Titanium-tantalum alloy surface modification by hydroxyapatite layer on TiO2 nanotubes: Effect on microbial activity

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dc.contributor.authorCapellato, Patricia
dc.contributor.authorVasconcelos, Lucas V.B.
dc.contributor.authorVilela, Filipe B.
dc.contributor.authorRibeiro, Gilza Carla
dc.contributor.authorCorreia, Cristiane A.P. [UNESP]
dc.contributor.authorSilva, Gilbert
dc.contributor.authorSachs, Daniela
dc.contributor.authorRangel, André L.R. [UNESP]
dc.contributor.authorde Cecilia, A.C. Zavaglia
dc.contributor.authorAlves Claro, Ana P.R. [UNESP]
dc.contributor.institutionInstituto de Física e Química
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionInstituto de Engenharia Mecânica
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.date.accessioned2022-04-28T19:47:07Z
dc.date.available2022-04-28T19:47:07Z
dc.date.issued2021-01-01
dc.description.abstractOne of the major health security challenges of the 21st century is the occurrence of microbial infections and bacterial complications that could affect 10 million people by 2050. On the biomaterial field, implant metallic currently replaces partial or total body parts and can fail to be integrated into the body due to infections. This study performs two combined surface modifications on Ti-30Ta alloy, in order to obtain an infection-resistance and osseointegration surface on metallic implants to be tested within bacterial biofilm. The Group 1 investigated surface modifications by the anodization process in the electrolyte glycerol + NH4F 0.25% at 30V- 9 hours and annealed in 530°C (5°C/min). The Group 2 underwent the same process as Group 1 and, additionally, the samples were immersed in 0.3 M CaCl2 and 0.5 M Na2HPO4 solutions for hydroxyapatite growth. The substrate was characterized using scanning electron microscopy (SEM), X-ray diffractometer (XRD) and dynamic contact angle. S. epidermidis bacterial adhesion and biofilm formation. The results indicated that the Group 1 shows a higher antimicrobial activity, hydrophilic behavior and potential to be used for metallic implant applications. The Group 2 with the hydroxyapatite film coating did not have an improvement in the antimicrobial response.en
dc.description.affiliationUniversidade Federal de Itajubá Instituto de Física e Química, MG
dc.description.affiliationUniversidade Estadual Paulista “Júlio de Mesquita Filho” Departamento de Bioquímica Biociência e Diagnóstico Oral, SP
dc.description.affiliationUniversidade Federal de Itajubá Instituto de Engenharia Mecânica, MG
dc.description.affiliationUniversidade Estadual de Campinas Faculdade de Engenharia Mecânica, SP
dc.description.affiliationUniversidade Estadual Paulista Departamento de Materiais e Tecnologia Escola de Engenharia, SP
dc.description.affiliationUnespUniversidade Estadual Paulista “Júlio de Mesquita Filho” Departamento de Bioquímica Biociência e Diagnóstico Oral, SP
dc.description.affiliationUnespUniversidade Estadual Paulista Departamento de Materiais e Tecnologia Escola de Engenharia, SP
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.identifierhttp://dx.doi.org/10.1590/1980-5373-MR-2021-0285
dc.identifier.citationMaterials Research, v. 24, n. 6, 2021.
dc.identifier.doi10.1590/1980-5373-MR-2021-0285
dc.identifier.issn1980-5373
dc.identifier.issn1516-1439
dc.identifier.scopus2-s2.0-85118919337
dc.identifier.urihttp://hdl.handle.net/11449/222843
dc.language.isoeng
dc.relation.ispartofMaterials Research
dc.sourceScopus
dc.subjectAntimicrobial activity
dc.subjectHydroxyapatite
dc.subjectNanotubes coating
dc.subjectSurface modification
dc.subjectTitanium alloy
dc.titleTitanium-tantalum alloy surface modification by hydroxyapatite layer on TiO2 nanotubes: Effect on microbial activityen
dc.typeResenha

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