Atenção: Todas as denúncias são sigilosas e sua identidade será preservada.
Os campos nome e e-mail são de preenchimento opcional
Metadados | Descrição | Idioma |
---|---|---|
Autor(es): dc.contributor | Juiz de Fora/MG | - |
Autor(es): dc.contributor | Universidade Estadual Paulista (Unesp) | - |
Autor(es): dc.contributor | Health Science Center | - |
Autor(es): dc.contributor | New York University College of Dentistry | - |
Autor(es): dc.creator | Bittar, Breno Fortes | - |
Autor(es): dc.creator | Miranda, Jean Soares [UNESP] | - |
Autor(es): dc.creator | Simões, Arthur Chaves | - |
Autor(es): dc.creator | de Carvalho Ramos, Nathália [UNESP] | - |
Autor(es): dc.creator | Machado, João P.B. | - |
Autor(es): dc.creator | Zhang, Yu | - |
Autor(es): dc.creator | Souza, Rodrigo Othávio Assunção | - |
Autor(es): dc.creator | Leite, Fabíola Pessôa Pereira | - |
Data de aceite: dc.date.accessioned | 2022-02-22T00:23:09Z | - |
Data de disponibilização: dc.date.available | 2022-02-22T00:23:09Z | - |
Data de envio: dc.date.issued | 2020-12-11 | - |
Data de envio: dc.date.issued | 2020-12-11 | - |
Data de envio: dc.date.issued | 2019-10-31 | - |
Fonte completa do material: dc.identifier | http://dx.doi.org/10.1016/j.dental.2019.08.117 | - |
Fonte completa do material: dc.identifier | http://hdl.handle.net/11449/197963 | - |
Fonte: dc.identifier.uri | http://educapes.capes.gov.br/handle/11449/197963 | - |
Descrição: dc.description | Objective: 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.description | Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG) | - |
Descrição: dc.description | National Institute of Dental and Craniofacial Research | - |
Descrição: dc.description | Department of Restorative Dentistry Federal University of Juiz de Fora (UFJF) Juiz de Fora/MG | - |
Descrição: dc.description | Department of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University – UNESP | - |
Descrição: dc.description | Federal University of Rio Grande do Norte/UFRN Health Science Center Department of Dentistry | - |
Descrição: dc.description | New York University College of Dentistry Department of Biomaterials and Biomimetics, 433 First Avenue, Room 810 | - |
Descrição: dc.description | Department of Dental Materials and Prosthodontics Institute of Science and Technology São Paulo State University – UNESP | - |
Descrição: dc.description | National Institute of Dental and Craniofacial Research: R01DE026279 | - |
Descrição: dc.description | National Institute of Dental and Craniofacial Research: R01DE026772 | - |
Formato: dc.format | 1644-1653 | - |
Idioma: dc.language | en | - |
Relação: dc.relation | Dental Materials | - |
???dc.source???: dc.source | Scopus | - |
Palavras-chave: dc.subject | Biaxial flexural strength | - |
Palavras-chave: dc.subject | Phase transformation | - |
Palavras-chave: dc.subject | Surface characterization | - |
Palavras-chave: dc.subject | Zirconia surface treatment | - |
Título: dc.title | Effect of extrinsic pigmentation and surface treatments on biaxial flexure strength after cyclic loading of a translucent ZrO2 ceramic | - |
Tipo de arquivo: dc.type | livro digital | - |
Aparece nas coleções: | Repositório Institucional - Unesp |
O Portal eduCAPES é oferecido ao usuário, condicionado à aceitação dos termos, condições e avisos contidos aqui e sem modificações. A CAPES poderá modificar o conteúdo ou formato deste site ou acabar com a sua operação ou suas ferramentas a seu critério único e sem aviso prévio. Ao acessar este portal, você, usuário pessoa física ou jurídica, se declara compreender e aceitar as condições aqui estabelecidas, da seguinte forma: