工程界面完整性与耐水解,自我增强的牙粘合剂.
Erhan Demirel1, Burak Korkmaz1,2, Youngwoo Chang3
1Institute for Bioengineering Research, University of Kansas, 1530 W. 15th Street, Lawrence, KS 66045-7608, USA.
International journal of molecular sciences
|July 13, 2024
概括
使用短链西兰单体的新型牙粘合剂显示改善了机械强度和降低了降解. 这项创新旨在通过预防二次虫病来提高复合材料修复的寿命.
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:
- 二次性是复合修复失败的主要原因.
- 牙粘合剂对损伤的易感性导致恢复失败.
- 现有的西兰单体,如 γ-甲基 propyltrimethoxysilane (MPS) 具有局限性.
研究的目的:
- 为了研究甲基酸盐基树脂与甲基基甲基甲基三氧化 (MMeS),一个短链西兰替代品.
- 评估基于MMeS和MPS的牙粘合剂的性能.
- 评估这些粘合剂在粘合剂/牙接口上的性能.
主要方法:
- 用MMeS和MPS合成和表征基于甲基烯酸的树脂.
- 确定转换度 (DC),聚合动力学,水吸收和机械性能.
- 通过化学测量辅助的微拉曼光谱分析了粘合剂/牙接口.
主要成果:
- 在30%重量的BisGMA配方中,MMeS树脂显示出比MPS树脂更快的聚合,更低的DC和减少的液.
- MMeS树脂表现出增强的机械性能,包括增加的存储和损失模块,玻璃过渡温度 (Tg) 和交联密度.
- 光谱分析显示,不同配方的树脂-丁接口完整性相似.
结论:
- 实验性的短链西兰单体MMeS在牙粘合剂中提供了水解稳定性和改进的机械性能.
- 这种自主增强机制提高了材料的耐用性.
- 基于MMeS的粘合剂是开发持久修复性牙科材料的有希望的策略.
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