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dc.contributor.authorSouza, Marcela Oliveira dept_BR
dc.contributor.authorLeitune, Vicente Castelo Brancopt_BR
dc.contributor.authorRodrigues, Stefani Beckerpt_BR
dc.contributor.authorSamuel, Susana Maria Wernerpt_BR
dc.contributor.authorCollares, Fabrício Mezzomopt_BR
dc.date.accessioned2017-07-25T02:29:40Zpt_BR
dc.date.issued2017pt_BR
dc.identifier.issn1806-8324pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/164315pt_BR
dc.description.abstractThe present study aimed to evaluate effects of different surface treatments and aging of composite cylinders on bond strength of composite resin repair. Thirty-two composite cylinders were produced and divided into four groups according to type of surface treatment and storage time of composite cylinder and repair. Cylinder surface of control group (Gcontrol) received no treatment before composite repair. Other groups were sandblasted with aluminum oxide (GAl2O3), followed by silane (GAl2O3sil) or adhesive (GAl2O3ad). Composite cylinders were stored in artificial saliva for either 24 hours or 1 year. Repairs were performed and stored in artificial saliva for 24 hours or 1 year and repair strength was evaluated using microtensile bond strength test. Data were submitted to Student’s t test, two-way ANOVA, and post hoc test for storage time and treatment (α = 0.05). Gcontrol group showed lower values of aging of composite cylinder and storage time of repair (24 hours or 1 year for both) compared with other groups (p < 0.05). GAl2O3ad and GAl2O3sil groups did not exhibit decreased microtensile bond strength with aged repairs (1 year; p > 0.05). Polymer degradation was significant for composite cylinders during the first year of storage in Gcontrol, GAl2O3, and GAl2O3ad groups (p < 0.05). In GAl2O3sil group, storage time of composite cylinders was not significant (p > 0.05). Aging of composite resin influenced bond strength of restoration repair for up to 1 year. Sandblasting with Al2O3, followed by application of silane layer, produced high bond strength after composite or repair aging.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofBrazilian oral research. São Paulo. Vol. 31 (2017), p. e4, 1-7pt_BR
dc.rightsOpen Accessen
dc.subjectMateriais odontologicos : Adesivospt_BR
dc.subjectComposite resinsen
dc.subjectResinas compostaspt_BR
dc.subjectDental restoration failureen
dc.subjectDental restoration repairen
dc.subjectDental bondingen
dc.titleOne-year aging effects on microtensile bond strengths of composite and repairs with different surface treatmentspt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001018842pt_BR
dc.type.originNacionalpt_BR


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