固是否会影响通用双固化水泥的边缘连续性和转换度?
Leila Es Sebar1, Andrea Baldi2, Allegra Comba2
1Department of Applied Science and Technology, Politecnico di Torino, 10129 Turin, Italy.
Materials (Basel, Switzerland)
|June 27, 2025
概括
选择合适的聚合方案是牙冠的关键. 与鱼固化相比,标准协议改善了边际适应和转换,确保了更好的恢复寿命.
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
- 恢复性牙科 恢复性牙科
背景情况:
- 全陶皇冠的长期成功在很大程度上取决于牙科水泥的适当聚合.
- 了解不同聚合技术对水泥性能的影响对于临床应用至关重要.
研究的目的:
- 评估两种不同的聚合协议对通用双固化水泥边缘适应和转换度 (DC) 的影响.
- 评估热老化对这些特性的影响.
主要方法:
- 全陶皇冠 (增强酸) 使用通用双固化水泥制造和凝固.
- 测试了两种聚合协议:G1 (微刷过量去除,1分钟等待,20秒光疗法) 和G2 (5s tack cure,scaler过量去除,20s光疗法).
- 通过微计算机断层扫描分析了边际适应,并通过拉曼光谱测量了在10,000个热循环之前和之后的DC.
主要成果:
- 与标准协议 (G1) 相比,固协议 (G2) 导致边际适应明显较差.
- 在热老化后,群体之间没有观察到边际适应的显著差异.
- 基线DC在所有样本中都很高,没有初始协议依赖的变化. 在G1组中,热老化增加了直流.
结论:
- 选择合适的聚合方案对于在全陶修复中实现最佳边缘适应至关重要.
- 虽然这两种协议都产生了高的初始直流电流,但标准协议显示出优越的边际完整性,在老化后保持不变.
- 临床建议应支持确保更好的边缘密封的协议,以提高恢复的耐用性.
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