Souza, Rodrigo O.A. [UNESP]Lombardo, Geraldo H.L. [UNESP]Michida, Silvia M.A. [UNESP]Galhano, Graziela [UNESP]Bottino, Marco Antônio [UNESP]Valandro, Luiz Felipe [UNESP]2014-05-272014-05-272007-12-01Journal of Adhesive Dentistry, v. 9, n. 6, p. 521-526, 2007.1461-5185http://hdl.handle.net/11449/70172Purpose: To evaluate the influence of the brush type as a earner of priming adhesive solutions and the use of paper points as a remover of the excess of these solutions on the push-out bond strength of resin cement to bovine root dentin. The null hypotheses were that brush type and the use of paper points do not affect the bond strength. Materials and Methods: The canals of 80 single-root bovine roots (16 mm in length) were prepared at 12 mm using the preparation drill (FRC Postec Plus, Ivoclar). Half of each root was embedded in acrylic resin and the specimens were divided into 8 groups, considering the factors brush type (4 levels) and paper point (2 levels) (n = 10): Gr 1: small microbrush (Cavi-Tip, SDI); Gr 2: Microbrush (Dentsply); Gr 3: Endobrush (Bisco); Gr 4: conventional brush (Bisco); Gr 5: Cavi-Tip (SDI) + paper points; Gr 6: Microbrush (Dentsply) + paper points; Gr 7: Endobrush (Bisco) + paper points; Gr 8: conventional brush (Bisco) + paper points. The root dentin was treated with a multistep total-etch adhesive system (All Bond 2). The adhesive system was applied using each microbrush, with and without using paper points. One fiber post was molded with addition silicon and 80 posts were made of resin cement (Duolink), The resin posts were luted (Duolink resin cement), and the specimens were stored for 24 h in water at 37°C. Each specimen was cut into 4 disk-shaped samples (1.8 mm in thickness), which were submitted to the push-out test. Results: The brush type (p < 0.0001) (small microbrush > microbrush = endobrush = conventional brush) and the use of paper points (p = 0.0001) (with > without) influenced the bond strength significantly (two-way ANOVA). The null hypotheses were rejected. Conclusion: The smallest brush (Cavi-Tip) and the use of paper points significantly improved the resin bond to bovine root dentin.521-526engBond strengthMicrobrushPaper pointPush-out testResin cementRoot canal dentinAll Bond 2All-Bond 2dentin bonding agentDuo LinkDuo-Linkmethacrylic acid derivativeresin cementsilicone derivativeunclassified drugwateranimalcattlechemistrydental acid etchingdental bondingdentinendodonticsequipment designinstrumentationmaterials testingmechanical stressmethodologypaperscanning electron microscopysurface propertytemperaturetimetooth crowntooth pulpultrastructureAcid Etching, DentalAnimalsCattleDental BondingDental Pulp CavityDentinDentin-Bonding AgentsEquipment DesignMaterials TestingMethacrylatesMicroscopy, Electron, ScanningPaperPost and Core TechniqueResin CementsRoot Canal PreparationSiliconesStress, MechanicalSurface PropertiesTemperatureTime FactorsWaterArtigo10.3290/j.jad.a12907WOS:000251741800006Acesso restrito2-s2.0-375490643339234456003563666