Influence of etching time and bonding strategies on the microshear bond strength of self- and light-cured pit-and-fissure sealants
This study evaluated the impact of extended etching and bonding strategies on the microshear bond strength of three sealant materials. Two pit-and-fissure sealants [FluroShield, Dentsply (light-cured) and AlphaSeal, DFL (self-cured)] and one light-cured flowable composite resin (Permaflo, Ultradent) were evaluated according to different enamel etching times (15 s or 30 s) and bonding procedures (no adhesive application, application of primer/hydrophobic resin or hydrophobic resin only). Intact enamel blocks were obtained from bovine teeth and sealed via the tested protocols. After 24 h, the microshear bond strength test was performed in a universal testing machine at a crosshead speed of 0.5 mm/min. Failure modes were classified by stereomicroscopy. Data were submitted to a three-way ANOVA and to Tukey's test (α=0.05). There was no statistically significant difference (p>0.05) among the materials. Permaflo showed higher bond strength when etched for 30 s alone. Enamel overetching decreased the bond strength of the light-cured sealant. Primer/bond previous treatment improved bond performance for AlphaSeal. In conclusion, from the tested conditions, all sealant materials presented similar bond strength values in relation to bonding protocol and etching time. The flowable composite can be used as a pit-and-fissure sealant. The use of a three-step adhesive system was essential for the self-cured sealant application.
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Fundação Odontológica de Ribeirão Preto
2012
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oai:scielo:S0103-644020120005000022013-01-08Influence of etching time and bonding strategies on the microshear bond strength of self- and light-cured pit-and-fissure sealantsSouza-Junior,Eduardo JoséBorges,Boniek Castillo DutraMontes,Marcos Antônio Japiassú ResendeAlonso,Roberta Caroline BruschiAmbrosano,Glaucia Maria BoviSinhoreti,Mário Alexandre Coelho pit-and-fissure sealants enamel shear bond strength This study evaluated the impact of extended etching and bonding strategies on the microshear bond strength of three sealant materials. Two pit-and-fissure sealants [FluroShield, Dentsply (light-cured) and AlphaSeal, DFL (self-cured)] and one light-cured flowable composite resin (Permaflo, Ultradent) were evaluated according to different enamel etching times (15 s or 30 s) and bonding procedures (no adhesive application, application of primer/hydrophobic resin or hydrophobic resin only). Intact enamel blocks were obtained from bovine teeth and sealed via the tested protocols. After 24 h, the microshear bond strength test was performed in a universal testing machine at a crosshead speed of 0.5 mm/min. Failure modes were classified by stereomicroscopy. Data were submitted to a three-way ANOVA and to Tukey's test (α=0.05). There was no statistically significant difference (p>0.05) among the materials. Permaflo showed higher bond strength when etched for 30 s alone. Enamel overetching decreased the bond strength of the light-cured sealant. Primer/bond previous treatment improved bond performance for AlphaSeal. In conclusion, from the tested conditions, all sealant materials presented similar bond strength values in relation to bonding protocol and etching time. The flowable composite can be used as a pit-and-fissure sealant. The use of a three-step adhesive system was essential for the self-cured sealant application.info:eu-repo/semantics/openAccessFundação Odontológica de Ribeirão PretoBrazilian Dental Journal v.23 n.5 20122012-10-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402012000500002en10.1590/S0103-64402012000500002 |
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Souza-Junior,Eduardo José Borges,Boniek Castillo Dutra Montes,Marcos Antônio Japiassú Resende Alonso,Roberta Caroline Bruschi Ambrosano,Glaucia Maria Bovi Sinhoreti,Mário Alexandre Coelho |
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Souza-Junior,Eduardo José Borges,Boniek Castillo Dutra Montes,Marcos Antônio Japiassú Resende Alonso,Roberta Caroline Bruschi Ambrosano,Glaucia Maria Bovi Sinhoreti,Mário Alexandre Coelho Influence of etching time and bonding strategies on the microshear bond strength of self- and light-cured pit-and-fissure sealants |
author_facet |
Souza-Junior,Eduardo José Borges,Boniek Castillo Dutra Montes,Marcos Antônio Japiassú Resende Alonso,Roberta Caroline Bruschi Ambrosano,Glaucia Maria Bovi Sinhoreti,Mário Alexandre Coelho |
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Souza-Junior,Eduardo José |
title |
Influence of etching time and bonding strategies on the microshear bond strength of self- and light-cured pit-and-fissure sealants |
title_short |
Influence of etching time and bonding strategies on the microshear bond strength of self- and light-cured pit-and-fissure sealants |
title_full |
Influence of etching time and bonding strategies on the microshear bond strength of self- and light-cured pit-and-fissure sealants |
title_fullStr |
Influence of etching time and bonding strategies on the microshear bond strength of self- and light-cured pit-and-fissure sealants |
title_full_unstemmed |
Influence of etching time and bonding strategies on the microshear bond strength of self- and light-cured pit-and-fissure sealants |
title_sort |
influence of etching time and bonding strategies on the microshear bond strength of self- and light-cured pit-and-fissure sealants |
description |
This study evaluated the impact of extended etching and bonding strategies on the microshear bond strength of three sealant materials. Two pit-and-fissure sealants [FluroShield, Dentsply (light-cured) and AlphaSeal, DFL (self-cured)] and one light-cured flowable composite resin (Permaflo, Ultradent) were evaluated according to different enamel etching times (15 s or 30 s) and bonding procedures (no adhesive application, application of primer/hydrophobic resin or hydrophobic resin only). Intact enamel blocks were obtained from bovine teeth and sealed via the tested protocols. After 24 h, the microshear bond strength test was performed in a universal testing machine at a crosshead speed of 0.5 mm/min. Failure modes were classified by stereomicroscopy. Data were submitted to a three-way ANOVA and to Tukey's test (α=0.05). There was no statistically significant difference (p>0.05) among the materials. Permaflo showed higher bond strength when etched for 30 s alone. Enamel overetching decreased the bond strength of the light-cured sealant. Primer/bond previous treatment improved bond performance for AlphaSeal. In conclusion, from the tested conditions, all sealant materials presented similar bond strength values in relation to bonding protocol and etching time. The flowable composite can be used as a pit-and-fissure sealant. The use of a three-step adhesive system was essential for the self-cured sealant application. |
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Fundação Odontológica de Ribeirão Preto |
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2012 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-64402012000500002 |
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