Silva Marianna-Falcão, Dias Marlon-Ferreira, Lins-Filho Paulo-Cardoso, Silva Claudio-Heliomar-Vicente, Guimarães Renata-Pedrosa
Graduated in Dentistry from Federal University of Pernambuco.
Master student of the Dentistry postgraduate program of Universidade Estadual Paulista.
J Clin Exp Dent. 2020 Nov 1;12(11):e1086-e1090. doi: 10.4317/jced.57579. eCollection 2020 Nov.
The color stability of the composite resin is an important property that influences its clinical longevity, which remains an inherent challenge to the material. Thus, the purpose of this study was to evaluate the color stability of bulk-fill resins when exposed to dye.
Cavities were prepared in 80 bovine incisors, which were randomly assigned into 4 groups (n = 20) according with the resin composite used: P60 (Control Group - Filtek P60, 3M/ESPE), FP (Filtek Bulk-Fill Posterior, 3M/ESPE), SDR (SDR, Dentsply) and FF (Filtek Bulk Fill Flow, 3M/ESPE). All restorations were performed according to the protocol of each manufacturer, the control group was restored using the incremental technique, and the other groups using single-increment technique. The color of each restoration was measured using a portable digital spectrophotometer (Easyshade-Vita) according to the CIELab system, and then the teeth were submerged in red wine for 07 days, kept in a biological oven at 37ºC. New color registration was performed to measure the ΔE index of color variation.
The P60 group had the lowest average ΔE (16.96), while the FF group had the highest average (28.09) and ranged from 21.19 to 26.28 in the FP and SDR groups.
Analysis of the color variation showed that the control group had better color stability than the Bulk-Fill resins evaluated. Dental restoration failure, Food coloring agents, polymerization.
复合树脂的颜色稳定性是影响其临床使用寿命的一项重要性能，这仍然是该材料面临的一个固有挑战。因此，本研究的目的是评估大块充填树脂在接触染料时的颜色稳定性。
在80颗牛切牙上制备窝洞，根据所使用的树脂复合材料将其随机分为4组（n = 20）：P60（对照组 - 3M/ESPE公司的Filtek P60）、FP（3M/ESPE公司的Filtek Bulk-Fill Posterior）、SDR（登士柏公司的SDR）和FF（3M/ESPE公司的Filtek Bulk Fill Flow）。所有修复均按照各制造商的方案进行，对照组采用分层技术修复，其他组采用一次性充填技术。使用便携式数字分光光度计（Easyshade-Vita）根据CIELab系统测量每个修复体的颜色，然后将牙齿浸泡在红酒中7天，置于37℃的生物烘箱中。进行新的颜色记录以测量颜色变化的ΔE指数。
P60组的平均ΔE最低（16.96），而FF组最高（28.09），FP组和SDR组的平均ΔE在21.19至26.28之间。
颜色变化分析表明，对照组的颜色稳定性优于所评估的大块充填树脂。牙齿修复失败、食用色素、聚合反应。
