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Effect of shear bond strength of metallic orthodontic brackets bonded with and without dental adhesive

dc.contributor.authorMonteiro, Jaiane Bandoli [UNESP]
dc.contributor.authorAbreu, Ricardo Toledo [UNESP]
dc.contributor.authorSalgado, Lívia
dc.contributor.authorParadella, Thaís Cachuté [UNESP]
dc.contributor.authorSalgado, Ivone de Oliveira
dc.contributor.authorCilli, Renato
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2019-10-06T16:07:13Z
dc.date.available2019-10-06T16:07:13Z
dc.date.issued2018-01-01
dc.description.abstractObjective: The aim of this study was to evaluate the shear bond strength (SBS) of two materials for bonding orthodontic brackets on dental enamel before and after thermocycling. Material and Methods: Forty bovine incisors were divided into four groups (n=10). All teeth were etched with 35% phosphoric acid (3M Espe). For bonding of the brackets, G1 and G2 received orthodontic composite resin (Fill Magic Ortodôntico) and G3 and G4, an adhesive (ScotchBond) was used before the orthodontic resin Transbond XT (3M Unitek). G1 and G3 were kept at 37ºC for 24h and G2 and G4 were submitted to thermocycling (5000 cycles, at 5ºC-55ºC) prior to SBS testing, performed by a universal machine (EMIC) at 1 mm/min, with a 50kgf load cell. Results were analyzed with two-way ANOVA, followed by Tukey’s test (p=0.05). Adhesive surfaces were evaluated through stereomicroscopy and classified according to the type of failure presented. Results: Surface treatment with dental adhesive presented higher SBS values, regardless thermocycling (G3: 12.01 MPa; G4: 12.36 MPa) and the lowest values occurred in G2 (8.89 MPa). For groups without adhesive and with thermocycling, a higher number of completely adhesive failures between composite and enamel were present. For groups in which dental adhesive was used, regardless thermocycling, the failures were mainly adhesive between composite and the bracket. Conclusion: Surface etching of enamel with 35% phosphoric acid with or without adhesive showed a positive effect on SBS. The application of adhesive on enamel surface contributed to the maintenance of SBS values after thermocycling.en
dc.description.affiliationSão Paulo State University (Unesp) – Institute of Science and Technology São José dos Campos – Department of Dental Materials and Prosthodontics
dc.description.affiliationSão Paulo State University (Unesp) – Institute of Science and Technology São José dos Campos – Department of Restorative Dentistry
dc.description.affiliationDepartment of Restorative Dentistry – Juiz de Fora Federal University – School of Dentistry (UFJF)
dc.description.affiliationSão Paulo State University (Unesp) – Institute of Science and Technology São José dos Campos – Department of Biosciences and Oral Diagnosis
dc.description.affiliationUnespSão Paulo State University (Unesp) – Institute of Science and Technology São José dos Campos – Department of Dental Materials and Prosthodontics
dc.description.affiliationUnespSão Paulo State University (Unesp) – Institute of Science and Technology São José dos Campos – Department of Restorative Dentistry
dc.description.affiliationUnespSão Paulo State University (Unesp) – Institute of Science and Technology São José dos Campos – Department of Biosciences and Oral Diagnosis
dc.format.extent395-402
dc.identifierhttp://dx.doi.org/10.14295/bds.2018.v21i4.1597
dc.identifier.citationBrazilian Dental Science, v. 21, n. 4, p. 395-402, 2018.
dc.identifier.doi10.14295/bds.2018.v21i4.1597
dc.identifier.issn2178-6011
dc.identifier.scopus2-s2.0-85057260184
dc.identifier.urihttp://hdl.handle.net/11449/188413
dc.language.isoeng
dc.relation.ispartofBrazilian Dental Science
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectAging
dc.subjectComposite resins
dc.subjectOrthodontic brackets
dc.subjectShear strength
dc.titleEffect of shear bond strength of metallic orthodontic brackets bonded with and without dental adhesiveen
dc.titleEfeito da resistência ao cisalhamento de braquetes ortodônticos unidos com e sem adesivo dentáriopt
dc.typeArtigo
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Ciência e Tecnologia, São José dos Campospt
unesp.departmentBiociências e Diagnóstico Bucal - ICTpt
unesp.departmentMateriais Odontológicos e Prótese - ICTpt
unesp.departmentOdontologia Restauradora - ICTpt

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