附甲状腺激素杂纳米颗粒对多尺度建模和在树脂-牙接口上的酸酸形成的影响
Manuel Toledano1, Fátima S Aguilera1, Estrella Osorio1
1University of Granada, Faculty of Dentistry, Colegio Máximo de Cartuja s/n, Granada 18071, Spain.
概括
副甲状腺激素合纳米颗粒 (PTH-NP) 增强树脂-牙接口中的酸形成和结晶性,改善机械性能. 没有使用过的纳米颗粒显示出有限的矿化和稳定性.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术 纳米技术
- 牙科材料 牙科材料
背景情况:
- 树脂-牙接口对于牙科修复至关重要,但其长期稳定性受到退化挑战.
- 纳米粒子透提供了一个有希望的策略来加强这种接口.
- 已知副甲状腺激素 (PTH) 刺激骨形成,这表明牙重矿化的可能性.
研究的目的:
- 研究甲状腺激素合聚合物纳米粒子 (PTH-NP) 对酸形成,结晶性和树脂-牙接口的机械性能的影响.
- 为了比较PTH-NP在机械和热应力下与未使用剂的纳米粒子 (NP) 的性能.
主要方法:
- 蚀刻的牙表面被NP或PTH-NP透.
- 结合接口受到负载循环和热循环的影响.
- 评估包括纳米机械测试 (纳米DMA),原子力显微镜 (AFM),X射线衍射 (XRD) 和传输电子显微镜 (TEM).
主要成果:
- PTH-NP的透导致了显著的内矿物沉,牙管的完全封闭,并增强了混合层的特性.
- 用PTH-NP处理的样本表现出更高的复杂模量和更低的色三角值,表明机械性能得到改善,能量消耗减少.
- PTH-NP促进了具有高结晶度,结晶体大小和微链的氧酸盐形成,而未使用的NP则导致稳定性较低的无形沉物.
结论:
- 用PTH-NP透丁有效促进纤维内矿化和先进的氧酸盐结晶性,导致树脂-丁接口的优越机械性能.
- 由PTH-NP形成的矿物沉物是具有高化学稳定的氧酸盐纳米棒.
- 无兴奋剂的NP显示出有限的有效性,导致稀缺的结晶性,杂质和生物降解性,突出显示PTH在矿化中的关键作用.
关键词:
航空飞行管理 (AFM)牙上的牙.负载循环是指负载循环.机械性质 机械性质矿物矿物质是一种矿物质.纳米-DMAMA是一个非常简单的方法.重矿化是一种重矿化.这就是TEMEM.热循环的热循环处理方法XRD XRD 在线观看更多相关视频
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