Abstract：
Purpose: The purpose of this study was to assess, in vitro, the color stability and bleaching response of three bulk-fill composite resins-Activa™, Tetric®-N-Ceram Bulk-Fill, and Filtek™ One Bulk-Fill???and one conventional composite resin, Filtek™ Z250, after immersion in commonly consumed carbonated beverages and subsequent home bleaching with 15 percent carbamide peroxide. Methods: Ninety-six samples (two- and four-mm thick) of the materials were immersed in malt drink, energy drink, cola, or distilled water for one day, one week, and two months. After two months, samples underwent home bleaching with 15 percent carbamide peroxide gel. Spectrophotometric analysis measured color and whiteness changes pre-immersion, post-immersion, and post-bleaching. Statistical significance was determined using factorial mixed analysis of variance (ANOVA), three-way ANOVA, and Bonferroni post hoc tests (P<0.05). Results: All tested composite resins exhibited unacceptable discoloration (color change greater than 3.3) after two months in carbonated beverages. Filtek™ One Bulk-Fill and Filtek™ Z250 displayed the most significant discoloration, particularly when immersed in the malt drink (P<0.05). In contrast, Activa™ samples reached unacceptable discoloration within just one week in malt and cola drinks. Home bleaching yielded limited whiteness recovery, with Activa™ presenting acceptable whiteness post-bleaching after staining with cola and energy drinks. Conclusions: This study highlights the aesthetic risks of prolonged carbonated beverage consumption and the limitations of the assessed home bleaching technique using 15 percent carbamide peroxide. Enhanced dental education on the dietary effects of some beverages on restorative materials is indicated by these findings.
摘要：
目的：本研究的目的是评估，在体外，三种批量填充复合树脂的颜色稳定性和漂白响应-Activa™，Tetric®-N-Ceram散装填料,和Filtek™一种散装填充和一种常规复合树脂，Filtek™Z250，浸泡在通常消耗的碳酸饮料中，随后用15%过氧化脲进行家庭漂白。方法：将96个样品（2毫米和4毫米厚）的材料浸入麦芽饮料中，能量饮料,可乐,或一天的蒸馏水，一个星期,还有两个月.两个月后,样品用15%过氧化脲凝胶进行家庭漂白。分光光度分析测得的颜色和白度变化，浸泡后，和漂白后。使用因子混合方差分析(ANOVA)确定统计显著性，三因素方差分析,和Bonferroni事后检验(P<0.05)。结果:所有测试的复合树脂在碳酸饮料中两个月后表现出不可接受的变色(颜色变化大于3.3)。Filtek™OneBulk-Fill和Filtek™Z250显示出最显著的变色，特别是浸入麦芽饮料时（P<0.05）。相比之下,Activa™样品在麦芽和可乐饮料中仅一周内达到不可接受的变色。家庭漂白产生有限的白度恢复，用可乐和能量饮料染色后，Activa™在漂白后呈现可接受的白度。结论：这项研究强调了长时间消耗碳酸饮料的美学风险以及使用15％过氧化脲的评估家庭漂白技术的局限性。这些发现表明，增强了牙科教育对某些饮料对修复材料的饮食影响。
