Background: Composite resin is a tooth-colored filling material containing Bis-GMA which exhibits water sorption properties. People tend to consume soft drink with various colors. Water sorption properties can alter the color stability of composite resin purpose. Purpose: This study was to determine the influence of immersion durations of composite resin in soft drink on color stability. Methods: The visible-light cured hybrid composite resin and soft drink were used. Ten disk specimens (2.5 mm thickness and 15 mm diameter) of composite resin were prepared and light cured for 20 seconds, then stored in distilled water for 24 hours at 37° C. The initial color of specimens were measured by Chromameter. After that, each specimen was immersed in 30 ml of soft drink up to 48, 72, and 96 hours at 37° C. The specimens’ color were measured again after each immersion. The color changes were calculated by CIE L*a*b* system formula. The data was analyzed by One-Way ANOVA and LSD (α = 0.05). Result: The ANOVA showed that the immersion durations of composite resin in soft drinks had significant influence on the color stability (p < 0.05). The LSD0.05 tests showed significant differences among all groups. The least color change was detected from the group of 48 hours immersion, while the greatest color change was from the group of 96 hours immersion. Conclusions: The immersion of composite resin in soft drinks influenced the color stability (began after 48 hours immersion).
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机译：背景：复合树脂是含有BIS-GMA的牙齿色的填充材料，其具有水吸附性能。人们倾向于用各种颜色消耗软饮料。水吸附性能可以改变复合树脂目的的颜色稳定性。目的：该研究是确定复合树脂在软饮料中浸渍持续性对颜色稳定性的影响。方法：使用可见光固化的杂化复合树脂和软饮料。制备十个盘样品（2.5mm厚度和15mm直径）复合树脂，并将光固化20秒，然后在37℃下储存在蒸馏水中24小时。通过色度计测量样品的初始颜色。之后，将每个样品浸入30ml软饮料中，在37℃下在37℃下浸入48,72和96小时。在每个浸渍后再次测量样品的颜色。 CIE L * A * B *系统公式计算颜色变化。通过单向ANOVA和LSD（α= 0.05）分析数据。结果：ANOVA表明软饮料中复合树脂的浸渍持续时间对颜色稳定性有显着影响（P <0.05）。 LSD0.05测试在所有群体中表现出显着的差异。从48小时浸泡中检测到最小的颜色变化，而最大的颜色变化是从96小时浸没的组。结论：软饮料中复合树脂的浸渍影响了颜色稳定性（浸泡48小时后开始）。
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