复合树脂的光强度,用于使用光辅助识别技术直接去除面板
Giovana Maria Zeine1, Érika Mayumi Omoto1, Fernanda de Souza E Silva Ramos1
1Department of Preventive and Restorative Dentistry, São Paulo State University (UNESP), School of Dentistry, Campus of Araçatuba, Araçatuba, SP, Brazil.
概括
使用光辅助识别技术 (FIT) 删除的高光复合树脂导致牙磨损较少. 切口三分之一经历了最多的磨损在直接涂层去除.
科学领域:
- 牙科材料科学 牙科材料科学
- 恢复性牙科 恢复性牙科
- 生物材料是一种生物材料.
背景情况:
- 在美学牙科中,直接修复 Veneer 是常见的.
- 复合面板的再处理需要小心地去除材料,以尽量减少牙结构损失.
- 光辅助识别技术 (FIT) 已被提议用于帮助复合材料的去除.
研究的目的:
- 为了评估复合树脂光强度如何影响牙磨损在直接贴面重新处理.
- 为了比较使用常规与FIT去除方法的牙磨损和残留物质的存在.
主要方法:
- 使用了60个牛切割刀,应用了不同光度 (低,中,高) 的复合树脂.
- 牙接受了传统的 (CON) 或光辅助识别技术 (FIT) 切除.
- 在复合材料切除前后进行3D扫描,以量化额外的牙磨损和残留材料.
主要成果:
- 与低光复合材料相比,高光复合材料显示出较少的额外牙磨损和宫三分之一更多的残留物.
- 在低和中等光复合材料的宫和中三分之一中,FIT导致的额外磨损比CON更大.
- 切口三分之一的牙磨损明显比其他区域更大.
结论:
- 具有高光强度的复合树脂,当用FIT去除时,会导致减少牙磨损.
- 切口三分之一是直接去除 Veneer 时最脆弱的区域.
- 复合光强度是影响FIT切除期间牙磨损的关键因素.
相关概念视频
01:25Fluorescence and Phosphorescence: Instrumentation
592
Fluorometers and spectrofluorometers are two types of instruments used for measuring molecular fluorescence. These instruments differ in how they select excitation and emission wavelengths and the type of light sources they utilize. Fluorometers use absorption interference filters to choose excitation and emission wavelengths. The excitation source in a fluorometer is typically a low-pressure mercury vapor lamp that emits intense lines distributed throughout the ultraviolet and visible regions.
592
01:37Super-resolution Fluorescence Microscopy
7.0K
Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been...
7.0K
01:12Immunofluorescence Microscopy
10.4K
A fluorescence microscope uses fluorescent chromophores called fluorochromes, which can absorb energy from a light source and then emit this energy as visible light. Fluorochromes include naturally fluorescent substances (such as chlorophylls) and fluorescent stains that are added to the specimen to create contrast. Dyes such as Texas red and FITC are examples of fluorochromes. Other examples include the nucleic acid dyes 4’,6’-diamidino-2-phenylindole (DAPI), and acridine orange.
10.4K
01:16Confocal Fluorescence Microscopy
13.2K
Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
13.2K
01:14Photoluminescence: Applications
393
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
393