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Metadados | Descrição | Idioma |
---|---|---|
Autor(es): dc.contributor | Universidade de São Paulo (USP) | - |
Autor(es): dc.contributor | Universidade Estadual Paulista (Unesp) | - |
Autor(es): dc.contributor | Univ Mississippi | - |
Autor(es): dc.creator | Pires, Luara Aline | - |
Autor(es): dc.creator | Azevedo Silva, Lucas Jose de | - |
Autor(es): dc.creator | Ferrairo, Brunna Mota | - |
Autor(es): dc.creator | Erbereli, Rogerio | - |
Autor(es): dc.creator | Parreira Lovo, Joao Fiore | - |
Autor(es): dc.creator | Gomes, Orisson Ponce [UNESP] | - |
Autor(es): dc.creator | Rubo, Jose Henrique | - |
Autor(es): dc.creator | Lisboa-Filho, Paulo Noronha [UNESP] | - |
Autor(es): dc.creator | Griggs, Jason Alan | - |
Autor(es): dc.creator | Fortulan, Carlos Alberto | - |
Autor(es): dc.creator | Sanches Borges, Ana Flavia | - |
Data de aceite: dc.date.accessioned | 2022-02-22T00:09:39Z | - |
Data de disponibilização: dc.date.available | 2022-02-22T00:09:39Z | - |
Data de envio: dc.date.issued | 2020-12-09 | - |
Data de envio: dc.date.issued | 2020-12-09 | - |
Data de envio: dc.date.issued | 2020-01-31 | - |
Fonte completa do material: dc.identifier | http://dx.doi.org/10.1016/j.dental.2019.11.006 | - |
Fonte completa do material: dc.identifier | http://hdl.handle.net/11449/196513 | - |
Fonte: dc.identifier.uri | http://educapes.capes.gov.br/handle/11449/196513 | - |
Descrição: dc.description | Objectives. A bovine dense hydroxyapatite ceramic (HA) was produced as new biomaterial, however, the production of a material with consistently high flexural strength remains challenging. The objective of this study was to evaluate the effects of ZnO nanoparticles, TiO2 nanoparticles, and TiO2 nanotubes (1%, 2%, and 5% by weight) on the microstructure and flexural strength of a bovine dense hydroxyapatite ceramic (HA). Methods. Discs ((sic) =12.5 mm; thickness =1.3 mm) were prepared and subjected to X-ray diffraction (XRD), and observation with a field emission scanning electron microscope (FE-SEM), biaxial flexural strength (BFS) testing, and Vickers hardness (VH) testing. The BFS and VH data were subjected to ANOVA and Tukey post-hoc tests (alpha = 0.05) and Weibull analysis. Results. The XRD showed that the addition of nanomaterials caused the formation of a secondary phase when 5% of the ZnO nanoparticles was used, or when all percentages of the TiO2 nanoparticles/nanotubes were used, and the HA crystallographic planes were maintained. Differences were not observed between the higher BFS values obtained with pure HA and those obtained with the 5% addition of TiO2 nanoparticles. However, the results were different compared with the other groups (alpha = 0.05). The results obtained by Weibull analysis revealed that the 1%, 2%, and 5% addition of TiO2 nanotubes, and the 1% and 2% addition of TiO2 nanoparticles decreased the HA characteristic strength (sigma(0)), while the Weibull modulus (m) increased when 5% of TiO2 nanoparticles, 1% and 2% of ZnO nanoparticles, and 2% of TiO2 nanoparticles were added, but with no statistical difference from the pure HA. The 5% addition of ZnO2 nanoparticles decreased the sigma(0) without changing m. Moreover, the 5% addition of TiO2 nanoparticles resulted in an m closest to that of pure HA. Regarding the VH results, the blend of HA with 1% and 2% addition of TiO2 nanoparticles exhibited the higher values, which were similar between the different addition ratios (p = 0.102). Moreover, the addition of 5% TiO2 nanoparticles resulted in higher value compared with pure HA. Significance. This study demonstrated that the HA blend with 5% of TiO2 nanoparticles has the greatest potential as a bovine HA dense bioceramic reinforcement. (C) 2019 The Academy of Dental Materials. Published by Elsevier Inc. All rights reserved. | - |
Descrição: dc.description | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | - |
Descrição: dc.description | Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) | - |
Descrição: dc.description | Univ Sao Paulo, Dept Operat Dent Endodont & Dent Mat, Bauru Sch Dent, Alameda Dr Octavio Pinheiro Brisolla 9-75, BR-17012901 Bauru, SP, Brazil | - |
Descrição: dc.description | Univ Sao Paulo, Bauru Sch Dent, Dept Prosthodont & Periodont, Alameda Dr Octavio Pinheiro Brisolla 9-75, BR-17012901 Bauru, SP, Brazil | - |
Descrição: dc.description | Univ Sao Paulo, Sao Carlos Sch Engn, Dept Mech Engn, Ave Trabalhador Sao Carlense 400, BR-13566590 Sao Carlos, SP, Brazil | - |
Descrição: dc.description | Sao Paulo State Univ, Sch Sci, Dept Phys, Av Engn Luiz Edmundo Carrijo Coube S-N, BR-17033360 Bauru, SP, Brazil | - |
Descrição: dc.description | Univ Mississippi, Sch Dent, Dept Biomed Mat Sci, Med Ctr, 2500 North State St,Room D528, Jackson, MS 39216 USA | - |
Descrição: dc.description | Sao Paulo State Univ, Sch Sci, Dept Phys, Av Engn Luiz Edmundo Carrijo Coube S-N, BR-17033360 Bauru, SP, Brazil | - |
Descrição: dc.description | FAPESP: 2018/23639-0 | - |
Descrição: dc.description | FAPESP: 2013/07296-2 | - |
Descrição: dc.description | CNPq: 154705/2015-2 | - |
Formato: dc.format | E38-E46 | - |
Idioma: dc.language | en | - |
Publicador: dc.publisher | Elsevier B.V. | - |
Relação: dc.relation | Dental Materials | - |
???dc.source???: dc.source | Web of Science | - |
Palavras-chave: dc.subject | Ceramics | - |
Palavras-chave: dc.subject | Durapatite | - |
Palavras-chave: dc.subject | Nanop articles | - |
Palavras-chave: dc.subject | Nanotubes | - |
Título: dc.title | Effects of ZnO/TiO2 nanoparticle and TiO2 nanotube additions to dense polycrystalline hydroxyapatite bioceramic from bovine bones | - |
Tipo de arquivo: dc.type | livro digital | - |
Aparece nas coleções: | Repositório Institucional - Unesp |
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