用10%的过氧化在家中进行漂白后,用不同抗氧化剂处理的面膜的色彩稳定性
Rodrigo Chiles Pereira1, Letícia Vasconcelos Silva de Souza1, Matheus Kury1
1Universidade Estadual de Campinas, Faculdade de Odontologia de Piracicaba, Departamento de Odontologia Restauradora, Piracicaba, SP, Brasil.
Journal of applied oral science : revista FOB
|June 17, 2025
概括
抗氧化剂在漂白后没有影响牙面膜颜色的稳定性,显示出高的抗氧化活性. 然而,一些酸性pH抗氧化剂可能会造成牙损伤的风险.
科学领域:
- 牙科材料科学 牙科材料科学
- 生物材料是一种生物材料.
- 表面化学 表面化学
背景情况:
- 用过氧化 (HP) 漂白牙是一种常见的美容程序.
- 人们担心牙面膜可能受到损害,以及牙漂白后结合强度受到损害.
- 建议使用抗氧化剂来减轻这些不良影响.
研究的目的:
- 为了评估用10%的过氧化 (HP) 以及各种抗氧化剂处理的牛乳液的色彩稳定性.
- 评估这些抗氧化剂的pH值和抗氧化活性 (AA%).
主要方法:
- 牛质-牙块经过了漂白,然后用不同的抗氧化剂 (α-托科菲罗尔,绿茶提取物,葡萄提取物,酸,菜提取物,酸) 处理.
- 使用光谱光度计测量了颜色稳定性 (ΔE00, ΔWID).
- 剂的pH值和抗氧化活性 (AA%) 通过pH计和DPPH方法分别确定.
主要成果:
- 在白化组和用抗氧化剂治疗组之间没有观察到颜色稳定性 (ΔE00,ΔWID) 的显著差异.
- 抗氧化剂表现出高且可比的抗氧化活性 (92.6%97.6%).
- 奎尔塞丁 (QC_1%) 和奎诺亚提取物 (QUI_10%) 呈现酸性pH水平,而α-托科菲罗尔 (TOC_10%) 和葡萄提取物 (GS_5%) 显示性pH.
结论:
- 评估的抗氧化剂并没有对漂白后面膜的色彩稳定性产生负面影响.
- 所有测试的抗氧化剂都显示出显著的抗氧化活性.
- 具有酸性pH值的抗氧化剂 (quercetin,菜提取物) 需要谨慎应用,因为可能会导致质去矿化风险.
相关概念视频
Effects of EDTA on End-Point Detection Methods
353
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...
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...
353
Masking and Demasking Agents
2.7K
EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...
2.7K
Titration of Polyprotic Base with a Strong Acid
884
The titration of a polyprotic base such as sodium carbonate with a strong acid such as hydrochloric acid results in two equivalence points on the titration curve. At the first equivalence point, the carbonate ions in the base are completely converted to bicarbonate ions. The second equivalence point corresponds to the complete conversion of bicarbonate ions to carbonic acid, which dissociates into carbon dioxide and water. The region before the first equivalence point corresponds to the...
884


