Effect of extrinsic pigmentation and surface treatments on biaxial flexure strength after cyclic loading of a translucent ZrO2 ceramic

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorJuiz de Fora/MG-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorHealth Science Center-
Autor(es): dc.contributorNew York University College of Dentistry-
Autor(es): dc.creatorBittar, Breno Fortes-
Autor(es): dc.creatorMiranda, Jean Soares [UNESP]-
Autor(es): dc.creatorSimões, Arthur Chaves-
Autor(es): dc.creatorde Carvalho Ramos, Nathália [UNESP]-
Autor(es): dc.creatorMachado, João P.B.-
Autor(es): dc.creatorZhang, Yu-
Autor(es): dc.creatorSouza, Rodrigo Othávio Assunção-
Autor(es): dc.creatorLeite, Fabíola Pessôa Pereira-
Data de aceite: dc.date.accessioned2022-02-22T00:23:09Z-
Data de disponibilização: dc.date.available2022-02-22T00:23:09Z-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2020-12-11-
Data de envio: dc.date.issued2019-10-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.dental.2019.08.117-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/197963-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/197963-
Descrição: dc.descriptionObjective: To evaluate the influence of extrinsic pigmentation on the biaxial flexural strength and surface topographic of translucent Y-TZP (InCoris TZI – Sirona – USA) subjected to several surface treatments. Methods: Sintered zirconia discs-shaped specimens (n = 120) (ø:12 mm; thickness:1.2 mm; ISO 6872) were prepared and divided (n = 15) according to various factors: “extrinsic pigmentation” (n: without; p: with) and “surface treatments” (C: control — as sintered; A: abraded with silica-coated alumina particles (30 μm); G: glazed with a thin film of low-fusing porcelain glaze; GH: glazed and etched with 10% hydrofluoridric acid for 60 s. Mechanical cycling (1.2 × 106 cycles, 200 N, 3.8 Hz) and flexural strength test (1 mm/min — 1000 kg cell) were performed. Two-way ANOVA and Tukey's were used for statistical test (α = 0.05). Weibull analysis was used to evaluate the strength reliability. Samples were analyzed via (1) an optical profilometer to determine the surface roughness (Ra); (2) an X-ray diffraction (XRD) to evaluate phase transformations; and (3) a SEM equipped with an energy dispersive X-ray spectroscopy (EDX) to elucidate morphological properties and chemical compositions. Results: Regardless of the surface treatment (p = 0.5459) (Cn: 560.16 MPa; Gn: 573.36 MPa; An: 643.51 MPa; GHn: 542.94 MPa; Cp: 628.04 MPa; Gp: 641.90 MPa; Ap: 554.47 MPa; GHp :602.84 MPa) and extrinsic pigmentation (p = 0.1280) there was no difference in the flexural strength among the experimental groups. According to the XRD analysis, phase transformations occurred in the An group (t → m) and in Ap group (t → c). Surface roughness was affected by surface treatments (An — p = 0.001) and extrinsic pigmentation (Gp — p = 0.001). Significance: The biaxial flexural strength of the tested samples was not affected neither by surface treatments nor by pigmentation, although it can cause phase transformation and promote surface roughness.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)-
Descrição: dc.descriptionNational Institute of Dental and Craniofacial Research-
Descrição: dc.descriptionDepartment of Restorative Dentistry Federal University of Juiz de Fora (UFJF) Juiz de Fora/MG-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University – UNESP-
Descrição: dc.descriptionFederal University of Rio Grande do Norte/UFRN Health Science Center Department of Dentistry-
Descrição: dc.descriptionNew York University College of Dentistry Department of Biomaterials and Biomimetics, 433 First Avenue, Room 810-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University – UNESP-
Descrição: dc.descriptionNational Institute of Dental and Craniofacial Research: R01DE026279-
Descrição: dc.descriptionNational Institute of Dental and Craniofacial Research: R01DE026772-
Formato: dc.format1644-1653-
Idioma: dc.languageen-
Relação: dc.relationDental Materials-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectBiaxial flexural strength-
Palavras-chave: dc.subjectPhase transformation-
Palavras-chave: dc.subjectSurface characterization-
Palavras-chave: dc.subjectZirconia surface treatment-
Título: dc.titleEffect of extrinsic pigmentation and surface treatments on biaxial flexure strength after cyclic loading of a translucent ZrO2 ceramic-
Tipo de arquivo: dc.typelivro digital-
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