two slides each that were observed under magnification (4x) and digitally analyzed to assess microleakage and sealant penetration. Results were statistically analyzed (ANOVA, Dunnett, p<0.05). ResultsMicroleakage of Group 1 (13.18±9.25%) was significantly lower than groups 2, 3 and 4 (p<0.05). Group 1 had the highest sealant penetration mean (98.92±2.77%). ConclusionFusio Liquid Dentin had a worse sealing ability than Clinpro irrespective of their enamel conditioning treatment when used as a fissure sealant. Among Fusio's groups, acid etching was the best enamel surface conditioning treatment.