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

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dc.contributor.authorda Silva, Lucas Hian
dc.contributor.authorRinaldi, Laura Ajamil
dc.contributor.authorLazar, Dolores Ribeiro Ricci
dc.contributor.authorUssui, Valter
dc.contributor.authorTango, Rubens Nisie [UNESP]
dc.contributor.authorBelli, Renan
dc.contributor.authorLohbauer, Ulrich
dc.contributor.authorCesar, Paulo Francisco
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionNuclear and Energy Research Institute (IPEN)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionFriedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
dc.date.accessioned2023-07-29T16:13:08Z
dc.date.available2023-07-29T16:13:08Z
dc.date.issued2023-07-01
dc.description.abstractY-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.en
dc.description.affiliationDepartment of Biomaterials and Oral Biology Faculty of Dentistry Universidade de São Paulo (USP)
dc.description.affiliationMaterials Science and Engineering Center Nuclear and Energy Research Institute (IPEN)
dc.description.affiliationDepartamento of Dental Materials and Prosthodontics Institute of Science and Technology (ICT) Universidade Estadual Paulista “Júlio Mesquita Filho” (UNESP)
dc.description.affiliationResearch Laboratory for Dental Biomaterials Dental Clinic 1 Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
dc.description.affiliationUnespDepartamento of Dental Materials and Prosthodontics Institute of Science and Technology (ICT) Universidade Estadual Paulista “Júlio Mesquita Filho” (UNESP)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 2012/10955-5
dc.description.sponsorshipIdFAPESP: 2012/16027-2
dc.description.sponsorshipIdFAPESP: 2013/00728-4
dc.identifierhttp://dx.doi.org/10.1016/j.jmbbm.2023.105888
dc.identifier.citationJournal of the Mechanical Behavior of Biomedical Materials, v. 143.
dc.identifier.doi10.1016/j.jmbbm.2023.105888
dc.identifier.issn1878-0180
dc.identifier.issn1751-6161
dc.identifier.scopus2-s2.0-85157960271
dc.identifier.urihttp://hdl.handle.net/11449/249929
dc.language.isoeng
dc.relation.ispartofJournal of the Mechanical Behavior of Biomedical Materials
dc.sourceScopus
dc.subjectCo-precipitation of mixed hydroxides
dc.subjectHydrothermal treatment
dc.subjectMulti-walled carbon nanotube
dc.subjectYttria-stabilized tetragonal zirconia polycrystals
dc.titleDevelopment of Y-TZP/MWCNT-SiO2 nanocomposite for dental prothesesen
dc.typeArtigo
unesp.author.orcid0000-0001-7384-304X[3]
unesp.author.orcid0000-0003-0946-1826[5]
unesp.author.orcid0000-0002-9862-0886[7]

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Artigos - Materiais Odontológicos e Prótese - ICT