Maleki Dina, Maleki Donya, Maleki Arayeh, Zare Helia, SohrabiFar AmirHossein
Dental Sciences Research Center, School of Dentistry, Guilan University of Medical Sciences, Rasht, Iran.
Dental Research Center, School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
Int J Dent. 2025 Aug 21;2025:6965595. doi: 10.1155/ijod/6965595. eCollection 2025.
Ceramic restorations have become a cornerstone of modern dentistry. Color stability is crucial for dental ceramics to maintain the esthetic appearance of restorations over time. Given the widespread consumption of staining agents like coffee, tea, and cola, this study aimed to assess the color stability of three ceramics after thermocycling in different solutions. In this in vitro study, 120 samples of Vita Suprinity PC, IPS e.max, and InCoris ZI (40 samples each) were prepared as disks with 1 mm thickness and 10 mm diameter in A2 shade and glazed per manufacturer guidelines. The 10 samples of each group underwent 5000 thermocycles in coffee, black tea, cola, or tap water (5 and 55°C) with a dwell time of 30 s and a transfer time of 10 s simulating approximately 6 months of clinical use. To assess color change, was calculated using a calibrated spectrophotometer (X Rite, sp60 series, USA). (for the lightness/darkness), (for redness/greenness), and (for yellowness/blueness) were measured before and after immersing. The data were analyzed using ANOVA with SPSS version 26.0. at the significance level of 0.05. According to the results in all three groups, was significantly higher in the coffee subgroup compared to the black tea, cola, and water subgroups; was significantly higher in the black tea subgroup compared to the cola and water subgroups; and was significantly higher in the cola subgroup than the water subgroup ( < 0.001). In the comparison of all four solutions, the color change in the Vita Suprinity PC samples was more significant compared to IPS e.max and InCoris ZI samples; and was more significant in IPS e.max than InCoris ZI ( < 0.001). ∆ values for Vita Suprinity PC and IPS e.max were perceptible ( > 1) but clinically acceptable ( < 3.7), while InCoris ZI's was imperceptible ( < 1). The color stability of monolithic zirconia was more than lithium disilicate in coffee, black tea, cola, and water solutions. The color of lithium disilicate was more stable than zirconia-reinforced lithium silicate in all staining solutions. Coffee, black tea, and cola consumption can affect ceramic restorations' color change. Coffee has a more staining effect among different beverages.
陶瓷修复体已成为现代牙科的基石。颜色稳定性对于牙科陶瓷随着时间推移保持修复体的美观外观至关重要。鉴于咖啡、茶和可乐等染色剂的广泛消费，本研究旨在评估三种陶瓷在不同溶液中热循环后的颜色稳定性。在这项体外研究中，制备了120个Vita Suprinity PC、IPS e.max和InCoris ZI样本（每组40个），制成厚度为1毫米、直径为10毫米的A2色圆盘，并按照制造商指南进行上釉。每组的10个样本在咖啡、红茶、可乐或自来水中（5°C和55°C）进行5000次热循环，保压时间为30秒，转移时间为10秒，模拟大约6个月的临床使用。为了评估颜色变化，使用校准分光光度计（美国爱色丽sp60系列）计算ΔE。在浸泡前后测量L*（用于亮度/暗度）、a*（用于红色度/绿色度）和b*（用于黄色度/蓝色度）。使用SPSS 26.0版本的方差分析对数据进行分析，显著性水平为0.05。根据所有三组的结果，与红茶、可乐和水亚组相比，咖啡亚组的ΔE显著更高；与可乐和水亚组相比，红茶亚组的ΔE显著更高；与水亚组相比，可乐亚组的ΔE显著更高（P < 0.001）。在所有四种溶液的比较中，Vita Suprinity PC样本的颜色变化比IPS e.max和InCoris ZI样本更显著；IPS e.max中的颜色变化比InCoris ZI更显著（P < 0.001）。Vita Suprinity PC和IPS e.max的ΔE值是可察觉的（ΔE > 1）但临床上可接受（ΔE < 3.7），而InCoris ZI的ΔE是不可察觉的（ΔE < 1）。在咖啡、红茶、可乐和水溶液中，整体氧化锆的颜色稳定性高于二硅酸锂。在所有染色溶液中，二硅酸锂的颜色比氧化锆增强型硅酸锂更稳定。饮用咖啡、红茶和可乐会影响陶瓷修复体的颜色变化。在不同饮料中，咖啡的染色效果更强。
