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Repair bond strength of bulk fill composites after different adhesion protocols

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Repair bond strength of bulk fill composites after different adhesion protocols

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dc.contributor.author de Medeiros, Thiago-Clístines es
dc.contributor.author de Lima, Mariana-Rodrigues es
dc.contributor.author Bessa, Stephany-Cimarosti-Figueiredo es
dc.contributor.author Araujo, Diana Ferreira Gadelha de es
dc.contributor.author Galvão, Marília-Regalado es
dc.date.accessioned 2020-02-04T13:25:52Z
dc.date.available 2020-02-04T13:25:52Z
dc.date.issued 2019 es
dc.identifier.citation de Medeiros, Thiago-Clístines ; de Lima, Mariana-Rodrigues ; Bessa, Stephany-Cimarosti-Figueiredo ; Araujo, Diana Ferreira Gadelha de ; Galvão, Marília-Regalado. Repair bond strength of bulk fill composites after different adhesion protocols. En: Journal of Clinical and Experimental Dentistry, 11 11 2019: 1000-1005 es
dc.identifier.uri https://hdl.handle.net/10550/72876
dc.description.abstract Repairs in composite resin restorations are common procedures in clinical practice. Many surface treatment options have been proposed to improve the adhesion between the old and new composite. The objective of this study was to evaluate the microtensile bond strength of repairs performed on aged bulk fill and conventional composites after different adhesion protocols. First, 84 specimens (8x8x4 mm3) of a microhybrid composite and a high-viscosity bulk fill composite were prepared and aged. Afterward, they received a mechanical surface treatment by means of abrasion with a diamond bur, followed by division into six groups according to the adhesion protocol employed: PSA - etching with 35% phosphoric acid + silane + etch-and-rinse adhesive; SA - silane + etch-and-rinse adhesive; PA - etching with 35% phosphoric acid + etch-and-rinse adhesive; A - etch-and-rinse adhesive; PU - 35% phosphoric acid + universal adhesive; and U - universal adhesive. The repairs were performed with a microhybrid composite. Repaired resin blocks were cut into sticks (8x1x1 mm3) and submitted to a microtensile test. Fractured specimens were evaluated to determine the failure pattern (adhesive or cohesive). Data were analyzed by two-way ANOVA. No statistically significant differences were found in bond strength values among different adhesion protocols and composite types. The repair bond strength of a bulk fill composite was similar to that found in a conventional composite, with no distinction among adhesion protocols. es
dc.title Repair bond strength of bulk fill composites after different adhesion protocols es
dc.type journal article es_ES
dc.subject.unesco UNESCO::CIENCIAS MÉDICAS es
dc.identifier.doi 10.4317/jced.56129 es
dc.type.hasVersion VoR es_ES

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