Effect of Surface Conditioning Modalities on the Repair Bond Strength of Resin Composite to the Zirconia Core / Veneering Ceramic Complex

Página do item simplificado
dc.contributor.authorOezcan, Mutlu
dc.contributor.authorValandro, Luiz Felipe
dc.contributor.authorBraga Pereira, Sarina Maciel [UNESP]
dc.contributor.authorAmaral, Regina [UNESP]
dc.contributor.authorBottino, Marco Antonio [UNESP]
dc.contributor.authorPekkan, Gurel
dc.contributor.institutionUniv Zurich
dc.contributor.institutionUniversidade Federal de Sergipe (UFS)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionDumlupinar Univ
dc.date.accessioned2014-12-03T13:11:11Z
dc.date.available2014-12-03T13:11:11Z
dc.date.issued2013-01-01
dc.description.abstractPurpose: This study evaluated the effect of different surface conditioning protocols on the repair strength of resin composite to the zirconia core / veneering ceramic complex, simulating the clinical chipping phenomenon.Materials and Methods: Forty disk-shaped zirconia core (Lava Zirconia, 3M ESPE) (diameter: 3 mm) specimens were veneered circumferentially with a feldspathic veneering ceramic (VM7, Vita Zahnfabrik) (thickness: 2 mm) using a split metal mold. They were then embedded in autopolymerizing acrylic with the bonding surfaces exposed. Specimens were randomly assigned to one of the following surface conditioning protocols (n = 10 per group): group 1, veneer: 4% hydrofluoric acid (HF) (Porcelain Etch) + core: aluminum trioxide (50-mu m Al2O3) + core + veneer: silane (ESPE-Sil); group 2: core: Al2O3 (50 mu m) + veneer: HF + core + veneer: silane; group 3: veneer: HF + core: 30 mu m aluminum trioxide particles coated with silica (30 mu m SiO2) + core + veneer: silane; group 4: core: 30 mu m SiO2 + veneer: HF + core + veneer: silane. Core and veneer ceramic were conditioned individually but no attempt was made to avoid cross contamination of conditioning, simulating the clinical intraoral repair situation. Adhesive resin (VisioBond) was applied to both the core and the veneer ceramic, and resin composite (Quadrant Posterior) was bonded onto both substrates using polyethylene molds and photopolymerized. After thermocycling (6000 cycles, 5 degrees C-55 degrees C), the specimens were subjected to shear bond testing using a universal testing machine (1 mm/min). Failure modes were identified using an optical microscope, and scanning electron microscope images were obtained. Bond strength data (MPa) were analyzed statistically using the non-parametric Kruskal-Wallis test followed by the Wilcoxon rank-sum test and the Bonferroni Holm correction (alpha = 0.05).Results: Group 3 demonstrated significantly higher values (MPa) (8.6 +/- 2.7) than those of the other groups (3.2 +/- 3.1, 3.2 +/- 3, and 3.1 +/- 3.5 for groups 1, 2, and 4, respectively) (p < 0.001). All groups showed exclusively adhesive failure between the repair resin and the core zirconia. The incidence of cohesive failure in the ceramic was highest in group 3 (8 out of 10) compared to the other groups (0/10, 2/10, and 2/10, in groups 1, 2, and 4, respectively). SEM images showed that air abrasion on the zirconia core only also impinged on the veneering ceramic where the etching pattern was affected.Conclusion: Etching the veneer ceramic with HF gel and silica coating of the zirconia core followed by silanization of both substrates could be advised for the repair of the zirconia core / veneering ceramic complex.en
dc.description.affiliationUniv Zurich, Dent Mat Unit, Ctr Dent & Oral Med, Clin Fixed & Removable Prosthodont & Dent Mat Sci, CH-8032 Zurich, Switzerland
dc.description.affiliationUniv Fed Santa Maria, Dept Restorat Dent, Div Prosthodont, BR-97119900 Santa Maria, RS, Brazil
dc.description.affiliationSao Paulo State Univ Sao Jose dos Campos, Dept Dent Mat & Prosthodont, Sao Jose Dos Campos, Brazil
dc.description.affiliationDumlupinar Univ, Fac Dent, Dept Prosthodont, Kutahya, Turkey
dc.description.affiliationUnespSao Paulo State Univ Sao Jose dos Campos, Dept Dent Mat & Prosthodont, Sao Jose Dos Campos, Brazil
dc.format.extent207-210
dc.identifierhttp://dx.doi.org/10.3290/j.jad.a29717
dc.identifier.citationJournal Of Adhesive Dentistry. Hanover Park: Quintessence Publishing Co Inc, v. 15, n. 3, p. 207-210, 2013.
dc.identifier.doi10.3290/j.jad.a29717
dc.identifier.issn1461-5185
dc.identifier.lattes9234456003563666
dc.identifier.urihttp://hdl.handle.net/11449/112962
dc.identifier.wosWOS:000321739000002
dc.language.isoeng
dc.publisherQuintessence Publishing Co Inc
dc.relation.ispartofJournal of Adhesive Dentistry
dc.relation.ispartofjcr1.691
dc.relation.ispartofsjr0,839
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectadhesionen
dc.subjectall-ceramicsen
dc.subjectbond strengthen
dc.subjectchippingen
dc.subjectcomposite resinen
dc.subjectrepairen
dc.subjectsurface conditioningen
dc.subjectzirconiaen
dc.titleEffect of Surface Conditioning Modalities on the Repair Bond Strength of Resin Composite to the Zirconia Core / Veneering Ceramic Complexen
dc.typeArtigo
dcterms.rightsHolderQuintessence Publishing Co Inc
unesp.author.lattes9234456003563666
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, São José dos Campospt

Arquivos

Coleções

Artigos - Materiais Odontológicos e Prótese - ICT