Effect of Porcelain-to-Zirconia Ratio and Bonding Strategy on the Biaxial Flexural Strength and Weibull Characteristics of a Stress-Free Bilayer CAD/CAM Ceramic System

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorFederal University of ABC-
Autor(es): dc.contributorDivision of Prosthodontics-
Autor(es): dc.contributorSchool of Dental Medicine-
Autor(es): dc.contributorFederal University of Rio Grande do Norte-
Autor(es): dc.creatorSato, Tabata Prado-
Autor(es): dc.creatorArata, Anelyse-
Autor(es): dc.creatorde Miranda, Larissa Mendonça-
Autor(es): dc.creatorBottino, Marco Antonio-
Autor(es): dc.creatorde Melo, Renata Marques-
Autor(es): dc.creatorZhang, Yu-
Autor(es): dc.creatorSouza, Rodrigo Othávio Assunção-
Data de aceite: dc.date.accessioned2025-08-21T19:23:45Z-
Data de disponibilização: dc.date.available2025-08-21T19:23:45Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2021-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.11607/ijp.7551-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/249158-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/249158-
Descrição: dc.descriptionPurpose: To evaluate the biaxial flexural strength of different porcelain-to-zirconia thickness ratios and bonding strategies of a stress-free bilayer CAD/CAM ceramic system. Materials and Methods: A total of 60 zirconia discs (diameter: 15 mm; thickness: 0.3 or 0.5 mm; n = 30 for each thickness) were divided into six groups (n = 10 each) according to porcelain-to-zirconia ratio and bonding strategy: VM/Zr (control): zirconia discs veneered with a feldspathic ceramic (VM 9, Vita) in 0.9-mm and 0.7-mm thicknesses using a conventional hand-layering technique; VB/Zr-SBU: zirconia discs airborne particle–abraded with 50-μm Al2O3 particles followed by an MDP primer application (Single Bond Universal, 3M) and bonded to the porcelain with a resin cement (Panavia F 2.0, Kuraray); and VB/Zr-RC: zirconia discs airborne particle– abraded with 30-μm silica-coated Al2O3 particles and silanized and bonded to the porcelain with the same resin cement. Before cementation, the VB (Vitablocs II) discs were etched with 5% hydrofluoric acid (60 seconds), followed by silane application. The bilayers (thickness = 1.2 mm) were loaded with 750 g while light curing the resin cement. Two porcelain-to-zirconia thickness ratios were evaluated: 0.9: 0.3 mm and 0.7: 0.5 mm. All groups were subjected to 106 mechanical cycles, followed by a biaxial flexural test. Data (MPa) were subjected to two-way analysis of variance (ANOVA), Tukey test (5%), and Weibull analyses. Results: Two-way ANOVA revealed that the factor porcelain-to-zirconia ratio (P =.0556) was not significant; however, the bonding strategy factor was statistically significant. Among the 0.5-mm zirconia groups, the VB/Zr-SBU group presented higher flexural strength (s) than the VM/Zr or VB/Zr-RC groups. Similar results were also found for the 0.3-mm zirconia groups, in which the VB/Zr-SBU group also presented higher strength than the others, which were similar in comparison (Tukey). The Weibull modulus was similar among the groups; however, the characteristic strength was significantly different (P =.000). Conclusion: The zirconia bonding strategy with 50-μm Al2O3 airborne-particle abrasion, followed by a primer application, increases the flexural strength of a stress-free bilayer CAD/CAM ceramic system-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionInstitute of Science and Technology Universidade Estadual Paulista São José dos Campos-
Descrição: dc.descriptionNanoscience and Advanced Materials Program Federal University of ABC, Bangú-
Descrição: dc.descriptionFederal University of Rio Grande do Norte Department of Dentistry Division of Prosthodontics-
Descrição: dc.descriptionDepartment of Dental Materials Institute of Science and Technology University Estadual Paulista São José dos Campos-
Descrição: dc.descriptionUniversity of Pennsylvania School of Dental Medicine Department of Preventive and Restorative Sciences-
Descrição: dc.descriptionDepartment of Dentistry Federal University of Rio Grande do Norte, Rio Grande do Norte-
Descrição: dc.descriptionInstitute of Science and Technology Universidade Estadual Paulista São José dos Campos-
Descrição: dc.descriptionDepartment of Dental Materials Institute of Science and Technology University Estadual Paulista São José dos Campos-
Descrição: dc.descriptionFAPESP: 2012/02945-0-
Formato: dc.format469-479-
Idioma: dc.languageen-
Relação: dc.relationInternational Journal of Prosthodontics-
???dc.source???: dc.sourceScopus-
Título: dc.titleEffect of Porcelain-to-Zirconia Ratio and Bonding Strategy on the Biaxial Flexural Strength and Weibull Characteristics of a Stress-Free Bilayer CAD/CAM Ceramic System-
Tipo de arquivo: dc.typelivro digital-
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