Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/348809
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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampGiannini, Marcelo-
dc.typeArtigopt_BR
dc.titleEffects of ultramorphological changes on adhesion to lased dentin-scanning electron microscopy and transmission electron microscopy analysispt_BR
dc.contributor.authorMoretto, S.G.-
dc.contributor.authorAzambuja, N.-
dc.contributor.authorArana-Chavez, V.E.-
dc.contributor.authorReis, A.F.-
dc.contributor.authorGiannini, M.-
dc.contributor.authorEduardo, C.D.P.-
dc.contributor.authorDe Freitas, P.M.-
dc.subjectDentinapt_BR
dc.subject.otherlanguageDentinpt_BR
dc.description.abstractDentin irradiation with erbium lasers has been reported to alter the composite resin bond to this treated surface. There is still a lack of studies reporting the effect of erbium lasers on dentin organic content and elucidating how laser treatment could interfere in the quality of the resin-dentin interface. This study aimed to evaluate the effect of erbium laser irradiation on dentin morphology and microtensile bond strength (μTBS) of an adhesive to dentin. Seventy-two dentin disks were divided into nine groups (n = 8): G1-Control (600-grit SiC paper); Er:YAG groups: G2-250 mJ/4 Hz; G3-200 mJ/4 Hz; G4-180 mJ/10 Hz; G5-160 mJ/10 Hz; Er,Cr:YSGG groups: G6-2 W/20 Hz; G7-2.5 W/20 Hz; G8-3 W/20 Hz; G9-4 W/20 Hz. Specimens were processed for cross-sectional analysis by scanning electron microscopy (SEM) (n = 3), transmission electron microscopy (TEM) (n = 2), and adhesive interface (n = 3). Forty-five dentin samples (n = 5) were restored and submitted to μTBS testing. ANOVA (α = 5%) revealed that G1 presented the highest μTBS values and irradiated groups did not differ from each other. TEM micrographs showed a superficial layer of denatured collagen fibrils. For SEM micrographs, it was possible to verify the laser effects extending to dentin subsurface presenting a rough aspect. Cross-sectional dentin micrographs of this hybridized surface revealed a pattern of modified tags with ringlike structures around it. This in vitro study showed that erbium laser irradiation interacts with the dental hard tissue resulting in a specific morphological pattern of dentin and collagen fibrils that negatively affected the bond strength to composite resin.pt_BR
dc.relation.ispartofMicroscopy research and techniquept_BR
dc.relation.ispartofabbreviationMicrosc. res. tech.pt_BR
dc.publisher.cityHoboken, NJpt_BR
dc.publisher.countryEstados Unidospt_BR
dc.publisherJohn Wiley & Sonspt_BR
dc.date.issued2011-
dc.date.monthofcirculationAug.pt_BR
dc.language.isoengpt_BR
dc.description.volume74pt_BR
dc.description.issuenumber8pt_BR
dc.description.firstpage720pt_BR
dc.description.lastpage726pt_BR
dc.rightsFechadopt_BR
dc.sourceScopuspt_BR
dc.identifier.issn1059-910Xpt_BR
dc.identifier.eissn1097-0029pt_BR
dc.identifier.doi10.1002/jemt.20949pt_BR
dc.identifier.urlhttps://onlinelibrary.wiley.com/doi/full/10.1002/jemt.20949pt_BR
dc.date.available2020-09-08T11:59:57Z-
dc.date.accessioned2020-09-08T11:59:57Z-
dc.description.provenanceSubmitted by Bruna Maria Campos da Cunha (bcampos@unicamp.br) on 2020-09-08T11:59:57Z No. of bitstreams: 0. Added 1 bitstream(s) on 2021-01-04T15:12:48Z : No. of bitstreams: 1 2-s2.0-79960608611.pdf: 685194 bytes, checksum: 6104d0fdb8cb41bfaa4d637f6133ac5d (MD5)en
dc.description.provenanceMade available in DSpace on 2020-09-08T11:59:57Z (GMT). No. of bitstreams: 0 Previous issue date: 2011en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/348809-
dc.contributor.departmentDepartamento de Odontologia Restauradorapt_BR
dc.contributor.unidadeFaculdade de Odontologia de Piracicabapt_BR
dc.subject.keywordAdhesionpt_BR
dc.subject.keywordCollagen fibrilspt_BR
dc.subject.keywordErbium laserspt_BR
dc.subject.keywordResin tagspt_BR
dc.identifier.source2-s2.0-79960608611pt_BR
dc.creator.orcid0000-0003-0443-0115pt_BR
dc.type.formArtigopt_BR
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