The Role of Lipopolysaccharide on the Electrochemical Behavior of Titanium

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dc.contributor.authorBarao, Valentim Adelino Ricardo [UNESP]
dc.contributor.authorMathew, M. T.
dc.contributor.authorAssunção, Wirley Goncalves [UNESP]
dc.contributor.authorYuan, J. C.
dc.contributor.authorWimmer, M. A.
dc.contributor.authorSukotjo, C.
dc.contributor.institutionUniv Illinois
dc.contributor.institutionRush Univ
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2013-09-30T18:30:11Z
dc.date.accessioned2014-05-20T13:43:46Z
dc.date.available2013-09-30T18:30:11Z
dc.date.available2014-05-20T13:43:46Z
dc.date.issued2011-05-01
dc.description.abstractLipopolysaccharide (LPS) may induce peri-implantitis and implant failure. However, the role of LPS in titanium (Ti) electrochemical behavior remains unknown. We hypothesized that LPS in saliva with different pHs affects Ti corrosion properties. Thirty-six Ti discs (15 mm x 3 mm) were divided into 12 groups according to saliva pH (3, 6.5, and 9) and Escherichia coli LPS concentration (0, 0.15, 15, and 150 mu g/mL). Electrochemical tests, such as open circuit potential, potentiodynamic, and electrochemical impedance spectroscopy, were conducted in a controlled environment. Data were evaluated by Pearson correlation and regression analysis (alpha = 0.05). LPS and pH affected Ti corrosive behavior. In general, lower pH and higher LPS concentration accelerated Ti corrosion. In the control group, the increase of pH significantly reduced the corrosion rate and increased the capacitance of the double layer. In LPS groups, the decrease of pH significantly increased the corrosion rate of Ti. LPS negatively influenced Ti corrosion behavior. Abbreviations: C(dl), capacitance of double layer; E(corr), corrosion potential; EIS, electrochemical impedance spectroscopy; I(corr), corrosion current density; I(pass), passivation current density; LPS, lipopolysaccharide; OCP, open circuit potential; R(p), polarization resistance; Ti, titanium.en
dc.description.affiliationUniv Illinois, Coll Dent, Dept Restorat Dent, Chicago, IL 60612 USA
dc.description.affiliationRush Univ, Med Ctr, Dept Orthoped Surg, Chicago, IL 60612 USA
dc.description.affiliationUniv Estadual Paulista, UNESP, Aracatuba Dent Sch, Dept Dent Mat & Prosthodont, BR-16015050 São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Aracatuba Dent Sch, Dept Dent Mat & Prosthodont, BR-16015050 São Paulo, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipIdCAPES: 4129/09-1
dc.format.extent613-618
dc.identifierhttp://dx.doi.org/10.1177/0022034510396880
dc.identifier.citationJournal of Dental Research. Thousand Oaks: Sage Publications Inc, v. 90, n. 5, p. 613-618, 2011.
dc.identifier.doi10.1177/0022034510396880
dc.identifier.issn0022-0345
dc.identifier.lattes4438747643373395
dc.identifier.urihttp://hdl.handle.net/11449/15300
dc.identifier.wosWOS:000289490000011
dc.language.isoeng
dc.publisherSage Publications Inc
dc.relation.ispartofJournal of Dental Research
dc.relation.ispartofjcr5.380
dc.relation.ispartofsjr2,302
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjecttitaniumen
dc.subjectcorrosionen
dc.subjectEscherichia colien
dc.subjectlipopolysaccharideen
dc.subjectelectrochemistryen
dc.titleThe Role of Lipopolysaccharide on the Electrochemical Behavior of Titaniumen
dc.typeArtigo
dcterms.licensehttps://mc.manuscriptcentral.com/societyimages/wes/WES_ExclusiveLicense.pdf
dcterms.rightsHolderSage Publications Inc
unesp.author.lattes4438747643373395
unesp.author.orcid0000-0002-8903-0737[3]
unesp.author.orcid0000-0002-6391-9917[1]
unesp.author.orcid0000-0003-3604-7938[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Odontologia, Araçatubapt

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Artigos - Materiais Odontológicos e Prótese - FOA