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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effect of Antioxidant Agents on Bond Strength of Composite to Bleached Enamel with 38% Hydrogen Peroxide

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Author(s):
Guimaraes da Silva, Juliane Marcela [1] ; Botta, Ana Carolina [1] ; Barcellos, Daphne Camara [1] ; Pagani, Clovis [1] ; Gomes Torres, Carlos Rocha [1]
Total Authors: 5
Affiliation:
[1] Sao Paulo State Univ UNESP, Sao Jose dos Campos Sch Dent, Sao Jose Dos Campos, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Source: MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS; v. 14, n. 2, p. 235-238, APR-JUN 2011.
Web of Science Citations: 0
Abstract

This study evaluated the effect of antioxidant agents on microtensile bond strengths (mu TBS) of composite to bleached enamel. Fifteen freshly extracted human third molars were selected and randomly assigned to 6 groups (n = 5): (NB) enamel not bleached, (B) bleached enamel, (BR7) bleached enamel and restored 7 days later, (BSA) bleached enamel+sodium ascorbate, (BMC) bleached enamel+malvidin chloride, (BPC) bleached enamel+pelargonidin chloride. The groups were bleached with 38% hydrogen peroxide (HP - Opalescence Xtra Boost) and restored with Single Bond+Filtek Z350. The specimens were thermocycled and submitted to a microtensile load at 1 mm/min crosshead speed. The data were evaluated by ANOVA and Tukey test at 5% of significance. The mean and standard-deviation for all groups were: NB: 30.95(+/- 11.97)a; BSA: 30.34(+/- 8.73)a, BPC: 22.81(6.00)b, BR7: 21.41(+/- 6.12)b, B: 14.10(+/- 4.45)c, BMC: 13.25(+/- 6.02)c. Sodium ascorbate reversed the bond strengths to enamel immediately after bleaching. (AU)