High-versus low-viscosity resin cements: Its effect on the load-bearing capacity under fatigue of a translucent zirconia

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Autor(es): dc.contributorUniversidade Federal de Sergipe (UFS)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorPackaeser, Maria Gabriela-
Autor(es): dc.creatorAragonez, Gabriela Carrão-
Autor(es): dc.creatorSoares, Pablo Machado-
Autor(es): dc.creatorBorges, Alexandre Luis Souto-
Autor(es): dc.creatorPereira, Gabriel Kalil Rocha-
Autor(es): dc.creatorValandro, Luiz Felipe-
Autor(es): dc.creatorRippe, Marília Pivetta-
Data de aceite: dc.date.accessioned2025-08-21T21:00:02Z-
Data de disponibilização: dc.date.available2025-08-21T21:00:02Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-06-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jmbbm.2023.105829-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/247166-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/247166-
Descrição: dc.descriptionThe purpose of the present study was to characterize the elastic modulus and Poisson's ratio of a resin cement with distinct viscosities, and to evaluate their impact on the static and fatigue strength of a translucent zirconia (4Y-PSZ) after air-abrasion surface treatment. Bar-shaped specimens of two different viscosities of resin cement (high and low) were obtained (25 × 10 × 3 mm). Sonelastic and Maxwell principles tests were performed to determine the elastic modulus and Poisson's ratio of each resin cement. Disc-shaped specimens of 4Y-PSZ were made (Ø = 15 mm, 1.2 mm in thickness) for the mechanical tests and allocated into groups according to two factors: surface treatment (presence or absence of air-abrasion with alumina particles; 45 μm grain-size); cement (absence, low or high viscosity). The static (n = 10) and cyclical (n = 15) biaxial flexural strength tests were performed by piston-on-three-balls geometry. A fatigue strength test was executed (20 Hz, initial stress of 60 MPa [12% of the mean static biaxial flexural strength], followed by increments of 25 MPa [5% of the mean static biaxial flexural strength] at each step of 10,000 cycles until the failure). The obtained data were analyzed by Weibull analysis. Survival rates were tabulated by the Kaplan-Meier test. Complementary analyses of surface roughness, topography, cross-sectional interfacial zone, fractography, and zirconia crystalline content (X-ray diffraction) were also performed. The evaluated resin cements with high and low viscosity presented similar elastic modulus (13.63 GPa; 12.74 GPa) and Poisson's ratio (0.32; 0.30), respectively. The air-abraded groups depicted higher mechanical strength of the zirconia ceramics than non-abraded groups (p˂ 0.05), regardless of the resin cement. 4Y-PSZ adhesively bonded to a high or low viscosity resin cement have statistically similar behavior (p˃ 0.05). The mechanical structural reliability of the 4Y-PSZ was not affected by the factors. Therefore, resin cement with high and low viscosity presented similar properties and potential to fill the zirconia surface, and did not affect the mechanical behavior of 4Y-PSZ. However, the air-abrasion surface treatment increased the static and fatigue flexural strength of the translucent zirconia.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionFaculty of Dentistry Prosthetic Dentistry Unit Federal University of Santa Maria (UFSM), Rio Grande do Sul State-
Descrição: dc.descriptionMSciD and PhD Post-Graduate Programs in Oral Science Faculty of Dentistry Prosthetic Dentistry Unit Federal University of Santa Maria (UFSM), Rio Grande do Sul State-
Descrição: dc.descriptionMSciD and PhD Post-Graduate Programs in Science Applied for Oral Health São Paulo State University (UNESP), São José dos Campos-
Descrição: dc.descriptionMSciD and PhD Post-Graduate Programs in Science Applied for Oral Health São Paulo State University (UNESP), São José dos Campos-
Descrição: dc.descriptionCAPES: 001-
Idioma: dc.languageen-
Relação: dc.relationJournal of the Mechanical Behavior of Biomedical Materials-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectFatigue strength-
Palavras-chave: dc.subjectLuting agent-
Palavras-chave: dc.subjectSurvival analysis-
Palavras-chave: dc.subjectYttrium-stabilized zirconia-
Título: dc.titleHigh-versus low-viscosity resin cements: Its effect on the load-bearing capacity under fatigue of a translucent zirconia-
Tipo de arquivo: dc.typelivro digital-
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