In Vitro evaluation of microleakage of different materials used as pit-and-fissure sealants

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; 5 degrees C, 37 degrees C and 55 degrees C), 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.

Microleakage and penetration depth of different fissure sealant materials after cyclic thermo-mechanic and brushing simulation

“…The microleakage of the materials 16,17) 0=no dye penetration 1=dye penetration limited to the outer half of the sealant 2=dye penetration extending to the inner half of the sealant 3=dye penetration extending to the underlying fissure 2. The penetration ability of the materials 18) 1) Sealant penetrated to 1/3 the total length of the fissures 2) Sealant penetrated to 1/2 the total length of the fissures 3) Sealant penetrated to total length of the fissures The data were analyzed with Kruskal-Wallis and Mann-Whitney U post-hoc tests at a significance level of 0.05.…”

Análise comparativa entre selante resinoso e selante ionomérico por microscópio eletrônico de varredura

“…Autores concluíram que a resina composta fluída, o compômero e o cimento de ionômero de vidro modificado por resina apresentam capacidade de selamento marginal semelhante à do selante resinoso autopolimerizável sem carga 19 .…”

“…No presente estudo, observou-se, através de análise estatística, uma diferença significativa entre as profundidades de penetração do selante fotopolimerizável e do cimento de ionômero de vidro, diferentemente de Pardi et al 19 e Chen et al 10 , que concluíram, em seus estudos, não haver diferença significativa entre estes materiais utilizados como selantes.…”

“…O diagnóstico da doença cárie é um pré-requisito essencial para a aplicação de selantes, sendo que, em cáries ocultas, as fossas e fissuras podem ser inadvertidamente seladas, quando um diagnóstico preciso não tiver sido realizado 19 .…”

Selamento de fossas e fissuras após 6 meses com diferentes materiais: Resinoso X Ionómerico

“…6.2 METODOLOGIA APLICADA É possível encontrar na literatura diversos trabalhos que comparam selantes à base de resina e ionômero de vidro entre si (ALONSO et al, 2005;LOBO et al, 2005;KANTOVITZ et al, 2006;PARDI et al, 2006;OLIVEIRA et al, 2008;KANTOVITZ et al, 2009;BASEGGIO et al, 2010;YENGOPAL, 2011;ULUSU et al, 2012). O sucesso dos selantes à base de resina está relacionado de forma direta à sua retenção (RIPA, 1993;MORPHIS;TOUMBA, 1998;AHOVUO-SALORANTA et al, 2008;BASEGGIO et al, 2010;KÜHNISCH et al, 2012).…”