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dc.contributor.authorGarcia, I.M.
dc.contributor.authorLeitune, V.C.B.
dc.contributor.authorMelo, M.A.
dc.date.accessioned2020-04-27T19:48:54Z
dc.date.available2020-04-27T19:48:54Z
dc.date.issued2020
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85083291321&doi=10.3390%2fjfb11010007&partnerID=40&md5=f6845104037ea32c158e6eb8af5fe8fb
dc.identifier.urihttp://hdl.handle.net/10713/12648
dc.description.abstractThe insufficient radiopacity of dental adhesives applied under composite restorations makes the radiographic diagnosis of recurrent caries challenging. Consequently, the misdiagnosis may lead to unnecessary replacement of restorations. The aims of this study were to formulate experimental dental adhesives containing cerium dioxide (CeO2) and investigate the effects of different loadings of CeO2 on their radiopacity and degree of conversion for the first time. CeO2 was characterized by X-ray diffraction analysis, Fourier transforms infrared spectroscopy, and laser diffraction for particle size analysis. Experimental dental adhesives were formulated with CeO2 as the inorganic filler with loadings ranging from 0.36 to 5.76 vol.%. The unfilled adhesive was used as a control. The studied adhesives were evaluated for dispersion of CeO2 in the polymerized samples, degree of conversion, and radiopacity. CeO2 presented a monoclinic crystalline phase, peaks related to Ce-O bonding, and an average particle size of around 16 µm. CeO2 was dispersed in the adhesive, and the addition of these particles increased the adhesives' radiopacity (p < 0.05). There was a significant decrease in the degree of conversion with CeO2 loadings higher than 1.44 vol.%. However, all materials showed a similar degree of conversion in comparison to commercially available adhesives. CeO2 particles were investigated for the first time as a promising compound to improve the radiopacity of the dental adhesives. Copyright 2020 by the authors.en_US
dc.description.sponsorshipThis study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior-Brasil (CAPES) - Finance Code 001 (scholarship)en_US
dc.description.urihttps://doi.org/10.3390/jfb11010007en_US
dc.language.isoen_USen_US
dc.publisherMDPI AGen_US
dc.relation.ispartofJournal of Functional Biomaterials
dc.subjectAdhesivesen_US
dc.subjectCeriumen_US
dc.subjectComposite resinsen_US
dc.subjectDental materialsen_US
dc.subjectDentine bonding agentsen_US
dc.subjectDentistryen_US
dc.subjectLight-curing of dental adhesivesen_US
dc.subjectMethylmethacrylateen_US
dc.subjectOxidesen_US
dc.subjectPolymersen_US
dc.titleCerium dioxide particles to tune radiopacity of dental adhesives: Microstructural and physico-chemical evaluationen_US
dc.typeArticleen_US
dc.identifier.doi10.3390/jfb11010007


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