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Influence of delay between dental bleaching with 35% hydrogen peroxide and orthodontic brackets on the bond strength at the enamel/adhesive interface

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Influence of delay between dental bleaching with 35% hydrogen peroxide and orthodontic brackets on the bond strength at the enamel/adhesive interface

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dc.contributor.author de Almeida, Antônio-Augusto-Lima es
dc.contributor.author Lima, Darlon-Martins es
dc.contributor.author Pereira, Adriana-de Fátima-Vasconcelos es
dc.contributor.author Sousa, Soraia-de Fátima-Carvalho es
dc.contributor.author Alves, Cláudia M.C es
dc.date.accessioned 2019-07-24T11:37:52Z
dc.date.available 2019-07-24T11:37:52Z
dc.date.issued 2019 es
dc.identifier.citation de Almeida, Antônio-Augusto-Lima ; Lima, Darlon-Martins ; Pereira, Adriana-de Fátima-Vasconcelos ; Sousa, Soraia-de Fátima-Carvalho ; Alves, Cláudia M.C. Influence of delay between dental bleaching with 35% hydrogen peroxide and orthodontic brackets on the bond strength at the enamel/adhesive interface. En: Journal of Clinical and Experimental Dentistry, 11 5 2019: 447-451 es
dc.identifier.uri https://hdl.handle.net/10550/71104
dc.description.abstract The aim of this study was to evaluate the influence of waiting time between the bleaching with 35% hydrogen peroxide and orthodontic brackets bonding on shear bond strength (SBS) in enamel. Eighty bovine teeth were randomly divided into four groups (G): G1(negative control) and G2, G3 and G4 (experimental groups). The experimental groups were submitted to bleaching. Prior to orthodontic brackets bonding to enamel the procedure was adopted different waiting times, as follows: G2 (1 day); G3 (7 days) and G4 (14 days). It was performed enamel etching (30s), washing water (30s), application of adhesive system followed by photoactivation (20s). A thin layer of composite resin was placed between the adhesive and the brackets. The applied pressure was measured by tensiometer (300N/40s). The composite resin was light-cured (40s). After 24 hours the shear test was held (0.5mm/min). To compare the SBS it was used ANOVA one-way followed by Tukey test (? = 0.05). The Adhesive Remaining Index (ARI) was analyzed using the Kruskal-Wallis test. The SBS values were significantly lower in G2 (15.51 MPa) and G3 (17.77 MPa) compared to G1 (30.14 MPa) and G4 (28.50 MPa) (p<0.05). The ARI revealed significant difference between the G3 and the other groups (p<0.05). It was concluded that the bond strength in enamel in the interfaces/adhesive system/composite resin/orthodontic brackets was more effective 14 days after the bleaching with 35% hydrogen peroxide. es
dc.title Influence of delay between dental bleaching with 35% hydrogen peroxide and orthodontic brackets on the bond strength at the enamel/adhesive interface es
dc.type journal article es_ES
dc.subject.unesco UNESCO::CIENCIAS MÉDICAS es
dc.identifier.doi 10.4317/jced.55719 es
dc.type.hasVersion VoR es_ES

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