Yenier Yurdagüven Gülşah
Department of Restorative Dentistry, Faculty of Dentistry, Istanbul Okan University, İstanbul 34959, Türkiye.
Biomimetics (Basel). 2025 Aug 21;10(8):550. doi: 10.3390/biomimetics10080550.
Biomimetic restorative dentistry aims to preserve tooth structure and achieve optimal aesthetic harmony with surrounding dentition. The principles and protocols associated with biomimetic restorative dentistry are designed to enhance the longevity of the restoration. The use of flowable CRs is increasingly common; however, the effect of viscosity on the discoloration has not been clearly established. This in vitro study aimed to assess the color stability of flowable CRs with varying viscosities following immersion in common staining solutions and subsequent repolishing. A total of 250 disc-shaped specimens (8 mm × 2 mm) were prepared from five CRs with different viscosity profiles: high-viscosity (Spectra STHV, Dentsply, Milford, DE, USA), medium-viscosity (Estelite Universal Flow Medium, Tokuyama Dental Co., Tokyo, Japan), bulk-fill (Estelite Bulk-Fill Flow, Tokuyama Dental Co., Tokyo, Japan; SDR Plus, Dentsply, Milford, DE, USA), and packable (Estelite Posterior, Tokuyama Dental Co., Tokyo, Japan). After polymerization and baseline color measurements, specimens were immersed in coffee, tea, cola, red wine, or distilled water for 144 h. Color values were recorded before and after staining, and again following repolishing. Color changes (ΔE, ΔE, ΔE) were calculated using the CIE Lab system and statistically analyzed via two-way ANOVA and Tukey HSD (α = 0.05). Both the CR type and the staining solution substantially affected the color change. SDR Plus exhibited the highest ΔE values. Red wine caused the most discoloration. Repolishing enhanced color in selected groups.
仿生修复牙科旨在保留牙齿结构，并与周围牙列实现最佳美学和谐。与仿生修复牙科相关的原则和方案旨在提高修复体的使用寿命。可流动复合树脂（CRs）的使用越来越普遍；然而，粘度对变色的影响尚未明确确定。这项体外研究旨在评估不同粘度的可流动CRs在浸入常见染色溶液并随后重新抛光后的颜色稳定性。从五种具有不同粘度特性的CRs制备了总共250个圆盘形标本（8毫米×2毫米）：高粘度（Spectra STHV，美国登士柏公司，米尔福德，特拉华州，美国）、中粘度（Estelite Universal Flow Medium，日本德山齿科公司，东京，日本）、大体积充填（Estelite Bulk-Fill Flow，日本德山齿科公司，东京，日本；SDR Plus，美国登士柏公司，米尔福德，特拉华州，美国）和可压实（Estelite Posterior，日本德山齿科公司，东京，日本）。在聚合和基线颜色测量后，将标本浸入咖啡、茶、可乐、红酒或蒸馏水中144小时。在染色前后以及重新抛光后再次记录颜色值。使用CIE Lab系统计算颜色变化（ΔE、ΔE、ΔE），并通过双向方差分析和Tukey HSD（α = 0.05）进行统计分析。CR类型和染色溶液均对颜色变化有显著影响。SDR Plus表现出最高的ΔE值。红酒导致的变色最多。重新抛光在选定组中改善了颜色。
