Color stability of visible light-cured, hard direct denture reliners: an in vitro investigation.
Color stability of visible light-cured, hard direct denture reliners: an in vitro investigation.
复制标题
可见光固化硬质直接义齿衬托的颜色稳定性：体外研究。
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
A. Zissis
中科院分区：
文献类型：
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作者：
G. Polyzois;S. Yannikakis;A. Zissis
目的
以往的研究表明，自聚硬质直接义齿再粘接剂(HDDR)的颜色稳定性不理想。本研究考察了新引进的可见光固化和双固化HDDR的颜色稳定性。
材料和方法
在咖啡、茶和水中浸泡1小时、1天、7天和30天后，对5个HDDR进行评估。用三刺激色度计测量颜色，并计算色差(增量E*)。
结果
浸泡30天后，一种可见光固化材料表现出最高的E*值(17.8)。其他材料在水和咖啡中表现出可接受的颜色稳定性。然而，茶对它们的颜色有很大影响。
结论
脱色剂、染液和浸泡时间是影响颜色稳定性的重要因素。浸泡7天后，所有材料都表现出明显的颜色差异。茶比咖啡具有更高的着色力。
PURPOSE
Previous studies have disclosed the unsatisfactory color stability of autopolymerizing, hard direct denture reliners (HDDR). The present study investigated the color stability of the newly introduced visible light-cured and dual-cured HDDRs.
MATERIALS AND METHODS
Five HDDRs were evaluated after 1 hour, 1 day, 7 days, and 30 days of immersion in coffee, tea, and water. Color measurements were obtained with a tristimulus colorimeter, and color differences (delta E*) were calculated.
RESULTS
After 30 days of immersion one visible light-cured material exhibited the highest delta E* value (17.8). The other materials showed acceptable color stability in water and coffee. However, tea strongly affected their color.
CONCLUSION
Reliners, staining solutions, and immersion time are significant factors that affect color stability. After 7 days of immersion, all of the materials showed perceptible color differences. Tea exhibited higher staining capacity than coffee.