不同的固化方法对复合树脂颜色稳定性的影响
Massimo Pisano1, Alfredo Iandolo1, Dina Abdellatif1
1Department of Medicine, Surgery and Dentistry 'Scuola Medica Salernitana', University of Salerno, Baronissi, Italy.
Restorative dentistry & endodontics
|December 9, 2024
概括
完成和抛光复合树脂显著改善了对咖啡染色的颜色稳定性. 在这项研究中,额外的聚合策略没有提高颜色稳定性.
科学领域:
- 牙科材料科学 牙科材料科学
- 聚合物化学 聚合物化学
- 颜色科学 颜色科学
背景情况:
- 复合树脂的色彩稳定性对于美观的牙科修复至关重要.
- 聚合策略和表面处理可以影响恢复色彩的寿命.
- 众所周知,咖啡是一种常见的饮料,可导致牙材料的外部染色.
研究的目的:
- 为了比较不同聚合策略对复合树脂颜色稳定性的影响.
- 评估完成和抛光程序对复合树脂颜色稳定性的有效性.
- 评估复合树脂在接触咖啡溶液时的颜色变化.
主要方法:
- 用不同的聚合策略准备了四组复合树脂样本.
- 样品根据复合材料类型 (Kuraray Clearfil Majesty ES-2 Classic,Premium,Universal) 和表面处理分为子组.
- 使用光谱测量 (CIE L*a*b*参数) 在浸泡在咖啡溶液中7天前和后评估颜色稳定性.
主要成果:
- 在表面处理和没有表面处理的组之间观察到颜色变化 (ΔE值) 的统计学上显著差异.
- 在不同的复合类型和程序组中,也发现了 ΔE 值的显著差异.
- 额外的光聚合和氧抑制并没有改善颜色稳定性.
结论:
- 完成和抛光程序显著提高复合树脂的颜色稳定性.
- 评估的额外聚合策略没有提供优越的色彩稳定性.
- 表面处理在暴露于咖啡等染色剂时,在保持复合树脂的颜色完整性方面发挥着至关重要的作用.
相关概念视频
01:26Curing Methods
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Concrete members with a small surface-to-volume ratio are cured by oiling and moistening the forms before casting the concrete member. These forms can be left in place for a prolonged period to prevent moisture loss, and can be wetted if made of a material suitable for wetting. If the forms are removed early, the concrete member is moistened and covered with polythene sheets to maintain moisture. For large horizontal concrete surfaces exposed to dry weather, a temporary covering is suspended...
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01:20Curing of Concrete
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01:25Accelerated Curing of Concrete
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01:14Testing Water Quality
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01:21Drying Shrinkage
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01:19Retarders
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