The aim was to evaluate the effect of different antioxidant agents on the improvement of bond strength to enamel subjected to a whitening procedure. Samples were divided into six groups (n = 10): control; whitening immediately followed by restorative treatment (WHT); whitening and restoration after a 7-day period (WHT_7D); whitening and application of 10% sodium ascorbate (WHT_SA); application of 5% grape seed extract (WHT_GS); and application of 5% green tea (WHT_GT). All groups except for control fwere whitened (Opalescence PF Regular 16%) for 7 days (4 h/day). All samples were restored (Optibond™ FL, Kerr and Filtek™ Z250 composite, 3M ESPE). In antioxidant groups these were applied for 15 min and immediately restored. Specimens were sectioned in microspecimens (1.0 ± 0.2 mm2 area) for microtensile bond strength (μTBS) testing (0.5 mm/min) on a universal testing machine. ANOVA test with Brown-Forsythe correction and Games-Howell post-hoc test was used (significance level of 5%). Antioxidant groups presented significant higher mean μTBS values than group WHT (p < 0.001). The non-whitened control group was not significantly different to antioxidant experimental groups. Group WHT_7D exhibited a significantly higher mean μTBS value when compared to group WHT (p = 0.022). The different antioxidants significantly influenced microtensile bond strength of restored teeth after whitening.

中文翻译：

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抗氧化预处理能够减少牙齿漂白后修复治疗的等待时间：微拉伸粘合强度探索性研究

目的是评估不同抗氧化剂对经过增白程序的牙釉质粘合强度的提高的影响。样品分为六组（n = 10）：对照；立即美白，然后进行修复性治疗 (WHT)；7 天后的美白和修复 (WHT_7D)；10% 抗坏血酸钠 (WHT_SA) 的美白和应用；应用 5% 葡萄籽提取物 (WHT_GS)；和应用 5% 绿茶 (WHT_GT)。除对照以外的所有组都变白（Opalescence PF Regular 16%）7 天（4 小时/天）。恢复所有样品（Optibond™ FL、Kerr 和 Filtek™ Z250 复合材料、3M ESPE）。在抗氧化剂组中，这些被应用 15 分钟并立即恢复。将样品切成显微样品（1.0 ± 0.2 mm2 面积）以进行微拉伸粘合强度 (μTBS) 测试 (0. 5 毫米/分钟）在万能试验机上。使用带有 Brown-Forsythe 校正的 ANOVA 检验和 Games-Howell 事后检验（显着性水平为 5%）。抗氧化组的平均 μTBS 值显着高于 WHT 组（p < 0.001）。未增白对照组与抗氧化实验组无显着差异。与 WHT 组相比，WHT_7D 组表现出显着更高的平均 μTBS 值（p = 0.022）。不同的抗氧化剂显着影响美白后修复牙齿的微拉伸粘合强度。未增白对照组与抗氧化实验组无显着差异。与 WHT 组相比，WHT_7D 组表现出显着更高的平均 μTBS 值（p = 0.022）。不同的抗氧化剂显着影响美白后修复牙齿的微拉伸粘合强度。未增白对照组与抗氧化实验组无显着差异。与 WHT 组相比，WHT_7D 组表现出显着更高的平均 μTBS 值（p = 0.022）。不同的抗氧化剂显着影响美白后修复牙齿的微拉伸粘合强度。