Em cada um dos 74 escolares de 6 a 9 anos de idade, que possuíam os quatro primeiros molares permanentes hígidos, foram aplicadas três marcas de selantes oclusais fotopolimerizáveis (Delton - Johnson & Johnson, Concise - 3M e Fluroshield - Dentisply), permanecendo um dos dentes como controle. Após 6 meses, em 67 escolares, houve um percentual maior de retenção completa para o selante Fluroshield (71,6%), seguido do Delton (68,6%) e Concise (65,7%). Nos dentes controle, 40,3% estavam cariados, enquanto no grupo do Concise houve uma eficácia preventiva de 94%, seguida do Delton (92,5%) e Fluroshield (91 %).

ln each one of the 74 schoolchildren with 6 to 9 years of old, who had the 4 first sound permanents molars. were applied 3 trade marks of occlusal sealants polimerized by ultraviolet light (Delton - Johnson & Johnson, Concise - 3M and Fluroshield - Dentisply), remaining one of the teeth as control. After 6 months, in 67 schoolchildren, there was a bigger percentage of full retention for the Fluroshield sealant (71.6%), followed by Delton (68.6%) and Concise (65.7%). The control group presented 40.3% decayed teeth, while the Concise group showed a preventive efficacy of 94%, followed by Delton (92.5%) and Fluroshield (91%).