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Type: Artigo de periódico
Title: Can green tea be used to reverse compromised bond strength after bleaching?
Author: Berger, SB
Carreira, RPD
Guiraldo, RD
Lopes, MB
Pavan, S
Giannini, M
Bedran-Russo, AK
Abstract: The objective of this study was to evaluate the antioxidant effect of green tea on microtensile bond strength (TBS) to bleached enamel. Forty-two human third molars were randomly divided into six experimental groups (n=7 each group): group 1, no treatment; group 2, bleaching (10% carbamide peroxide); group 3, bleaching+10% sodium ascorbate gel (SA); group 4, bleaching+10% green tea gel (GT); group 5, SA; and group 6, GT. In groups 2, 3, and 4, bleach was applied onto the enamel surface for 6h, every day for 14d. In groups 3 and 5, SA was applied for 1h; and in groups 4 and 6, GT was applied for 1h. Immediately after treatment, the specimens were bonded with Adper Single Bond 2 and Filtek Z350 XT. The TBS of the specimens was tested using a universal testing machine. Fracture mode analysis of the bonded enamel surface was performed using scanning electron microscopy. The mean TBS values for each group were: group 1, 33.2 +/- 5.8MPa; group 2, 22.6 +/- 5.5MPa; group 3, 30.0 +/- 5.2MPa; group 4, 31.6 +/- 3.8MPa; group 5, 29.1 +/- 4.2MPa; and group 6, 32.2 +/- 4.5MPa. All groups had a higher percentage of mixed failures. In conclusion, green tea can be used as an alternative antioxidant on bleached enamel before bonding procedures.
Subject: adhesion
dental bleaching
green tea
Country: EUA
Editor: Wiley-blackwell
Citation: European Journal Of Oral Sciences. Wiley-blackwell, v. 121, n. 4, n. 377, n. 381, 2013.
Rights: fechado
Identifier DOI: 10.1111/eos.12062
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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