Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/337299
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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampMarin Fronza, Bruna-
dc.contributor.authorunicampGiannini, Marcelo-
dc.typeArtigopt_BR
dc.titleModification of filler surface treatment of composite resins using alternative silanes and functional nanogelspt_BR
dc.contributor.authorFronza, Bruna Marin-
dc.contributor.authorLewis, Steven-
dc.contributor.authorShah, Parag K.-
dc.contributor.authorBarros, Matthew D.-
dc.contributor.authorGiannini, Marcelo-
dc.contributor.authorStansbury, Jeffrey W.-
dc.subjectMetacrilatospt_BR
dc.subjectSilanizaçãopt_BR
dc.subjectPolimerizaçãopt_BR
dc.subjectPolymerizationpt_BR
dc.subject.otherlanguageMethacrylatespt_BR
dc.subject.otherlanguageSilanizationpt_BR
dc.subject.otherlanguageMecânicapt_BR
dc.subject.otherlanguageMechanicspt_BR
dc.description.abstractThis study probes how modifiedapproaches for filler surface treatment in dental composites based on alternative silanes and functional nanogel additives affects physicochemical properties of these materials with a focus on polymerization stress development. Nanogels were synthesized from isobornyl methacrylate, ethoxylated bisphenol-A dimethacrylate and isocyanatoethyl methacrylate followed by partial further reaction with 2-hydroxyethyl methacrylate to provide both isocyanate and methacrylate functionalization. A barium glass filler (˜1 μm particle size) was treated with either γ-methacryloxypropyltrimethoxysilane (MPS), N-methylaminopropyltrimethoxy (MAP) or N-allylaminopropyltrimethoxy (AAP) silanes. The reactive nanogels were then covalently attached to the aminosilane-treated fillers. Surface treatment was characterized by thermogravimetric analysis (TGA) and diffuse reflectance infrared spectroscopy (DR-IR). Composites were formulated with 60 wt% of the various functionalized fillers and the materials were evaluated for polymerization kinetics, polymerization stress (PS), volumetric shrinkage, mechanical properties and photorheology. Data were evaluated by one-way ANOVA and Tukey’s test at 5% significance level. Filler surface treatments were confirmed by TGA and DR-IR analyses. Nanogel-functionalized fillers significantly reduced PS up to 20%, while the degree of conversion and elastic modulus were not compromised. Similar storage modulus development during polymerization was observed among materials by photorheology although the rate of polymerization was significantly increased for nanogel-based treatments. A significant decrease in flexural strength was observed for amino functional silane groups; however, there was no statistical difference in strength for the MPS control group compared with the nanogel-modified composites. Filler surface treatment modified with a reactive nanogel enables significant PS reduction, without compromise to degree of conversion or mechanical properties of dental compositespt_BR
dc.relation.ispartofDental Materialspt_BR
dc.relation.ispartofabbreviationDent materpt_BR
dc.publisher.cityKidlintonpt_BR
dc.publisher.countryInglaterrapt_BR
dc.publisherElsevierpt_BR
dc.date.issued2019-06-
dc.date.monthofcirculationJun.pt_BR
dc.language.isoengpt_BR
dc.description.volume35pt_BR
dc.description.issuenumber6pt_BR
dc.description.firstpage928pt_BR
dc.description.lastpage936pt_BR
dc.rightsFechadopt_BR
dc.sourceWOSpt_BR
dc.identifier.issn0109-5641pt_BR
dc.identifier.eissn1879-0097pt_BR
dc.identifier.doi10.1016/j.dental.2019.03.007pt_BR
dc.identifier.urlhttps://www.sciencedirect.com/science/article/pii/S0109564119300910pt_BR
dc.description.sponsorshipFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESPpt_BR
dc.description.sponsordocumentnumber2015/23104-1; 2016/05035-5pt_BR
dc.date.available2020-03-24T19:46:06Z-
dc.date.accessioned2020-03-24T19:46:06Z-
dc.description.provenanceSubmitted by Susilene Barbosa da Silva (susilene@unicamp.br) on 2020-03-24T19:46:06Z No. of bitstreams: 0en
dc.description.provenanceMade available in DSpace on 2020-03-24T19:46:06Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-06en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/337299-
dc.contributor.departmentSem informaçãopt_BR
dc.contributor.departmentDepartamento de Odontologia Restauradorapt_BR
dc.contributor.unidadeFaculdade de Odontologia de Piracicabapt_BR
dc.contributor.unidadeFaculdade de Odontologia de Piracicabapt_BR
dc.subject.keywordComposite resinpt_BR
dc.subject.keywordFillerspt_BR
dc.subject.keywordSocyanatespt_BR
dc.subject.keywordNanogelspt_BR
dc.subject.keywordSurface treatmentpt_BR
dc.identifier.source000467391600013pt_BR
dc.creator.orcid0000-0002-8444-3225pt_BR
dc.creator.orcid0000-0003-0443-0115pt_BR
dc.type.formArtigopt_BR
dc.description.sponsorNoteWe would like to acknowledge Dentsply Sirona for donation of the glass filler used in this study. This research was supported by National Institutes of Health (NIH/NIDCRR01DE022348) and São Paulo Research Foundation (2015/23104-1 and 2016/05035-5)pt_BR
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