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dc.contributor.authorBeline, Thamara
dc.contributor.authorda Silva, José H.D. [UNESP]
dc.contributor.authorMatos, Adaias O.
dc.contributor.authorAzevedo Neto, Nilton F. [UNESP]
dc.contributor.authorde Almeida, Amanda B.
dc.contributor.authorNociti Júnior, Francisco H.
dc.contributor.authorLeite, Douglas M.G.
dc.contributor.authorRangel, Elidiane Cipriano [UNESP]
dc.contributor.authorBarão, Valentim A.R.
dc.identifier.citationMaterials Science and Engineering C, v. 101, p. 111-119.
dc.description.abstractThe aim of this study was to tailor the deposition parameters of magnetron sputtering to synthetize tantalum oxide (Ta x O y ) films onto commercially pure titanium (cpTi) surface. The structural and optical properties, morphology, roughness, elemental chemical composition and surface energy were assessed. The impact of Ta x O y films on initial Streptococcus sanguinis adhesion was investigated. The morphology and spreading of pre-osteoblastic (MC3T3-E1) cells on a crystalline tantalum oxide film were evaluated. Ta x O y films with estimated thickness of 600 nm and different structures (amorphous or crystalline) were produced depending on the various oxygen flow rates and parameters used. X-ray diffraction analysis revealed that the 8 O 2 sccm (600 °C/400 W) group showed crystallization corresponding to the β-Ta 2 O 5 phase. Optical analysis showed that the 4 O 2 sccm (200 °C 300 W) to 8 O 2 sccm (600 °C 300 W) groups and 10 O 2 sccm (200 °C 300 W) group presented regular and large-amplitude interference oscillations, suggesting high optical homogeneity of the films. The crystalline β-Ta 2 O 5 coating showed higher roughness and surface energy values than the other groups (P <.05) and was biocompatible. Compared with cpTi, the amorphous and crystalline tantalum oxide films did not increase bacterial adhesion (P >.05). By tailoring the deposition parameters, we synthetized a crystalline β-Ta 2 O 5 coating that improved titanium surface properties and positively affected cell spreading and morphology, making it a promising surface treatment for titanium-based implants.en
dc.description.sponsorshipASCRS Research Foundation
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.relation.ispartofMaterials Science and Engineering C
dc.subjectDental implants
dc.subjectMagnetron sputtering
dc.subjectOptical characterization
dc.subjectTantalum oxide
dc.titleTailoring the synthesis of tantalum-based thin films for biomedical application: Characterization and biological responseen
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionTribocorrosion and Nanomedicine (IBTN)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionTechnological Institute of Aeronautics (ITA)
dc.description.affiliationUniversity of Campinas (UNICAMP) Piracicaba Dental School Department of Prosthodontics and Periodontology, Av. Limeira, 901
dc.description.affiliationInstitute of Biomaterials Tribocorrosion and Nanomedicine (IBTN)
dc.description.affiliationSão Paulo State University (UNESP) School of Sciences Department of Physics, Av. Eng. Luís Edmundo C. Coube, 14-01
dc.description.affiliationPlasma and Processes Laboratory Technological Institute of Aeronautics (ITA), Pça. Marechal Eduardo Gomes, 50
dc.description.affiliationSão Paulo State University (UNESP) Institute of Science and Technology Laboratory of Technological Plasmas, Av. Três de Março, 511
dc.description.affiliationUnespSão Paulo State University (UNESP) School of Sciences Department of Physics, Av. Eng. Luís Edmundo C. Coube, 14-01
dc.description.affiliationUnespSão Paulo State University (UNESP) Institute of Science and Technology Laboratory of Technological Plasmas, Av. Três de Março, 511
dc.rights.accessRightsAcesso aberto
dc.description.sponsorshipIdASCRS Research Foundation: 2016/07269-3
dc.description.sponsorshipIdASCRS Research Foundation: 2016/11470-6
dc.description.sponsorshipIdASCRS Research Foundation: 2017/18916-2
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