在现代浮式散装复合材料的设置和老化过程中,光传输的动力学
Nicoleta Ilie1, Christof Högg1
1Department of Conservative Dentistry and Periodontology, University Hospital, Ludwig Maximilians University, Goethestr. 70, D-80336 Munich, Germany.
Materials (Basel, Switzerland)
|September 14, 2024
概括
新的批量填充牙复合材料显示了不同的光传输,影响了聚合评估. 它们的机械性能取决于填充剂含量,但老化效应是复杂的.
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
- 生物材料工程 生物材料工程
背景情况:
- 牙科材料的进步侧重于提高性能和临床实用性.
- 最近的流动性散装填充复合材料是为单层应用而设计的,消除了对顶层的需求.
- 这一创新需要对其在临床条件下的性能进行彻底评估.
研究的目的:
- 为了比较聚合过程中新的可流体散装复合材料的光传导动力学.
- 在模拟的临床使用下评估它们的弹性塑料行为和抗衰老能力.
- 为了确定光传输的可靠性,作为评估聚合质量的指标.
主要方法:
- 使用实验室级光谱仪测量在单体转化为聚合物的过程中光传导动力学.
- 在模拟的临床条件下评估了弹性塑料特性和衰老行为.
- 与功能组转换和机械性质变化相关联的光传输数据.
主要成果:
- 在测试的复合材料中观察到光传导动力学的显著变化.
- 这些差异归因于填充剂和聚合物矩阵和/或启动器类型之间的折射率不匹配.
- 光传导动力学与功能组转换没有一致的相关性,质疑其用于聚合评估的用途.
- 最初的机械性能与填充剂体积相关,但老化导致多因素降解.
结论:
- 该研究强调了新批量填充复合材料之间光传输的关键差异.
- 仅仅光传输不足以准确评估聚合质量或确定最佳固化时间.
- 了解填充剂含量和多因素衰老效应对于预测这些材料的临床寿命至关重要.
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