Resumo

KINA, Mônica; LOPES, Guilherme Carpena  e  JUNIOR, Sylvio Monteiro. Influence of surface sealant on microleakage and staining of composite resin restorations. RPG, Rev. pós-grad. [online]. 2011, vol.18, n.3, pp. 148-153. ISSN 0104-5695.

To evaluate the microleakage and superficial staining of composite restorations after resealing, 40 cavities had been prepared for class V in 20 third molars. After the restorative procedure, the teeth were randomly selected in four groups: ISS (finish and immediate polishing), ICS (finish, immediate polishing and resealed with a surface sealant Biscover), 24hSS (finish and polishing 24 hours after restoration) and 24CS (finish and polishing 24 hours after restoration and resealed with the surface sealant Biscover). The groups were thermocycled (5.000 cycles), impermeabilized, immersed in basic fucsine 0.5% (24 hours), washed, dried and photographed to estimate the degree of superficial staining. The pictures were projected and the superficial stainings were ranked by escore and analyzed by the Kruskall Wallis test. The specimens were included in epoxic resin, sectioned, photographed, inserted and measured with the software Image Tool, and data were analyzed by ANOVA. The resealing variable showed superficial staining in all groups. Therefore, there was a decreased in marginal microleakage compared with non-resealing groups. The finishing time didn';t have any influence with the microleakage. The resealing reduced the marginal microleakage. However, this procedure increased the staining of the composite restorations.

Palavras-chave : Dental leakage; Dental Sealants; Dental materials.