牙齿漂白后对再色素沉着的易感性:一项体外研究

A. Dash, Avoy Dash, B. Goyal
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引用次数: 2

摘要

更白或更亮的微笑是美丽的微笑的基石,可以通过漂白来实现。公众对外表的关注部分地促进了人们对牙科美容和漂白技术的关注。据报道,漂白溶液在漂白后会导致表面牙釉质的改变和矿物质含量的损失。这些牙釉质表面的不规则性会导致牙釉质更容易重新着色,从而对美白治疗产生不利影响。目的:评价35%过氧化氢(h2o2)和16%过氧化脲两种漂白材料对牙齿再着色的敏感性。对象与方法:本研究将30颗拔牙分为3组。第一组用35% h2o2漂白,第二组用16%过氧化脲漂白,第三组作为对照。然后用硝酸银染色来评估它们在漂白后对色素沉着的敏感性。在漂白前、漂白后和色素沉着后,使用Vita色度指南记录每颗牙齿的色度。结果:结果显示,用硝酸银染色后,各组牙齿颜色变深,但两组样品色度值的变化量不同。色素沉着后,组1的色度变化大于组2。通过单因素方差分析,I组和II组之间的色度变化具有统计学意义(P < 0.05)。结论:因此,我们认为漂白后色素沉着的易感性增加。此外,当h2o2用于漂白时,色素沉着更大。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Susceptibility of teeth to re-pigmentation after bleaching: An in vitro study
Introduction: Whiter or brighter smile, which is a cornerstone of a beautiful esthetic smile, can be achieved by bleaching. The public concern about appearance has been partly responsible for increased awareness in esthetic dentistry and consequently bleaching techniques. Bleaching solutions have been reported to cause alterations and loss of mineral content in surface enamel after bleaching. These irregularities in enamel surface could result in more susceptibility to re-pigmentation, thereby adversely affecting the whitening treatment. Aim: To evaluate the susceptibility of teeth to re-pigmentation using two different bleaching materials, i.e. 35% hydrogen peroxide (H 2 O 2 ) and 16% carbamide peroxide. Subjects and Methods : In this study, 30 extracted teeth were divided in three groups. Group I was bleached with 35% H 2 O 2 , Group II with 16% carbamide peroxide, and Group III was used as control. They were then stained with silver nitrate stain to evaluate their susceptibility to pigmentation after bleaching. The shade of each tooth was recorded before bleaching, after bleaching, and after pigmentation using a Vita shade guide. Results: Results showed that after staining with silver nitrate, the teeth in all groups became darker but the amount of change in the shade value of the samples was different for the two groups. The change of shade was greater for Group I as compared to Group II after pigmentation. This change in shade between Groups I and II was found to be statistically significant using one-way ANNOVA test (P < 0.05). Conclusions : Thus, we concluded that susceptibility to pigmentation increases after bleaching. Furthermore, pigmentation is greater when H 2 O 2 is used for bleaching.
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