不同pH值的办公室漂白凝的分解速度和漂白效率:一项随机对照试验
Fernanda Novak Gumy1, Karine Letícia da Silva1, Marcela Novak Gumy2
1Department of Restorative Dentistry, State University of Ponta Grossa, Av. General Carlos Cavalcanti, 4748, Ponta Grossa, Brazil.
Clinical oral investigations
|July 23, 2024
概括
在牙漂白中使用的高度过氧化 (HP) 凝,无论pH值如何,都显示出类似的美白效果. 大多数HP在50分钟后仍然存在,这表明可能会降低度而不会影响结果.
科学领域:
- 牙科材料科学 牙科材料科学
- 生物材料科学是生物材料的科学.
背景情况:
- 在办公室牙漂白使用高度过氧化 (HP) 凝.
- 这些凝的pH值可能会影响HP分解和漂白效率.
研究的目的:
- 为了评估活性过氧化 (HP) 的分解速度和高度HP凝的漂白效果,在办公室牙漂白期间具有不同的pH值.
主要方法:
- 一项随机,双盲控制试验涉及40名志愿者,分为四组 (pH5.4,7.0,7.7,8.0).
- 通过定位测量活性HP度,并记录pH值.
- 使用光谱光度计 (∆Eab, ∆E00, WI D) 和阴影指南 (∆SGU) 评估了漂白功效.
- 统计分析包括ANOVA和Tukey的后期测试.
主要成果:
- 所有凝都显示了HP度在50分钟内下降,pH值5.4的凝显示了最大的减少.
- 在pH值8.0和7.7的凝保持稳定,而pH值5.4保持酸性,pH值7.0变为酸性.
- 两组之间没有发现漂白效率的显著差异.
- 所有的凝在两次治疗和1个月的随访后都实现了临床显著和稳定的颜色变化.
结论:
- 所有经过测试的HP漂白凝在50分钟后都保留了70%以上的活性成分,这表明存在潜在的余.
- 在所有测试的pH值中观察到类似的美白效果,结果在一个月内保持稳定.
- 较低的HP度可能足以进行有效的牙漂白,从而可能减少副作用.
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