Influence of nanoparticles on color stability, microhardness, and flexural strength of acrylic resins specific for ocular prosthesis

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dc.contributor.authorAndreotti, Agda Marobo [UNESP]
dc.contributor.authorGoiato, Marcelo Coelho [UNESP]
dc.contributor.authorMoreno, Amalia [UNESP]
dc.contributor.authorNobrega, Adhara Smith [UNESP]
dc.contributor.authorPesqueira, Aldieris Alves [UNESP]
dc.contributor.authorSantos, Daniela Micheline dos [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2015-03-18T15:56:12Z
dc.date.available2015-03-18T15:56:12Z
dc.date.issued2014-12-10
dc.description.abstractThe aim of this study was to assess the effect of adding nanoparticles to N1 acrylic resin intended for artificial sclera, in terms of the color stability, microhardness, and flexural strength of the resin. Three hundred samples of N1 acrylic resin were used: 100 samples for color stability and microhardness tests (each test was performed on the opposite side of each sample), and 200 samples for flexural strength testing (100 samples before and after 1,008 hours of accelerated aging). Samples for each test were separated into ten groups (n = 10), ie, without nanoparticles (control group) or with nanoparticles of zinc oxide, titanium dioxide (TiO2), and barium sulfate at weight concentrations of 1%, 2%, and 2.5% (nanoparticle groups). Data were subjected to statistical analysis with nested analysis of variance and Tukey's test (P < 0.05 significance level). Among the nanoparticle groups, the TiO2 groups showed better color stability at all concentrations. Microhardness values increased after artificial aging, except for the control and zinc oxide groups. After aging, the 1%-2% TiO2 groups had significantly higher microhardness values compared with the other nanoparticle groups. Before aging, there was a significant difference in flexural strength between the control and nanoparticle groups. After aging, the control and TiO2 groups, regardless of concentration, showed the lowest flexural strength values. Incorporation of nanoparticles directly influenced the acrylic resin properties, with TiO2 being the most influential nanoparticle in terms of the evaluated properties.en
dc.description.affiliationSao Paulo State Univ, Aracatuba Dent Sch, Sao Paulo, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Aracatuba Dent Sch, Sao Paulo, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 12/02907-0
dc.format.extent5779-5787
dc.identifierhttp://dx.doi.org/10.2147/IJN.S71533
dc.identifier.citationInternational Journal Of Nanomedicine. Albany: Dove Medical Press Ltd, v. 9, p. 5779-5787, 2014.
dc.identifier.doi10.2147/IJN.S71533
dc.identifier.fileWOS000346253700001.pdf
dc.identifier.issn1178-2013
dc.identifier.lattes9719883814872582
dc.identifier.orcid0000-0002-3800-3050
dc.identifier.urihttp://hdl.handle.net/11449/117455
dc.identifier.wosWOS:000346253700001
dc.language.isoeng
dc.publisherDove Medical Press Ltd
dc.relation.ispartofInternational Journal Of Nanomedicine
dc.relation.ispartofjcr4.370
dc.relation.ispartofsjr1,225
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectacrylic resinsen
dc.subjecteyeen
dc.subjectartificialen
dc.subjectcoloren
dc.subjecthardnessen
dc.subjectnanoparticlesen
dc.titleInfluence of nanoparticles on color stability, microhardness, and flexural strength of acrylic resins specific for ocular prosthesisen
dc.typeArtigo
dcterms.rightsHolderDove Medical Press Ltd
unesp.author.lattes9719883814872582
unesp.author.lattes2336450644149867[5]
unesp.author.orcid0000-0002-3800-3050[2]
unesp.author.orcid0000-0003-3020-5253[5]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Odontologia, Araçatubapt

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