牙凝固水泥的机械行为:静态,动态和有限元素研究
Tamás Tarjányi1, Csongor Mészáros2, Rebeka Anna Kiss1
1Department of Medical Physics and Informatics, Faculty of Science and Informatics, Albert Szent-Györgyi Medical School, University of Szeged, Korányi Fasor 9, H-6720 Szeged, Hungary.
Dentistry journal
|December 24, 2025
概括
基于树脂和树脂修饰的玻璃离子体水泥与传统牙科水泥相比,具有更高的机械强度和耐疲劳性. 这使得它们非常适合用于高负荷的假牙应用,确保长期的临床成功.
科学领域:
- 牙科材料科学 牙科材料科学
- 生物材料工程 生物材料工程
- 牙修复 牙修复 牙修复 牙修复 牙修复
背景情况:
- 牙科修复的长期临床成功在很大程度上取决于水泥的机械完整性.
- 了解不同类型水泥的机械性能对于选择合适的材料至关重要.
研究的目的:
- 系统地比较六种常见的最终牙科水泥的机械性能,特别是压力强度和耐疲劳性.
- 评估各种化水泥适用于高负荷假牙应用的适用性.
主要方法:
- 六种牙科水泥进行了测试:粘合剂酸盐 (AphC),哈佛酸盐 (HphC),聚碳酸盐水泥 (CaC),玻璃离子体水泥 (GIC),树脂修饰玻璃离子体水泥 (RMGIC) 和树脂水泥 (ReC).
- 静态和动态压缩负荷测试使用Instron ElectroPuls E3000进行.
- 用有限元分析 (FEA) 来分析应力分布.
主要成果:
- 传统的水泥 (GIC,CaC,酸盐) 的压力强度和耐疲劳性明显低于RMGIC和ReC.
- 树脂水泥 (ReC) 和树脂改性玻璃离子体水泥 (RMGIC) 显示出卓越的机械可靠性,并在循环负荷下保持完整性.
- 联邦能源局证实,ReC和RMGIC的应力分布更加均,峰值应力较低.
结论:
- 基于树脂和树脂修饰的玻璃离子体水泥比传统水泥具有更高的压力强度和耐疲劳性.
- 这些先进的水泥为最终的修复提供了优越的长期机械稳定性.
- 研究结果支持在高负载牙套应用中使用树脂基水泥,以确保可靠的固定.
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