试用程序和表面处理策略:优化脱酸盐修复的疲劳行为
Telma de Souza Pires1, Felipe Somavilla Binotto1, Maria Gabriela Packaeser2
1Faculty of Dentistry, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil.
Journal of the mechanical behavior of biomedical materials
|April 20, 2025
概括
优化脱酸陶疲劳性能需要仔细地处理表面. 在试用前一次应用酸 (HF) 和西兰,然后进行酸 (H3PO4) 清洁,在老化后产生最好的结果.
科学领域:
- 牙科材料科学 牙科材料科学
- 陶修复器的使用 陶修复器的使用
- 生物材料工程是生物材料的工程.
背景情况:
- 二氧化陶由于其美学和机械性能,被广泛用于牙科修复.
- 表面处理对于确保陶修复的长期耐用性和粘合性至关重要.
- 试用程序可能会损害陶表面的完整性,需要优化清洁和再处理协议.
研究的目的:
- 为了研究不同表面处理策略在试用阶段对脱酸陶疲劳性能的影响.
- 为了比较疲劳故障负载 (FFL) 和故障循环 (CFF) 的标本经过各种试验前和试验后的表面处理.
- 确定最佳的表面处理方案,以在模拟临床使用后保持脱酸盐恢复的机械完整性.
主要方法:
- 盘状的二酸盐样品被分为四组,表面处理不同 (CTRL,HFSIL PRE,HFSIL PRE + SIL POST,HFSIL PRE + HFSIL POST).
- 处理涉及37%酸 (H3PO4),5%酸 (HF) 的组合,并在试验模拟之前和/或之后应用西兰.
- 标本被粘合到树脂盘上,并在24小时的水储存 (基线) 和老化 (25,000个热循环) 后接受疲劳测试.
主要成果:
- 在基线时,两组之间没有观察到疲劳行为的显著差异.
- 在老化后,与HFSIL PRE + HFSIL POST组相比,HFSIL PRE组表现出更好的疲劳性能.
- 在所有群体中,老化显著减少了FFL和CFF,突出了热循环对陶疲劳抵抗的不利影响.
结论:
- 在试用前单次涂抹酸 (HF) 和西兰,然后进行酸 (H3PO4) 清洗,可以优化二酸盐修复的疲劳性能.
- 在试进后不需要使用HF重新蚀刻,并且可能会对脱酸陶的疲劳行为产生负面影响.
- 在试用期间进行适当的表面管理对于陶牙科修复的长期临床成功和耐用性至关重要.
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