中国组织工程研究 ›› 2026, Vol. 30 ›› Issue (2): 296-302.doi: 10.12307/2026.512

• 组织工程口腔材料 tissue-engineered oral materials • 上一篇    下一篇

过氧化脲和过氧化氢两种漂白剂对牙本质拉曼光谱激光诱导荧光的影响

李锐强1,尹  晨2,马  琰1   

  1. 1新疆医科大学第二附属医院口腔科,新疆维吾尔自治区乌鲁木齐市  830000;2新疆医科大学研究生院,新疆维吾尔自治区乌鲁木齐市  830000
  • 收稿日期:2024-09-29 接受日期:2024-11-26 出版日期:2026-01-18 发布日期:2025-06-10
  • 通讯作者: 马琰,副主任医师,新疆医科大学第二附属医院口腔科,新疆维吾尔自治区乌鲁木齐市 830000
  • 作者简介:李锐强,男,1999年生,湖南省株洲市人,汉族,新疆医科大学在读硕士,主要从事牙齿美白方向研究。
  • 基金资助:
    新疆维吾尔自治区自然科学基金项目(2022D01C265),项目负责人:马琰,项目名称:过氧化脲处理对牙本质拉曼光谱激光诱导荧光影响的实验研究

Effect of carbamide peroxide and hydrogen peroxide bleaching agents on laser-induced fluorescence in dentin Raman spectroscopy

Li Ruiqiang1, Yin Chen2, Ma Yan1   

  1. 1Department of Stomatology, Second Affiliated Hospital of Xinjiang Medical University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China; 2Graduate School of Xinjiang Medical University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China
  • Received:2024-09-29 Accepted:2024-11-26 Online:2026-01-18 Published:2025-06-10
  • Contact: Ma Yan, Associate chief physician, Department of Stomatology, Second Affiliated Hospital of Xinjiang Medical University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China
  • About author:Li Ruiqiang, Master candidate, Department of Stomatology, Second Affiliated Hospital of Xinjiang Medical University, Urumqi 830000, Xinjiang Uygur Autonomous Region, China
  • Supported by:
    Natural Science Foundation of Xinjiang Uygur Autonomous Region, No. 2022D01C265 (to MY)

摘要:

文题释义:
漂白剂:是一类化学试剂,通过氧化还原反应将有色小分子物质转化为无色小分子物质,使颜色去除或变淡以达到漂白的效果,常用的漂白剂有过氧化氢和过氧化脲。
激光诱导荧光:产生拉曼光谱荧光背景的物质与生物组织中存在的有机成分有关,牙齿作为生物样本的拉曼光谱具有一个很强的激光诱导荧光背景,在漂白剂对牙齿进行漂白后这个荧光背景显著降低,与此同时牙齿的颜色发生了明显改变,二者的变化具有很强的相关性。

背景:过氧化氢类漂白剂被广泛用于临床牙齿美白治疗,但其作用机制至今没有统一的定论。
目的:检测中性10%过氧化脲和中性40%过氧化氢两种漂白剂对牙齿的影响,探寻牙齿美白的机制。
方法:收集因正畸治疗拔除的废弃牙齿45颗,制作牙本质切片后进行抛光处理,去除玷污层后随机分3组,对照组(n=15)放入去离子水中,过氧化脲组(n=15)放入中性10%过氧化脲溶液中,过氧化氢组(n=15)放入中性40%过氧化氢溶液中,每天处理6 h,持续处理1周。利用拉曼光谱仪检测3组样本每天的拉曼绝对强度、拉曼相对强度,计算荧光背景强度(拉曼绝对强度与拉曼相对强度的差值),用红外光谱仪记录3组样品每天酰胺峰值的变化趋势。
结果与结论:①3组组内处理1-7 d的拉曼相对强度均未发生明显变化,对照组处理1-7 d的荧光背景强度未发生明显变化,过氧化脲组处理1-7 d的荧光背景强度呈现下降趋势,过氧化氢组处理1-4 d的荧光背景强度显著降低,此后未再发生明显变化;②对照组处理1-7 d的酰胺Ⅰ和酰胺Ⅲ峰值面积未发生明显变化,过氧化脲组、过氧化氢组处理1-7 d的酰胺Ⅰ和酰胺Ⅲ峰值面积均呈下降趋势,并且过氧化氢组下降趋势更明显;③结果表明,牙本质拉曼光谱激光诱导荧光背景强度的改变可能来源于牙本质中的非胶原蛋白成分,并且在美白剂的作用下可能会对牙体组织造成一定不利影响。

https://orcid.org/0009-0001-4086-8686(李锐强)

中国组织工程研究杂志出版内容重点:生物材料;骨生物材料;口腔生物材料;纳米材料;缓释材料;材料相容性;组织工程

关键词: 牙齿漂白, 过氧化氢, 过氧化脲, 牙本质, 拉曼, 红外光谱, 工程化口腔材料

Abstract: BACKGROUND: Hydrogen peroxide-based bleach is widely used in clinical tooth whitening treatment, but its mechanism of action has not been uniformly determined so far.
OBJECTIVE: To examine the effects of two bleaching agents, neutral 10% carbamide peroxide and neutral 40% hydrogen peroxide, on teeth and explore the mechanism of teeth whitening.
METHODS: Forty-five discarded teeth extracted for orthodontic treatment were collected, and the dentin sections were made and polished. After removing the smear layer, they were randomly divided into three groups. The control group (n=15) was placed in deionized water; the carbamide peroxide group (n=15) was placed in a neutral 10% carbamide peroxide solution, and the hydrogen peroxide group (n=15) was placed in a neutral 40% hydrogen peroxide solution. The treatment was continued for 6 hours every day for 1 week. The Raman absolute intensity and Raman relative intensity of the three groups of samples were detected by Raman spectrometer every day, and the fluorescence background intensity (the difference between the Raman absolute intensity and the Raman relative intensity) was calculated. The change trend of the amide peak of the three groups of samples every day was recorded by infrared spectrometer.
RESULTS AND CONCLUSION: (1) The relative Raman intensity of the three groups did not change significantly during the 1-7 days of treatment. The fluorescence background intensity of the control group did not change significantly during the 1-7 days of treatment. The fluorescence background intensity of the carbamide peroxide group showed a downward trend during the 1-7 days of treatment. The fluorescence background intensity of the hydrogen peroxide group decreased significantly during the 1-4 days of treatment and did not change significantly thereafter. (2) The peak areas of amide I and amide III did not change significantly during the 1-7 days of treatment in the control group. The peak areas of amide I and amide III showed a downward trend during the 1-7 days of treatment in the carbamide peroxide group and the hydrogen peroxide group, and the downward trend was more obvious in the hydrogen peroxide group. (3) The results show that the change in the laser-induced fluorescence background intensity of dentin Raman spectroscopy may be derived from the non-collagen components in dentin, and under the action of whitening agents, it may have a certain adverse effect on tooth tissue.

Key words: tooth bleaching, hydrogen peroxide, carbamide peroxide, dentin, Raman, infrared spectroscopy, engineered dental material

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