设置生物陶内密封剂的Er:YAG激光照射表面效应 - 在体外SEM研究中
1Department of Operative Dentistry and Endodontics, Faculty of Dental Medicine, Medical University of Plovdiv, Plovdiv, Bulgaria.
Frontiers in bioengineering and biotechnology
|May 9, 2025
概括
埃尔:YAG激光器有效地改变了像BioRoot RCS.这样的生物陶密封剂. 更高的能量设置和更长的辐射时间会产生更显著的表面变化,这表明激光辅助内牙再处理的潜力.
科学领域:
- 牙周内科医院 牙周内科医院 牙周内科医院
- 牙科材料科学 牙科材料科学
- 激光牙科 激光牙科
背景情况:
- 生物陶内密封剂越来越多地使用.
- 有效的去除方法对于内牙再处理至关重要.
- 埃尔:YAG激光显示出用于清除密封剂的前景.
研究的目的:
- 为了评估Er:YAG激光照射对设置BioRoot RCS的影响.
- 为了比较不同激光设置和辐射持续时间的影响.
- 评估激光辅助去除生物陶密封剂的潜力.
主要方法:
- 生物根RCS标本使用Er:YAG激光系统进行辐射.
- 测试了两个不同的激光设置 (300mJ,250mJ) 和两个时间持续时间 (20s,40s).
- 用扫描电子显微镜 (SEM) 在各种放大度下分析了表面变化.
主要成果:
- Er:YAG激光照射引起了显著的宏观和微观表面变化.
- 更高的能量设置 (300mJ) 和更长的辐射时间 (40s) 会导致更大的表面变化.
- B组 (300mJ,40s) 和D组 (250mJ,40s) 的变化相对A组 (300mJ,20s) 和C组 (250mJ,20s) 的变化更为显著.
结论:
- 埃尔:YAG激光照射有效地改变了设置BioRoot RCS.的表面.
- 增加照射时间和更高的能量设置增强了激光的效果.
- 这项研究表明Er:YAG激光器在内牙再处理中对生物陶密封体去除的潜力.
相关概念视频
Scanning Electron Microscopy
A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
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Preparation of Samples for Electron Microscopy
To be visualized by an electron microscope, either transmission or scanning, biological samples need to be fixed (stabilized) so the electron beam does not destroy them and dried thoroughly (desiccated/dehydrated) so the vacuum does not affect them. Fixation needs to be done as quickly as possible because the sample properties will start changing as soon as it is removed from its natural environment. For example, in a tissue sample, the oxygen levels begin decreasing, causing an altered...


