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为提高玻璃离子水泥性能优化3酸改性聚烯酸

Xiaoxu Liang¹, Dandan Zhou², Biao Yu³

¹School of Arts and Sciences, Guangzhou Maritime University, Guangzhou, 510725, China.

Journal of the mechanical behavior of biomedical materials

|August 31, 2025

概括

改性聚基烯酸 (PCA) 与3基烯酸 (VA) 间隔剂增强玻璃离子水泥 (GIC) 的机械强度和灵活性. 这种改进的GIC配方保持了抗水性和治疗性化物释放的牙修复.

科学领域:

材料科学
聚合物化学
生物材料

背景情况:

玻璃离子体水泥 (GIC) 具有固有的机械限制,原因是硬的多基酸 (PCA) 结构阻碍了离子交联.
这些局限性影响了GIC在牙科修复应用中的临床性能和耐用性.

研究的目的:

研究改性PCA (PCA-VA-8) 的分子量和度对GIC综合性能的影响.
通过聚合物修饰来增强GIC的机械性能,耐水性和释.

主要方法:

通过受控的自由基共聚化合成具有不同分子量的PCA-VA-8聚合物.
使用不同的PCA-VA-8度和粉末-液体比率来制订实验GIC.
根据ISO标准评估的机械性能 (屈曲强度,模量,压力强度),水吸附,溶解性,耐老化和释放.

主要成果:

最佳配方 (分子量约8×104,50重%PCA- VA-8,3. 6: 1 P: L比率) 显示显著增强机械性能.
在4周的水老化后,优化的GIC表现出比商业Fuji IX-GIC高33%至63%的屈曲强度,水吸附率降低.
观察到持续的治疗化物释放,尽管最初的突破低于商业对照.

结论:

用VA间隔器修改PCA可以提高聚合物链的灵活性,从而提高GIC的机械性能.
开发的GIC配方符合耐水性和持续释的临床要求.
这代表了下一代牙科修复材料的有希望的进步.

关键词:

酸间隔剂玻璃离子水泥机械性能分子重量优化聚基因酸的修饰

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