牙树脂复合材料的吸水:一个新的方法是未来吗?
Lea Heckel1, Renan Belli1, Tabea Schüssler1
1Department of Operative Dentistry and Periodontology, Research Laboratory for Dental Biomaterials, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany.
European journal of oral sciences
|March 17, 2026
概括
卡尔·菲舍尔定位 (KFT) 和热重力测量 (TG) 能够精确地测量牙树脂复合材料中的水含量,其性能优于传统方法. KFT准确量化了水扩散动力学,这对于材料的寿命至关重要.
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
- 分析化学 分析化学
背景情况:
- 口内吸水会导致牙树脂复合材料 (RCs) 的尺寸变化和机械故障.
- 在RC中精确测量低水量是目前基于称重的方法很困难的.
- 标准化测试 (ISO 4049) 可能无法完全捕捉水扩散动力学.
研究的目的:
- 评估卡尔·菲舍尔定位 (KFT) 和热重量计 (TG) 作为精确的替代方法来测量牙科材料中的水含量.
- 将KFT和TG方法与ISO 4049标准和扩展度进行比较.
- 评估各种牙科复合材料中的水吸附动力学和初始水含量.
主要方法:
- 四个间接的RC,一个聚合物透陶网 (PICN) 和一个直接的复合材料被浸泡在水中270天.
- 使用KFT和TG测量水含量,并检测蒸发水.
- 扩展计 (DIL) 和TG-FTIR用于方法验证和与ISO 4049进行比较.
主要成果:
- 最初的水含量在0.19-1.65重量%之间,在270天的水吸附后增加到0.73-3.12重量%.
- KFT与ISO 4049的相关性很好,显示出比TG更高的灵敏度.
- 直接的RC表现良好;间接的RC和PICN显示了不同的吸水率,DIL证实了吸水率.
结论:
- KFT提供了一种灵敏而准确的方法来量化牙科材料的初始水含量和扩散动力学.
- KFT和TG是传统称重方法的可行的替代方法,用于评估牙科复合材料中的水吸附率.
- 了解水扩散对于预测牙科修复材料的长期性能和耐用性至关重要.
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