Abstract: Objectives: The aim of the present study was to investigate the caries-preventive effect of sealants produced with a high-viscosity glass-ionomer with an elevated powder-liquid ratio (ART), of having energy added to this glass-ionomer, and that of glass-carbomer, in comparison to that of resin composite sealants.Methods: The randomized controlled trial covered 407 children, with a mean age of 8 years. At a school compound three dentists placed sealants in pits and fissures of high caries-risk children. Evaluation by two independent evaluators was conducted after 0.5, 1 and 2 years. The Kaplan–Meier survival method, ANOVA and t-test were used in analyzing the data.Results: 1352 first permanent molars were sealed. 6.6% of children and 6.8% of sealants dropped out within 2 years. …
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