自粘性树脂复合材料在储水过程中的聚合应激变化
Kazuyoshi Okawa1, Daichi Aizawa1, Hiro Matsumoto1
1Department of Operative Dentistry, Tsurumi University School of Dental Medicine, Yokohama, Japan.
Bio-medical materials and engineering
|October 17, 2025
概括
水吸附显著降低了自粘树脂复合材料 (SARC) 中的聚合应激,可能提高牙科修复的寿命. 这种减压与降低模量和增加水吸收有关.
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:
- 树脂复合材料在口腔环境中发生尺寸变化,导致牙受到压力.
- 自粘树脂复合材料 (SARC) 与传统复合材料的区别在于它们的水友性单体,这可能会影响产生应力.
研究的目的:
- 研究水吸附如何影响SARC中的聚合应力.
- 为了比较SARCs与传统树脂复合材料之间的应力行为.
主要方法:
- 模拟口内应力分析,使用带有裂的玻璃盘模型.
- 在复合填充后,在37°C下一周内测量裂纹长度的变化.
- 基于裂传播和玻璃断裂性计算界面应力.
主要成果:
- SARCs的聚合应力与传统复合材料相当或低于传统复合材料.
- 在所有测试的复合材料中,在储存水的前24小时内观察到显著的应力减轻.
- 较大的应力减轻与更明显的屈曲模量下降和更高的水吸收相关.
结论:
- 由于水吸附而观察到的SARCs的应激减轻可能会提高牙科修复的耐用性.
- 更快,更实质性的减压是SARCs长期临床性能的有益因素.
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