Effect of the Layering Technique on Bond Strength and Cohesive Resistance of a Porcelain-Zirconia System

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dc.contributor.authorMacedo, Vanessa Cruz [UNESP]
dc.contributor.authorAnami, Lilian Costa [UNESP]
dc.contributor.authorMelo, Renata Marques de [UNESP]
dc.contributor.authorBottino, Marco Antonio [UNESP]
dc.contributor.authorValandro, Luiz Felipe
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Sergipe (UFS)
dc.date.accessioned2014-12-03T13:11:12Z
dc.date.available2014-12-03T13:11:12Z
dc.date.issued2014-01-01
dc.description.abstractPurpose: To evaluate the influence of the number of porcelain layers on its cohesive strength and on bonding to zirconia.Materials and Methods: Y-TZP blocks were cut into 1 cm(3) specimens (n = 30). The feldspathic porcelain (V9) was applied to the zirconia in different numbers of layers up to 1 cm total thickness (n = 10): ZP1 one layer; ZP2 two layers; ZP3 three layers. Ten specimens with V9 were prepared following the same protocols of groups 1 (P1) and 3 (P3). All study specimens were sintered three times. The specimens were cut into 1 mm(2) microbars and tested under tension in a universal testing machine (0.5 mm/min). We calculated strength (sigma, in MPa) by dividing the fracture load (N) by the fractured area (mm(2)). The failure mode was classified as cohesive (used to calculate the cohesive strength, sigma(c)) or adhesive (bond strength, sigma(a)). The data were analyzed by Kruskal-Wallis and Dunn's tests (alpha = 0.05) or ANOVA and Tukey's test (alpha = 0.05), according to their distribution parameters.Results: The ZP1 group presented the highest values for cya data, compared with other groups, which were statistically similar. The predominant failure mode for the bonded specimens was cohesive. With regard to the cohesive strength (sigma(c)), ZP1 presented the highest values.Conclusion: It can be concluded that the presence of more than one porcelain layer decreases its cohesive strength and its bonding strength to zirconia.en
dc.description.affiliationSao Paulo State Univ, UNESP, Sao Jose Campos Dent Sch, Sci & Technol Inst,Grad Program Restorat Dent,Pro, Sao Paulo, Brazil
dc.description.affiliationSao Paulo State Univ, UNESP, Sao Jose Campos Dent Sch, Sci & Technol Inst,Dept Dent Mat & Prosthodont, Sao Paulo, Brazil
dc.description.affiliationUniv Fed Santa Maria, Fac Odontol, Grad Program Oral Sci, Prosthodont Unit, BR-97119900 Santa Maria, RS, Brazil
dc.description.affiliationUnespSao Paulo State Univ, UNESP, Sao Jose Campos Dent Sch, Sci & Technol Inst,Grad Program Restorat Dent,Pro, Sao Paulo, Brazil
dc.description.affiliationUnespSao Paulo State Univ, UNESP, Sao Jose Campos Dent Sch, Sci & Technol Inst,Dept Dent Mat & Prosthodont, Sao Paulo, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 10/50879-0
dc.format.extent57-62
dc.identifierhttp://dx.doi.org/10.3290/j.jad.a30540
dc.identifier.citationJournal Of Adhesive Dentistry. Hanover Park: Quintessence Publishing Co Inc, v. 16, n. 1, p. 57-62, 2014.
dc.identifier.doi10.3290/j.jad.a30540
dc.identifier.issn1461-5185
dc.identifier.lattes9234456003563666
dc.identifier.urihttp://hdl.handle.net/11449/112987
dc.identifier.wosWOS:000334323300009
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.subjectdental porcelainen
dc.subjectzirconiaen
dc.subjectsinteringen
dc.subjecttensile strengthen
dc.titleEffect of the Layering Technique on Bond Strength and Cohesive Resistance of a Porcelain-Zirconia Systemen
dc.typeArtigo
dcterms.rightsHolderQuintessence Publishing Co Inc
unesp.author.lattes9234456003563666
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, São José dos Campospt

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Artigos - Odontologia Restauradora - ICT
Artigos - Materiais Odontológicos e Prótese - ICT