使用飞行时间二次离子质谱和电子显微镜的高分辨率特征化乳重矿化
Andreas Kiesow1, Maria Morawietz1, Jennifer Gruner2
1Fraunhofer Institute for Microstructure of Materials and Systems IMWS, Halle (Saale), Germany.
Caries research
|February 8, 2024
概括
高分辨率成像技术可视化化物和的透在牙的牙质在重矿化过程中. 这项研究为了解和研究牙腐烂过程提供了新的工具.
科学领域:
- 牙科研究 牙科研究
- 材料科学是一种材料科学.
- 分析化学是一种分析化学.
背景情况:
- 牙损是一种去矿化-重矿化过程.
- 了解面膜微观结构和重矿化过程中的化学变化至关重要.
- 需要高分辨率技术来可视化这些变化.
研究的目的:
- 评估高分辨率的飞行时间二次离子质谱法 (ToF-SIMS) 以可视化虫重矿化过程中的乳液变化.
- 为了研究化物 (F) 和 (Ca) 在人造病变中的分布.
- 为了探索不同化物治疗的有效性.
主要方法:
- 在体外研究中使用人体内的人工病变.
- 用不同度的化 (NaF) 和化 (SnF2) 处理牙膏.
- 使用ToF-SIMS,微硬度,扫描电子显微镜 (SEM) 和高分辨率传输电子显微镜 (HR-TEM) 的分析.
主要成果:
- HR-TEM揭示了显著的微观结构区域和重矿化过程中的晶体性回归.
- ToF-SIMS化学测绘显示了在病变中的分布,在重矿化矿物中定位.
- 这两种元素都穿透了杆间的空间,表明酸损伤的传播.
结论:
- ToF-SIMS和HR-TEM为化物和的透通道提供了新的见解.
- 这些高分辨率技术为研究病过程和重矿化功效提供了新的工具.
- 化物剂量对反应的差异化成功,证实了该技术的灵敏性.
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