比较ISO 4049和里埃变换红外光谱法,用于评估牙科树脂复合材料中的环境光敏感性
Matej Par1, Lucija Gotovac2, Stella Horvat2
1Department of Endodontics and Restorative Dentistry, University of Zagreb School of Dental Medicine, Gunduliceva 5, 10000, Zagreb, Croatia. mpar@sfzg.unizg.hr.
里埃变换红外光谱 (FTIR) 显示了评估牙树脂复合材料光敏性的潜力. 然而,FTIR通常高估了工作时间,并且比ISO 4049标准对早期聚合物检测的敏感度要低.
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
- 频谱学是一种光谱学.
背景情况:
- 牙科树脂复合材料容易受到环境光的过早聚合,影响临床性能.
- 标准化方法对于评估材料工作时间和光敏度至关重要.
- 里埃变换红外光谱 (FTIR) 为评估聚合动力学提供了一个潜在的替代方案.
研究的目的:
- 为了评估牙树脂复合材料对环境光的敏感性.
- 用ISO 4049标准和FTIR光谱法测量的工作时间进行比较.
- 评估FTIR作为确定过早聚合物的替代方法的潜力.
主要方法:
- 八个牙科复合材料 (3个散装,5个常规) 被暴露在模拟的环境光下.
- 通过ISO 4049 (宏观变化) 和FTIR光谱 (转换度) 评估的工作时间.
- 统计分析包括ANOVA和皮尔森相关性.
主要成果:
- 所有复合材料都符合ISO 4049的最低工作时间60秒.
- 在ISO 4049和FTIR工作时间之间观察到显著差异;FTIR通常被高估.
- FTIR与ISO 4049显示了中度的相关性,但对早期聚合的敏感性较小.
结论:
- FTIR光谱具有评估牙科复合材料中环境光敏感性的潜力.
- 在检测早期聚合时,FTIR缺乏ISO 4049的灵敏度.
- 标准化,敏感的方法对于评估树脂复合材料的工作时间与不断变化的材料至关重要.
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