Novel 8%-TiO2-nanoparticle-reinforced dense polycrystalline bovine hydroxyapatite bioceramic

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Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorde Azevedo-Silva, Lucas José-
Autor(es): dc.creatorFerrairo, Brunna Mota-
Autor(es): dc.creatorPires, Luara Aline-
Autor(es): dc.creatorPadovini, David Santos Souza-
Autor(es): dc.creatorDias, Leonardo Francisco Gonçalves-
Autor(es): dc.creatorErbereli, Rogério-
Autor(es): dc.creatorFortulan, Carlos Alberto-
Autor(es): dc.creatorLisboa-Filho, Paulo Noronha-
Autor(es): dc.creatorRubo, José Henrique-
Autor(es): dc.creatorBorges, Ana Flávia Sanches-
Data de aceite: dc.date.accessioned2025-08-21T23:12:36Z-
Data de disponibilização: dc.date.available2025-08-21T23:12:36Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2022-05-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1002/ces2.10127-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/301465-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/301465-
Descrição: dc.descriptionThis study aimed to produce and characterize the microstructure and mechanical properties of dense polycrystalline bovine hydroxyapatite (DPBHA) bioceramics with 5% and 8% of TiO2 nanoparticles after final synthetization for future use in dental implants. Structural characterization was obtained from analyzes by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscope, energy dispersive spectroscopy, and relative density and apparent porosity. The mechanical characterization was performed by measuring the fracture toughness after three-point flexural strength (FS) test. The microstructural characterization results showed no secondary phase formation and nonhomogeneous nanoparticle dispersion in HA matrix. DPBHA/Np8% (2.9 ± 0.09 g/cm3) exhibited significantly greater density than DPBHA (2.7 ± 0.03 g/cm3) (p = 0.011) and DPBHA/Np5% (2.7 ± 0.05 g/cm3) (p = 0.041). DPBHA (0.9%) had the smallest porosity followed by DPBHA/Np8% (3.4%). DPBHA/Np5% (4.5%) exhibited the greatest proportion of pores. Pure HA (51.7 ± 10.3 MPa) and DPBHA/Np8% (47.4 ± 6.4 MPa) had significant greater FS (p < 0.001) than DPBHA/Np5% (28.8 ± 3.1 MPa). DPBHA (0.43 ± 0.01 MPa m1/2) and DPBHA/Np8% (0.40 ± 0.06 MPa m1/2) presented greater KIc than DPBHA/Np5% (0.23 ± 0.02 MPa m1/2) (p < 0.003; p < 0.007). In conclusion, 8% TiO2 nanoparticle addition to this synthesis would be a promising HA blend, as mechanical properties were similar, and the relative density/apparent porosity showed superior results than those of the DPBHA.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionDepartment of Prosthodontics Bauru School of Dentistry University of São Paulo-
Descrição: dc.descriptionDepartment of Operative Dentistry Endodontics and Dental Materials Bauru School of Dentistry University of São Paulo-
Descrição: dc.descriptionDepartment of Chemistry School of Sciences São Paulo State University-
Descrição: dc.descriptionDepartment of Physics School of Sciences São Paulo State University-
Descrição: dc.descriptionDepartment of Mechanical Engineering São Carlos School of Engineering University of São Paulo-
Descrição: dc.descriptionDepartment of Chemistry School of Sciences São Paulo State University-
Descrição: dc.descriptionDepartment of Physics School of Sciences São Paulo State University-
Descrição: dc.descriptionCNPq: 154705/2015-2-
Descrição: dc.descriptionFAPESP: 2013/07296-2-
Descrição: dc.descriptionFAPESP: 2018/23639-0-
Descrição: dc.descriptionFAPESP: 2020/01715-7-
Formato: dc.format158-169-
Idioma: dc.languageen-
Relação: dc.relationInternational Journal of Ceramic Engineering and Science-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectbioceramics-
Palavras-chave: dc.subjecthydroxyapatite-
Palavras-chave: dc.subjectnanoparticles-
Título: dc.titleNovel 8%-TiO2-nanoparticle-reinforced dense polycrystalline bovine hydroxyapatite bioceramic-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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