de Andrade Isabel Cristina G Bandeira, Basting Roberta Tarkany, Lima-Arsati Ynara Bosco de Oliveira, do Amaral Flávia Lucisano Botelho, Rodrigues José Augusto, França Fabiana Mantovani Gomes
Department of Dental Materials, Regional University of Blumenau (FURB), Blumenau, Santa Catarina, Brazil.
Am J Dent. 2011 Aug;24(4):245-9.
To investigate the effect of bleaching and staining solutions on roughness and shade changes in a nanofilled resin composite [Filtek Supreme (FS)].
FS specimens (n = 135) were light cured and separated into groups (n = 45) that were bleached with 10% carbamide peroxide (CP) agent or 16% or 35% hydrogen peroxide (HP). In the first two groups the bleaching gel was used for 4 hours a day, during 14 days, and for the third group in three sessions of 45 minutes. Each group was subdivided (n = 15) and immersed in coffee, red wine or distilled water for 3 hours a day during 40 days. The roughness values (Ra) and shade (parameter CLELab) were evaluated at baseline, after bleaching and after staining. The data was analyzed by ANOVA and Tukey test or Kruskal Wallis.
The effects on specimens varied depending on the bleaching product and staining solution. FS after bleaching and after staining presented higher roughness. In the evaluation of shade changes after bleaching, it was observed that resin color changed and that 35% hydrogen peroxide bleached the resin more than the others. After staining in three solutions, all specimens changed color and wine showed the higher staining capacity.
研究漂白剂和染色溶液对纳米填充树脂复合材料[Filtek Supreme（FS）]粗糙度和颜色变化的影响。
将FS试件（n = 135）光固化后分成几组（n = 45），分别用10%过氧化脲（CP）试剂、16%或35%过氧化氢（HP）进行漂白。在前两组中，漂白凝胶每天使用4小时，持续14天，第三组则分三次每次45分钟使用。每组再细分（n = 15），并在40天内每天浸泡在咖啡、红酒或蒸馏水中3小时。在基线、漂白后和染色后评估粗糙度值（Ra）和颜色（CIELab参数）。数据采用方差分析和Tukey检验或Kruskal Wallis检验进行分析。
对试件的影响因漂白产品和染色溶液而异。FS在漂白后和染色后粗糙度更高。在评估漂白后的颜色变化时，观察到树脂颜色发生了变化，且35%过氧化氢对树脂的漂白效果比其他试剂更好。在三种溶液中染色后，所有试件都发生了颜色变化，红酒的染色能力最强。
