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Color stability of relined dentures after chemical disinfection. A randomised clinical trial

机译:化学消毒后内衬义齿的颜色稳定性。一项随机临床试验

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摘要

Background: This randomised clinical study evaluated the effect of chemical disinfection with sodium perborate or chlorhexidine on the color stability of a hard chairside reline resin during six months.Methods: Hard chairside reline resin (Tokuyama Rebase Fast II) was used to reline complete dentures. After baseline color measurements, the patients were randomly divided into 3 groups (n = 15) and allocation was concealed with the use of the BioStat program. The dentures were cleansed according to three methods: CG (control group) - brushing with coconut soap and soft toothbrush, PG (Perborate group) - brushing according to previous methods and disinfection with warmed sodium perborate solution (Corega Tabs) for 5 min, once a day for 6 months and ChxG (Chlorhexidine Group) - brushing according to CG and disinfection with chlorhexidine digluconate 2% for 5 min once a day for 6 months. The data of Delta E*, Delta L*, Delta a* and Delta b* were analysed by 2-way repeated-measures ANOVAs and Tukey tests (alpha = 0.05).Results: There were significant differences amongst groups for Delta L, Delta a and Delta b. The time had a significant effect on Delta E and Delta L, for all groups evaluated.Conclusion: Changes in some color parameters (Delta L, Delta a and Delta b) of the reline resin Tokuyama Rebase were observed when the dentures were disinfected by perborate and chlorhexidine digluconate 2% solutions. The color stability of was also influenced by time, regardless of disinfection or nondisinfection.Clinical implications: Color stability of the denture materials is one variable to be considered when choosing disinfection methods. The data in this study will be useful to clinicians when they are selecting disinfectant solutions for disinfection of relined denture. (C) 2011 Elsevier Ltd. All rights reserved.
机译:背景:这项随机临床研究评估了用高硼酸钠或洗必泰进行化学消毒对硬椅旁修补树脂在六个月内的颜色稳定性的影响。方法:硬椅旁修补树脂(Tokuyama Rebase Fast II)用于对全口义齿进行修补。在进行基线颜色测量后,将患者随机分为3组(n = 15),并使用BioStat程序隐藏分配。根据以下三种方法清洁假牙:CG(对照组)-用椰子皂和软牙刷刷牙,PG(过硼酸盐组)-按照以前的方法刷牙,并用加热的过硼酸钠溶液(Corega Tabs)消毒5分钟,一次每天一次,持续6个月,ChxG(洗必泰组)-根据CG刷牙,并用2%的洗必太二葡萄糖酸酯消毒5分钟,每天一次,持续6个月。通过2次重复测量方差分析和Tukey检验分析Delta E *,Delta L *,Delta a *和Delta b *的数据(alpha = 0.05)。结果:Delta L,Delta之间各组之间存在显着差异a和Delta b。时间对所有评估组的Delta E和Delta L都有显着影响。结论:当用过硼酸盐消毒假牙时,观察到线性树脂Tokuyama Rebase的一些颜色参数(Delta L,Delta a和Delta b)的变化。和氯己定二葡萄糖酸酯2%溶液。无论是否进行消毒或未消毒,其颜色稳定性都会受到时间的影响。临床意义:义齿材料的颜色稳定性是选择消毒方法时要考虑的变量之一。当临床医生选择用于消毒义齿的消毒液时,本研究中的数据将对其有用。 (C)2011 Elsevier Ltd.保留所有权利。

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