Nascimento Helanne de Oliveira do, Vieira Junior Waldemir Francisco, Basting Roberta Tarkany, Turssi Cecília Pedroso, Amaral Flávia Lucisano Botelho do, França Fabiana Mantovani Gomes
Faculty São Leopoldo Mandic, São Leopoldo Mandic Research Institute, Campinas, São Paulo, Brazil.
Faculty São Leopoldo Mandic, São Leopoldo Mandic Research Institute, Campinas, São Paulo, Brazil,
Am J Dent. 2022 Feb;35(1):37-42.
To evaluate the effect of polishing systems (discs or rubbers) on surface roughness (Ra) and color change (ΔE) of two bulk fill and one conventional resin composite after immersion in a dye solution.
180 samples (10 mm x 2 mm) were separated into three groups: (1) Resin composite: Filtek One Bulk Fill (FO), Tetric N-Ceram Bulk Fill (TNC), Filtek Z350 XT (FXT) (n= 60); (2) polishing system: unpolished (control); aluminum oxide discs (Sof-Lex, AOD); cup-shaped abrasive rubber polishers (Astropol, CSA) (n= 20), and (3) immersion solutions: coffee or distilled water (n= 10). Immersion was under 5 mL of each solution for 3 hours daily, for 30 days. Measurement of Ra and ∆E was made considering two times: initial (after polishing) and final (after immersion), in addition to surface analysis by scanning electron microscopy at the end. Kruskal-Wallis, Mann-Whitney, and Dunn (α= 0.05) was used.
For the unpolished samples after immersion in coffee, TNC (P= 0.007) showed lower ΔE than FXT and FO. For polished samples with CSA and immersed in coffee, TNC followed by FXT showed lower ΔE than in the absence of polishing. Polishing with AOD and immersed in coffee: FO had smaller ΔE than when not polished. For Ra, TNC and FO had lower values after using AOD, whereas for FXT lower Ra was noted with CSA.
The roughness and color stability of resin composites are mediated by the polished material, polishing system and dye solution. The best results were found for Tetric N-Ceram polished with aluminum oxide discs.
评估抛光系统（圆盘或橡胶）对两种大块充填树脂复合材料和一种传统树脂复合材料在浸入染料溶液后表面粗糙度（Ra）和颜色变化（ΔE）的影响。
将180个样本（10毫米×2毫米）分为三组：（1）树脂复合材料：Filtek One Bulk Fill（FO）、Tetric N-Ceram Bulk Fill（TNC）、Filtek Z350 XT（FXT）（n = 60）；（2）抛光系统：未抛光（对照）；氧化铝圆盘（Sof-Lex，AOD）；杯形磨料橡胶抛光器（Astropol，CSA）（n = 20），以及（3）浸入溶液：咖啡或蒸馏水（n = 10）。每种溶液5毫升下每天浸泡3小时，共30天。除最后通过扫描电子显微镜进行表面分析外，还在两个时间点测量Ra和∆E：初始（抛光后）和最终（浸泡后）。使用Kruskal-Wallis、Mann-Whitney和Dunn检验（α = 0.05）。
对于浸入咖啡后的未抛光样本，TNC（P = 0.007）的ΔE低于FXT和FO。对于用CSA抛光并浸入咖啡的样本，TNC其次是FXT的ΔE低于未抛光时。用AOD抛光并浸入咖啡：FO的ΔE比未抛光时小。对于Ra，使用AOD后TNC和FO的值较低，而对于FXT，使用CSA时Ra较低。
树脂复合材料的粗糙度和颜色稳定性受抛光材料、抛光系统和染料溶液的影响。用氧化铝圆盘抛光的Tetric N-Ceram效果最佳。
