Development of Y-TZP/MWCNT-SiO2 nanocomposite for dental protheses

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorNuclear and Energy Research Institute (IPEN)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorFriedrich-Alexander-Universität Erlangen-Nürnberg (FAU)-
Autor(es): dc.creatorda Silva, Lucas Hian-
Autor(es): dc.creatorRinaldi, Laura Ajamil-
Autor(es): dc.creatorLazar, Dolores Ribeiro Ricci-
Autor(es): dc.creatorUssui, Valter-
Autor(es): dc.creatorTango, Rubens Nisie-
Autor(es): dc.creatorBelli, Renan-
Autor(es): dc.creatorLohbauer, Ulrich-
Autor(es): dc.creatorCesar, Paulo Francisco-
Data de aceite: dc.date.accessioned2025-08-21T23:29:44Z-
Data de disponibilização: dc.date.available2025-08-21T23:29:44Z-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-29-
Data de envio: dc.date.issued2023-07-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jmbbm.2023.105888-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/249929-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/249929-
Descrição: dc.descriptionY-TZP/MWCNT-SiO2 nanocomposite was synthesized by co-precipitation and hydrothermal treatment methods. After the characterization of the MWCNT-SiO2 powder, specimens were obtained from the synthesized material Y-TZP/MWCNT-SiO2 by uniaxial pressing for a second characterization and later comparison of its optical and mechanical properties with the conventional Y-TZP. The MWCNT-SiO2 was presented in bundles of carbon nanotubes coated by silica (mean length: 5.10 ± 1.34 μm /D90: 6.9 μm). The composite manufactured was opaque (contrast ratio: 0.9929 ± 0.0012) and had a white color with a slightly difference from the conventional Y-TZP (ΔE00: 4.4 ± 2.2) color. The mechanical properties of Y-TZP/MWCNT-SiO2: vickers hardness (10.14 ± 1.27 GPa; p = 0.25) and fracture toughness (4.98 ± 0.30 MPa m1/2; p = 0.39), showed no significant difference from the conventional Y-TZP (hardness: 8.87 ± 0.89; fracture toughness: 4.98 ± 0.30 MPa m1/2). However, for flexural strength (p = 0.003), a lower value was obtained for Y-TZP/MWCNT-SiO2 (299.4 ± 30.5 MPa) when compared to the control Y-TZP (623.7 ± 108.8 MPa). The manufactured Y-TZP/MWCNT-SiO2 composite presented satisfactory optical properties, however the co-precipitation and hydrothermal treatment methods need to be optimized to avoid the formation of porosities and strong agglomerates, both from Y-TZP particles and MWCNT-SiO2 bundles, which lead to a significant decrease in the material flexural strength.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionDepartment of Biomaterials and Oral Biology Faculty of Dentistry Universidade de São Paulo (USP)-
Descrição: dc.descriptionMaterials Science and Engineering Center Nuclear and Energy Research Institute (IPEN)-
Descrição: dc.descriptionDepartamento of Dental Materials and Prosthodontics Institute of Science and Technology (ICT) Universidade Estadual Paulista “Júlio Mesquita Filho” (UNESP)-
Descrição: dc.descriptionResearch Laboratory for Dental Biomaterials Dental Clinic 1 Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)-
Descrição: dc.descriptionDepartamento of Dental Materials and Prosthodontics Institute of Science and Technology (ICT) Universidade Estadual Paulista “Júlio Mesquita Filho” (UNESP)-
Descrição: dc.descriptionFAPESP: 2012/10955-5-
Descrição: dc.descriptionFAPESP: 2012/16027-2-
Descrição: dc.descriptionFAPESP: 2013/00728-4-
Idioma: dc.languageen-
Relação: dc.relationJournal of the Mechanical Behavior of Biomedical Materials-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCo-precipitation of mixed hydroxides-
Palavras-chave: dc.subjectHydrothermal treatment-
Palavras-chave: dc.subjectMulti-walled carbon nanotube-
Palavras-chave: dc.subjectYttria-stabilized tetragonal zirconia polycrystals-
Título: dc.titleDevelopment of Y-TZP/MWCNT-SiO2 nanocomposite for dental protheses-
Tipo de arquivo: dc.typelivro digital-
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