Department of Restorative Dentistry, Faculty of Dentistry, Mersin University, Çiftlikköy Campus, 33343, Yenişehir, Mersin, Türkiye.
Department of Restorative Dentistry, Faculty of Dentistry, European University of Lefke, TRNC, Mersin 10, Türkiye.
BMC Oral Health. 2022 Sep 10;22(1):392. doi: 10.1186/s12903-022-02414-9.
The structure of bulk-fill resin composites differs from that of their conventional counterparts, but how this difference affects the color stability of the former after staining and bleaching is unclear. Accordingly, this study was aimed at investigating color change in nine bulk-fill resin composites and one nanohybrid resin composite treated with hydrogen peroxide and carbamide peroxide after staining with tea, coffee, and red wine.
Eighty specimens were prepared from each resins [Clearfil Majesty Posterior (CMP), SDR flow (SDR), FiltekBulk-Fill Flowable Restorative (FBF), Reveal HD Bulk (RHD), Beautifil-Bulk Restorative (BBR), Tetric EvoCeram® Bulk Fill (TEC), SonicFill™2 (SF2), everX Posterior™ (eXP), X-tra base (XB), and Venus® Bulk Fill (VBF)]. Following baseline color measurements, the specimens were randomly divided into 4 groups according to immersion solutions and distilled water as the control. At the end of a 30-day test period, color measurements were repeated, and color change values (∆E) were calculated. Each resin group was then divided into 2 subgroups (with 10 specimens per group) on the basis of bleaching agent (Opalescence Boost 40%, Opalescence PF 16%). Following bleaching application, ∆E and changes of whiteness (∆WI1 = WIbleaching-WIbaseline, ΔWI2 = WIbleaching-WIstaining) values were recorded. Two- and three-way analyses of variance and Tukey's post hoc test were performed, with a P < 0.05 regarded as indicative of significance.
After immersion in distilled water, tea, and red wine, the highest ΔE values were observed in eXP (P < 0.05). Resin materials immersed in coffee and tea exhibited statistically higher ∆E values than those immersed in red wine except for eXP, TEC, and FBF (P < 0.05). For eXP, the highest ∆E values were recorded in distilled water. For TEC and FBF, there was no statistically significant difference among the immersion solutions and distilled water (P > 0.05). For all the resins and staining beverages, no statistically significant difference in ∆WI1 and ∆WI2 values were detected between bleaching agents (P > 0.05). All the ΔWI1 values were above the whiteness perceptibility threshold.
The bulk-fill materials were more resistant to discoloration and bleaching procedures than the conventional resin composites. Coffee and tea caused more staining than distilled water and red wine generally. The type of bleaching procedure had no effect on the whiteness of the tested materials.
块状填充树脂复合材料的结构与传统复合材料不同，但前者在染色和漂白后颜色稳定性如何变化尚不清楚。因此，本研究旨在研究九种块状填充树脂复合材料和一种纳米复合树脂复合材料在经过茶、咖啡和红酒染色后，用双氧水和过氧脲处理后的颜色变化。
从每种树脂[Clearfil Majesty Posterior（CMP）、SDR flow（SDR）、Filtek Bulk-Fill Flowable Restorative（FBF）、Reveal HD Bulk（RHD）、Beautifil-Bulk Restorative（BBR）、Tetric EvoCeram® Bulk Fill（TEC）、SonicFill™2（SF2）、everX Posterior™（eXP）、X-tra base（XB）和 Venus® Bulk Fill（VBF）]中制备 80 个样本。在基线颜色测量后，根据浸液和蒸馏水作为对照，将样本随机分为 4 组。在 30 天测试期结束时，重复颜色测量并计算颜色变化值（∆E）。然后，根据漂白剂（Opalescence Boost 40%，Opalescence PF 16%）将每个树脂组分为 2 个亚组（每组 10 个样本）。漂白剂应用后，记录∆E 和白度变化值（∆WI1=WIbleaching-WIbaseline，ΔWI2=WIbleaching-WIstaining）。进行了双因素和三因素方差分析以及 Tukey 事后检验，P<0.05 表示有统计学意义。
在蒸馏水、茶和红酒中浸泡后，eXP 观察到最高的∆E 值（P<0.05）。除了 eXP、TEC 和 FBF 外，浸泡在咖啡和茶中的树脂材料的∆E 值高于浸泡在红酒中的树脂材料（P<0.05）。对于 eXP，在蒸馏水中记录到最高的∆E 值。对于 TEC 和 FBF，浸液与蒸馏水之间无统计学差异（P>0.05）。对于所有的树脂和染色饮料，漂白剂之间的∆WI1 和∆WI2 值没有统计学差异（P>0.05）。所有的∆WI1 值均高于白度可感知阈值。
块状填充材料比传统树脂复合材料更能抵抗变色和漂白程序。咖啡和茶一般比蒸馏水和红酒更容易染色。漂白程序的类型对测试材料的白度没有影响。
