In vitro FT-IR study of the effects of hydrogen peroxide on superficial tooth enamel
In vitro FT-IR study of the effects of hydrogen peroxide on superficial tooth enamel
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DOI：
10.1016/j.jdent.2006.10.004
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发表时间：
2007-04-01
影响因子：
4.4
通讯作者：
Hegedus, Csaba
中科院分区：
文献类型：
--
作者：
Bistey, Tamas;Nagy, Istvan P.;Hegedus, Csaba
目的：本研究的目的是使用傅立叶变换红外光谱法测定过氧化氢处理后人牙釉质的变化。据推测，红外光谱是能够显示在人类牙釉质的变化后，过氧化氢处理和牙釉质的变化是成比例的过氧化物concentration.Methods：10，20和30%的过氧化氢溶液对人类牙釉质的影响进行了测试。30颗因牙周原因拔除的非龋性人类牙齿用于本研究。根据过氧化物浓度将其分为3组，每组10只，切片，并将标本包埋在树脂中进行红外光谱分析。结果：红外光谱分析显示有两个明显的特征谱带（生物PO 4 nu 1和nu 2），这两个谱带能够描述釉质结构的变化。通过比较未处理和处理样品的红外光谱，在表面釉质中检测到结构变化。釉质的改变与处理时间和过氧化氢浓度成正比。较高的浓度和较长的处理时间导致更严重的变化。光谱的数值分析表明，在使用浓过氧化氢溶液时，红外光谱的改变更明显。治疗后1周的光谱没有表现出自发的可逆性在釉质structure.Conclusion：在家里和在办公室的含过氧化物漂白剂是能够引起改变的釉质在低和高浓度以及。根据这项研究的结果，建议使用低浓度的氢和/或过氧化脲进行牙齿美白，并缩短治疗时间，以减少可能的破坏，但达到所需的颜色变化。(c)2006爱思唯尔有限公司保留所有权利。
Objectives: The aim of the present study was to determine the alteration in human enamel after hydrogen peroxide treatment using FT-IR spectroscopy. It is hypothesized that infrared spectroscopy is capable of showing alterations in human enamel after peroxide treatment and the alteration in enamel is proportional to peroxide concentration.Methods: The effects of 10, 20 and 30% hydrogen peroxide solutions on human enamel were tested. Thirty non-carious human teeth, extracted for periodontal reasons, were used in this study. They were divided into 3 groups of 10, according to the peroxide concentration, sectioned, and the specimens were embedded in resin for infrared spectroscopic analysis. The total treatment time was 120 min. Spectra of the specimens were taken before treatment and 30, 60 and 120 min after it. Another spectrum was taken in a week.Results: Infrared spectroscopic analysis showed two distinct bands (biological PO4 nu 1 and nu 2) that were capable of describing the alterations in enamel structure. on comparing the infrared spectra of non-treated and treated specimens, structural changes were detected in the superficial enamel. The alteration in enamel was proportional to treatment time and hydrogen peroxide concentration. Higher concentration and longer treatment time resulted in more severe alterations. The numerical analysis of the spectra revealed that on using concentrated hydrogen peroxide solutions the alterations of the IR spectra were more pronounced. The spectra taken in 1 week after treatment did not show spontaneous reversibility in enamel structure.Conclusion: At-home and in-office peroxide-containing bleaching agents are capable of causing alteration in enamel at low and high concentrations as well. According to the results of this study it is recommended to perform tooth whitening using low concentration of hydrogen and/or carbamide peroxide, and shorten treatment time to reduce the possible destruction but reach the required change in color. (c) 2006 Elsevier Ltd. All rights reserved.