Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/340371
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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampRocha, Mateus Garcia-
dc.contributor.authorunicampOliveira, Dayane Carvalho Ramos Salles de-
dc.contributor.authorunicampSinhoreti, Mário Alexandre Coelho-
dc.contributor.authorunicampCorrer, Americo Bortolazzo-
dc.typeArtigopt_BR
dc.titleThe combination of CQ-amine and TPO increases the polymerization shrinkage stress and does not improve the depth of cure of bulk-fill compositespt_BR
dc.contributor.authorRocha, M. G.-
dc.contributor.authorde Oliveira, D. C. R. S.-
dc.contributor.authorSinhoreti, M. A. C.-
dc.contributor.authorRoulet, J. F.-
dc.contributor.authorCorrer, A. B.-
dc.subjectCompósitospt_BR
dc.subjectPolimerizaçãopt_BR
dc.subject.otherlanguageCompositespt_BR
dc.subject.otherlanguagePolymerizationpt_BR
dc.description.abstractObjectives: To evaluate the effect of combining camphorquinone (CQ) and diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO) on the depth of cure and polymerization shrinkage stress of bulk-fill composites. Methods and Materials: Experimental bulk-fill composites were produced containing equal molar concentrations of either CQ-amine or CQ-amine/TPO. The degree of in-depth conversion through each millimeter of a 4-mm-thick bulk-fill increment was evaluated by Fourier transform near-infrared microspectroscopy using a central longitudinal cross section of the increment of each bulk-fill composite (n=3). Light-transmittance of the multi-wave light-emitting diode (LED) emittance used for photoactivation (Bluephase G2, Ivoclar Vivadent) was recorded through every millimeter of each bulk-fill composite using spectrophotometry. The volumetric shrinkage and polymerization shrinkage stress were assessed using a mercury dilatometer and the Bioman, respectively. The flexural modulus was also assessed by a three-point bend test as a complementary test. Data were analyzed according to the different experimental designs (alpha=0.05 and beta=0.2). Results: Up to 1 mm in depth, adding TPO to CQ-based bulk-fill composites increased the degree of conversion, but beyond 1 mm no differences were found. The light-transmittance of either wavelengths emitted from the multi-wave LED (blue or violet) through the bulk-fill composites were only different up to 1 mm in depth, regardless of the photoinitiator system. Adding TPO to CQ-based bulk-fill composites did not affect volumetric shrinkage but did increase the flexural modulus and polymerization shrinkage stress. Conclusion: Adding TPO to CQ-based bulk-fill composites did not increase the depth of cure. However, it did increase the degree of conversion on the top of the restoration, increasing the polymerization shrinkage stress.pt_BR
dc.relation.ispartofOperative dentistrypt_BR
dc.relation.ispartofabbreviationOper. dent.pt_BR
dc.publisher.cityWashington, DCpt_BR
dc.publisher.countryEstados Unidospt_BR
dc.publisherUniversity of Washington/School of Dentistrypt_BR
dc.date.issued2019-
dc.date.monthofcirculationSept./Oct.pt_BR
dc.language.isoengpt_BR
dc.description.volume44pt_BR
dc.description.issuenumber5pt_BR
dc.description.firstpage499pt_BR
dc.description.lastpage509pt_BR
dc.rightsFechadopt_BR
dc.sourceWOSpt_BR
dc.identifier.issn0361-7734pt_BR
dc.identifier.eissn1559-2863pt_BR
dc.identifier.doi10.2341/18-234-Lpt_BR
dc.identifier.urlhttps://www.jopdentonline.org/doi/full/10.2341/18-234-L?mobileUi=0pt_BR
dc.description.sponsorshipFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESPpt_BR
dc.description.sponsordocumentnumber2016/05823-3; 2017/22161-7; 2016/060193; 2017/22195-9pt_BR
dc.date.available2020-05-07T19:16:13Z-
dc.date.accessioned2020-05-07T19:16:13Z-
dc.description.provenanceSubmitted by Bruna Maria Campos da Cunha (bcampos@unicamp.br) on 2020-05-07T19:16:13Z No. of bitstreams: 0en
dc.description.provenanceMade available in DSpace on 2020-05-07T19:16:13Z (GMT). No. of bitstreams: 0 Previous issue date: 2019en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/340371-
dc.contributor.departmentSem informaçãopt_BR
dc.contributor.departmentSem informaçãopt_BR
dc.contributor.departmentDepartamento de Odontologia Restauradorapt_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.contributor.unidadeFaculdade de Odontologia de Piracicabapt_BR
dc.contributor.unidadeFaculdade de Odontologia de Piracicabapt_BR
dc.identifier.source000483088300007pt_BR
dc.creator.orcidorcid.org/0000-0001-5658-5640pt_BR
dc.creator.orcidorcid.org/0000-0003-1420-5720pt_BR
dc.creator.orcidorcid.org/0000-0002-1932-2902pt_BR
dc.creator.orcidorcid.org/0000-0002-3306-7055pt_BR
dc.type.formArtigopt_BR
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