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首页> 外文期刊>The Journal of Prosthetic Dentistry >The effect of current bleaching agents on the color of light-polymerized composites in vitro.
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The effect of current bleaching agents on the color of light-polymerized composites in vitro.

机译：目前的漂白剂在体外对光聚合复合材料颜色的影响。

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STATEMENT OF PROBLEM: Bleaching agents may affect the color of existing composite restorations. PURPOSE: The purpose of this study was to compare the effect of 10% carbamide peroxide and 10% hydrogen peroxide on the color of light-polymerized hybrid, macrofilled, and polyacid-modified composites. MATERIAL AND METHODS: Two light-polymerized hybrid composites (3M Valux and Spectrum TPH), 1 macrofilled condensable composite (Solitaire), and 2 polyacid-modified composites (Dyract AP and Compoglass) were used. The hybrid composites served as controls. The color of 8 specimens of each material was analyzed by use of a spectrophotometer before bleaching. The specimens were then divided randomly into 2 subgroups (n=4). One group was immersed in 10% carbamide peroxide solution and the other in 10% hydrogen peroxide, for 8 hours each for 14 consecutive days. After bleaching, color changes (Delta E) were determined for each material and compared by use of the Kruskal-Wallis test, followed by the Mann-Whitney U test (P<.05). RESULTS: After bleaching with carbamide peroxide, the color changes (Delta E) for Dyract AP (2.18; SD = 1.41), Compoglass (1.14; SD = 0.26) and Solitaire (1.56; SD = 0.89) were higher than the color changes recorded for 3M Valux (0.63; SD = 3.60), and Spectrum TPH (0.66; SD = 1.24). The differences between materials bleached with carbamide peroxide were not statistically significant. After bleaching with hydrogen peroxide, the color changes for Dyract AP (9.39; SD = 0.53) and Compoglass (5.15; SD = 0.52) were higher than the changes recorded for Spectrum TPH (4.53; SD = 1.53) and 3M Valux (3.41; SD = 4.40), whereas the color change of Solitaire (3.69; SD = 0.57) was significantly higher than that of 3M Valux (P=.01). The color changes for all restorative materials tested were clinically detectable after the application of 10% hydrogen peroxide. However, clinically noticeable discoloration was observed only for Dyract AP treated with 10% carbamide peroxide. CONCLUSION: In comparison to 10% carbamide peroxide, 10% hydrogen peroxide caused more color changes in the composites tested.
机译：问题陈述：漂白剂可能会影响现有复合修复体的颜色。目的：本研究的目的是比较10％的过氧化脲和10％的过氧化氢对光聚合杂化材料，大填充和多酸改性复合材料颜色的影响。材料和方法：使用了两种轻聚合的杂化复合材料（3M Valux和Spectrum TPH），一种大填充的可冷凝复合材料（纸牌）和两种多元酸改性的复合材料（Dyract AP和Compoglass）。杂化复合材料用作对照。在漂白之前，使用分光光度计分析每种材料的8个样品的颜色。然后将标本随机分为2个亚组（n = 4）。一组浸入10％过氧化脲溶液中，另一组浸入10％过氧化氢中，连续14天，每次8小时。漂白后，确定每种材料的颜色变化（Delta E），并使用Kruskal-Wallis试验进行比较，然后使用Mann-Whitney U试验进行比较（P <.05）。结果：用过氧化脲漂白后，Dyract AP（2.18; SD = 1.41），Compoglass（1.14; SD = 0.26）和纸牌（1.56; SD = 0.89）的颜色变化（ΔE）高于记录的颜色变化3M Valux（0.63; SD = 3.60）和Spectrum TPH（0.66; SD = 1.24）。用过氧化脲漂白的材料之间的差异没有统计学意义。用过氧化氢漂白后，Dyract AP（9.39; SD = 0.53）和Compoglass（5.15; SD = 0.52）的颜色变化高于Spectrum TPH（4.53; SD = 1.53）和3M Valux（3.41; SD = 4.40），而纸牌（3.69; SD = 0.57）的颜色变化明显高于3M Valux（P = .01）。在使用10％的过氧化氢后，在临床上可检测到所有测试的修复材料的颜色变化。但是，只有用10％过氧化脲处理的Dyract AP才能观察到临床上明显的变色。结论：与10％的过氧化脲相比，10％的过氧化氢在测试的复合材料中引起了更多的颜色变化。

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