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dc.titleTribocorrosion Behavior Of Biofunctional Titanium Oxide Films Produced By Micro-arc Oxidation: Synergism And Mechanismsen
dc.contributor.authorVieira Marquespt_BR
dc.contributor.authorIsabella da Silva; Alfaropt_BR
dc.contributor.authorMaria Fernando; da Cruzpt_BR
dc.contributor.authorNilson Cristino; Mesquitapt_BR
dc.contributor.authorMarcelo Ferraz; Takoudispt_BR
dc.contributor.authorChristos; Sukotjopt_BR
dc.contributor.authorCortino; Mathewpt_BR
dc.contributor.authorMathew T.; Ricardo Baraopt_BR
dc.contributor.authorValentim Adelinopt_BR
unicamp.authorRicardo Barao, Valentim Adelino] Univ Campinas UNICAMP, Piracicaba Dent Sch, Dept Prosthodont & Periodontol, Av Limeira 901, BR-13414903 Sao Paulo, Brazilpt_BR[Vieira Marques, Isabella da Silvapt_BR, Marcelo Ferrazpt_BR[Vieira Marques, Isabella da Silvapt_BR, Maria Fernandopt_BR, Christospt_BR, Cortinopt_BR, Mathew T.] IBTN, Chicago, IL USApt_BR[Vieira Marques, Isabella da Silva] IBTN Br Inst Biomat Tribocorros & Nanomed, Brazilian Branch, Sao Paulo, Brazilpt_BR[da Cruz, Nilson Cristino] Univ Estadual Paulista UNESP, Engn Coll, Lab Technol Plasmas, Av Tres Marco 511, BR-18087180 Sao Paulo, Brazilpt_BR[Sukotjo, Cortino] Univ Illinois, Dept Restorat Dent, Coll Dent, 801 S Paulina, Chicago, IL 60612 USApt_BR[Mathew, Mathew T.] Rush Univ, Med Ctr, Dept Orthoped Surg, 1611 W Harrison, Chicago, IL 60612 USApt_BR[Takoudis, Christos] Univ Illinois, Dept Chem Engn, 851 S Morgan St,SEO 218, Chicago, IL 60607 USApt_BR[Takoudis, Christos] Univ Illinois, Dept Bioengn, 851 S Morgan St,SEO 218, Chicago, IL 60607 USApt_BR
dc.subjectDental Implantsen
dc.subjectBioactive Coatingsen
dc.description.abstractDental implants, inserted into the oral cavity, are subjected to a synergistic interaction of wear and corrosion (tribocorrosion), which may lead to implant failures. The objective of this study was to investigate the tribocorrosion behavior of Ti oxide films produced by micro-arc oxidation (MAO) under oral environment simulation. MAO was conducted under different conditions as electrolyte composition: Ca/P (0.3 M/0.02 M or 0.1 M/0.03 M) incorporated with/without Ag (0.62 g/L) or Si (0.04 M); and treatment duration (5 and 10 min). Non-coated and sandblasted samples were used as controls. The surfaces morphology, topography and chemical composition were assessed to understand surface properties. ANovA and Tukey's HSD tests were used (a=0.05). Biofunctional porous oxide layers were obtained. Higher Ca/P produced larger porous and harder coatings when compared to non coated group (p < 0.001), due to the presence of ruffle crystalline structure. The total mass loss (K-wc), which includes mass loss due to wear (K-w) and that due to corrosion (K-c) were determined. The dominant wear regime was found for higher Ca/P groups (K-c/K-w approximate to 0.05) and a mechanism of wear-corrosion for controls and lower Ca/P groups (K-c/K-w approximate to 0.11). The group treated for 10 min and enriched with Ag presented the lowest K-wc (p < 0.05). Overall, MAO process was able to produce biofunctional oxide films with improved surface features, working as tribocorrosion resistant surfaces. (C) 2015 Elsevier Ltd. All rights reserved.en
dc.relation.ispartofJournal of The Mechanical Behavior of Biomedical Materialspt_BR
dc.publisherElsevier Science BVpt_BR
dc.identifier.citationJournal Of The Mechanical Behavior Of Biomedical Materials. Elsevier Science Bv, v. 60, p. 8 - 21, 2016.pt_BR
dc.description.sponsorshipCoordination for the Improvement of Higher Level Personnel (CAPES) from Brazil [PDSE Proc. 11838-13-2]pt_BR
dc.description.sponsorshipState of Sao Paulo Research Foundation (FAPESP) [2013/08451-1]pt_BR
dc.description.sponsorshipNational Science Foundation (NSF) [1067424]pt_BR
dc.description.sponsorshipNIH [R03 AR064005]pt_BR
dc.description.sponsorship1Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt_BR
dc.description.sponsorship1Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.provenanceMade available in DSpace on 2017-11-13T13:24:27Z (GMT). No. of bitstreams: 1 000378969100002.pdf: 5714479 bytes, checksum: 5cfce9323875d94138e648b0fc00ae8a (MD5) Previous issue date: 2016en
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