侵蚀对染色二酸盐修复的光学特性和表面纹理的影响
Fateme Abdarjouy1, Farideh Gerami-Panah2, Leila Sedighpour2
1School of Dentistry, Tehran University of Medical Sciences, Tehran, Iran.
International journal of dentistry
|October 22, 2025
概括
模拟胃酸对脱酸陶颜色和表面完整性产生负面影响. GC初始光谱显示出比IPS Ivocolor更好的耐药性,这表明暴露于酸的患者的长期性能优越.
科学领域:
- 牙科材料科学 牙科材料科学
- 陶修复 陶修复 陶修复
- 生物材料是一种生物材料.
背景情况:
- 二氧化陶广泛用于牙科修复.
- 评估内在酸暴露对陶美学和完整性的影响对于长期临床成功至关重要.
研究的目的:
- 为了评估模拟胃酸对表面地形,色彩稳定性和染色二酸盐陶透光度的影响.
- 为了在酸性条件下比较两个不同的染色和玻璃系统的性能.
主要方法:
- 根据染色/玻璃材料 (IPS Ivocolor Essence和GC Initial IQ光泽糊) 将20个脱酸陶标本分为两组.
- 标本被浸入模拟的胃酸 (0.113% HCl) 在37°C下96小时.
- 在酸暴露前后评估了表面地形 (SEM,形状测量),颜色和半透明度.
主要成果:
- 暴露在酸中显著改变了两组陶的颜色,在IPS Ivocolor组更明显的变化 (p < 0.001).
- 在酸浸泡后,IPS Ivocolor组的表面粗度显著增加.
- 在酸暴露后,透明度参数在两组中都没有受到影响.
结论:
- 模拟胃酸对脱酸陶的颜色和表面完整性产生不利影响,特别是那些用IPS Ivocolor染色的陶.
- 与IPS Ivocolor相比,GC初始光谱表现出对酸性条件的优越抵抗力.
- 对于容易暴露于内在酸的患者来说,GC初始光谱可能会提供更好的长期耐用性.
相关概念视频
01:03Fixation and Sectioning
Two basic types of preparation are used to visualize specimens with a light microscope: wet mounts and fixed specimens.
The simplest type of preparation is the wet mount, in which the specimen is placed in a drop of liquid on the slide. A liquid specimen can be directly deposited on the slide using a dropper. Solid specimens, such as skin scraping, can be placed on the slide before adding a drop of liquid to prepare the wet mount. Sometimes the liquid is simply water, but stains are often added...
The simplest type of preparation is the wet mount, in which the specimen is placed in a drop of liquid on the slide. A liquid specimen can be directly deposited on the slide using a dropper. Solid specimens, such as skin scraping, can be placed on the slide before adding a drop of liquid to prepare the wet mount. Sometimes the liquid is simply water, but stains are often added...
01:18Effects of EDTA on End-Point Detection Methods
Different methods, such as visual observance of metal-ion indicators, spectroscopic techniques, and potentiometric methods, can determine the endpoint of an EDTA titration.
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a result, EDTA...
In the visual method, metal-ion indicators (metallochromic dyes), which have distinct colors in their free and complex forms, are added to the mixture to signal the titration's end point. They form stable complexes with metal ions, but these complexes are weaker than the corresponding metal–EDTA complexes. As a result, EDTA...
01:22Effect of Sea Water on Concrete
Concrete exposed to seawater can undergo degradation like the dissolution of ettringite and gypsum, increasing the material's porosity and decreasing its strength. In contrast, the crystallization of salts within the concrete's pores can cause expansion, particularly above the waterline where evaporation occurs. Nonetheless, this expansion only happens when seawater, enabled by the concrete's permeability, manages to infiltrate the structure.
Concrete in areas between tide marks, which undergo...
Concrete in areas between tide marks, which undergo...
01:24Simple Staining Technique
OverviewStaining techniques in microscopy enhance the visualization of microorganisms by increasing contrast and allowing the differentiation of cellular structures. Simple staining is one of the fundamental methods used to observe the basic morphological characteristics of microorganisms, including their size, shape, and arrangement. This method relies on the application of a single dye to stain the entire cell, producing a clear contrast between the cell and the background.FixationFixation is...