Microbiological or Chemical Models of Enamel Secondary Caries Compared by Polarized-Light Microscopy and Energy Dispersive X-ray Spectroscopy

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dc.contributor.authorParadella, Thais Cachute [UNESP]
dc.contributor.authorCervantes Garcia de Sousa, Fernando Augusto [UNESP]
dc.contributor.authorKoga-Ito, Cristiane Yumi [UNESP]
dc.contributor.authorCardoso Jorge, Antonio Olavo [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T14:04:33Z
dc.date.available2014-05-20T14:04:33Z
dc.date.issued2009-08-01
dc.description.abstractDifferent secondary caries models may present different results. The purpose of this study was to compare different in vitro secondary caries models, evaluating the obtained results by polarized-light microscopy (PLM), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS). Standardized human enamel specimens (n = 12) restored with different materials (Z250 conventional composite resin-CRZ, Freedom polyacid-modified composite resin-CRF, Vitremer resin-modified glass-ionomer-GIV, and Fuji IX conventional glass-ionomer cement-GIF) were submitted to microbiological (MM) or chemical caries models (CM). The control group was not submitted to any caries model. For MM, specimens were immersed firstly in sucrose broth inoculated with Streptococcus mutans ATCC 35688, incubated at 37 degrees C/5% CO(2) for 14 days and then in remineralizing solution for 14 days. For CM, specimens were submitted to chemical pH-cycling. Specimens were ground, submitted to PLM and then were dehydrated, gold-sputtered and submitted to SEM and EDS. Results were statistically analyzed by Kruskall-Wallis and Student-Newman-Keuls tests (alpha = 0.05). No differences between in vitro caries models were found. Morphological differences in enamel demineralization were found between composite resin and polyacid-modified composite resin (CRZ and CRF) and between the resin-modified glass-ionomer and the glass-ionomer cement (GIF and GIV). GIF showed higher calcium concentration and less demineralization, differing from the other materials. In conclusion, the glass-ionomer cement showed less caries formation under both in vitro caries models evaluated. (C) 2009 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 90B: 635-640, 2009en
dc.description.affiliationSão Paulo State Univ, UNESP, Sao Jose Campos Dent Sch, Dept Biosci & Oral Diag, Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUnespSão Paulo State Univ, UNESP, Sao Jose Campos Dent Sch, Dept Biosci & Oral Diag, Sao Jose Dos Campos, SP, Brazil
dc.format.extent635-640
dc.identifierhttp://dx.doi.org/10.1002/jbm.b.31328
dc.identifier.citationJournal of Biomedical Materials Research Part B-applied Biomaterials. Hoboken: Wiley-liss, v. 90B, n. 2, p. 635-640, 2009.
dc.identifier.doi10.1002/jbm.b.31328
dc.identifier.issn1552-4973
dc.identifier.lattes0053567153623569
dc.identifier.lattes6543563161403421
dc.identifier.orcid0000-0002-2416-2173
dc.identifier.urihttp://hdl.handle.net/11449/22648
dc.identifier.wosWOS:000268114200019
dc.language.isoeng
dc.publisherWiley-liss
dc.relation.ispartofJournal of Biomedical Materials Research Part B: Applied Biomaterials
dc.relation.ispartofjcr3.373
dc.relation.ispartofsjr0,715
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectsecondary cariesen
dc.subjectcaries modelen
dc.subjectfluorideen
dc.subjectStreptococcus mutansen
dc.titleMicrobiological or Chemical Models of Enamel Secondary Caries Compared by Polarized-Light Microscopy and Energy Dispersive X-ray Spectroscopyen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderWiley-liss
unesp.author.lattes0053567153623569[4]
unesp.author.lattes6543563161403421[3]
unesp.author.orcid0000-0002-1747-6158[4]
unesp.author.orcid0000-0002-2416-2173[3]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciência e Tecnologia, São José dos Campospt

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