Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/25348
Type: Artigo de periódico
Title: In Vitro evaluation of microleakage of different materials used as pit-and-fissure sealants
Author: Pardi, Vanessa
Sinhoreti, Mário Alexandre Coelho
Pereira, Antonio Carlos
Ambrosano, Gláucia Maria Bovi
Meneghim, Marcelo de Castro
Abstract: The aim of this study was to evaluate in vitro the marginal microleakage of different materials used as pit-and-fissure sealants (Delton, Filtek Flow, Dyract Flow and Vitremer). Fifty-six extracted sound human third molars were randomly assigned to 4 groups (n=14). After sealant placement, the teeth were thermocycled (500 cycles; 5ºC, 37ºC and 55ºC), isolated, immersed in 2% buffered methylene blue dye for 4 h, included in acrylic resin and sectioned longitudinally in a buccolingual direction. The sections were analyzed for leakage using an stereomicroscope. A 4-criteria ranked scale was used to score dye penetration. All materials exhibited dye penetration to some extension and no statistically significant difference was observed among the groups (p>0.05). In conclusion, the findings of this study showed that a flowable composite resin, a flowable compomer and resin-modified glass ionomer placed on occlusal pits and fissures had similar marginal sealing as the unfilled self-cured resin-based sealant.
O objetivo desse estudo foi avaliar in vitro a microinfiltração marginal de diferentes materiais utilizados como selantes de fissuras (Delton, Filtek Flow, Dyract Flow and Vitremer). Cinqüenta e seis terceiros molares hígidos extraídos foram divididos aleatoriamente em 4 grupos (n=14). Após a aplicação dos selantes, os dentes foram termociclados (500 ciclos com banhos entre 5ºC, 37ºC e 55ºC), isolados, imersos em azul de metileno tamponado a 2% por 4 h, incluídos em resina acrílica e seccionados longitudinalmente no sentido vestíbulo-lingual. As seções foram observadas quanto à microinfiltração em estereomicroscópio. Foram estabelecidos quatro escores para a penetração do corante. Todos os materiais exibiram algum grau de microinfiltração e não houve diferença estatisticamente significante entre os grupos (p>0,05). Concluiu-se que a resina composta flowable, o compômero e o cimento de ionômero de vidro modificado por resina apresentaram capacidade de selamento marginal semelhante à do selante resinoso autopolimerizável sem carga.
Subject: prevention
pit-and-fissure sealants
dental materials
microleakage
Editor: Fundação Odontológica de Ribeirão Preto
Rights: aberto
Identifier DOI: 10.1590/S0103-64402006000100011
Address: http://dx.doi.org/10.1590/S0103-64402006000100011
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402006000100011
Date Issue: 1-Jan-2006
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

Files in This Item:
File Description SizeFormat 
S0103-64402006000100011.pdf24.98 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.