用于非生命牙齿漂白的漂白剂效果的分光光度分析

Micheli dos Reis Santos, Fabíola Bastos de Carvalho, M. C. Cangussú, L. Barros, Renan Ferreira Trindade
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引用次数: 3

摘要

目的:本研究的目的是比较三种不同的物质用于漂白非生命牙齿的效率。方法:将40颗牛牙分为5组:3个试验组(过硼酸钠+ 20%过氧化氢- SPG;37%过氧化脲- CPG;35%过氧化氢- HPG)和两个对照组(CG1和CG2)。试验组的牙齿被血液人工染色,并使用室内漂白和步行漂白技术进行漂白。通过比较CIELab系统分光光度法测得的颜色变量L*、a*和b*,客观评价漂白剂的效果。数据分析采用方差分析和Tukey检验,显著性水平为5%。结果:染色后亮度(L*)降低,漂白后亮度增加。染色后a*和b*值升高,使用漂白物质后降低。结论:所有用于非生命牙漂白的物质均具有相同的漂白效果。实验结束时,在漂白技术之间没有观察到这种效率的显着差异。然而,室内漂白在较短的时间内提供了与步行漂白相同的漂白效果。临床意义:鉴于对美容的需求不断增加,使用不同的漂白技术和各种增白剂,口腔卫生专业人员应该提供循证治疗,更有效和更短的时间。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Spectrophotometric analysis of the effectiveness of bleaching agents used for non-vital teeth bleaching
Objectives : This study aimed to compare the efficiency of three different substances used for the bleaching of non-vital teeth. Methods : Forty bovine teeth were divided into five groups: three test groups (sodium perborate + 20% hydrogen peroxide – SPG; 37% carbamide peroxide – CPG; 35% hydrogen peroxide – HPG) and two control groups (CG1 and CG2). Teeth of the test groups were stained artificially with blood and bleached using the in-office and walking bleach techniques. The efficiency of the bleaching agents was evaluated objectively by comparing the color variables L*, a*, and b* measured spectrophotometrically according to the CIELab system. The data were analyzed by ANOVA and the Tukey test, adopting a 5% level of significance. Results : The results showed a reduction in lightness (L*) after staining and an increase after the bleaching sessions. The values of a* and b* increased after staining and decreased after the application of the bleaching substances. Conclusions : All substances used for non-vital tooth bleaching exhibited the same bleaching efficiency. No significant differences in this efficiency were observed between the bleaching techniques at the end of the experiment. However, in-office bleaching provided the same bleaching result as the walking bleach technique within a shorter period. Clinical significance: Given the increasing demand for esthetics, the use of different bleaching techniques and the variety of whitening agents, oral health professionals should offer evidence-based treatment, more efficient and in less time.
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