Evaluation of vital tooth breaching with hydrogen peroxide more than 3O%

评价%20of%20vital%20tooth%20breaching%20with%20氢气%20过氧化物%20more%20than%203O%

基本信息

批准号：
14571862
负责人：
KAWADA Eiji
金额：
$ 1.79万
依托单位：
TOKYO DENTAL COLLEGE
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2003
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14571862/
关键词：
Vital tooth Breaching Hydrogen peroxide Super oxide Hydroxyl radical metal ion Dentin VABSTRACT 歯牙漂白過酸化尿素エナメル質過酸化水素計歯髄

项目摘要

This research was to clarify the effects of peroxide on teeth after the tooth-whitener-application. An artificial root canal was prepared using the crown of human incisors filled with phosphate buffer solution. Tooth-whitener containing 30% hydrogen peroxide or 35% carbamide peroxide was applied according to the instructions with or without acid-etching pretreatment. Luminol-chemi luminescence was used to measure the quantity of peroxide that penetrated into the buffer within the root canal. The penetrated peroxide quantity ranged from 7 μ M to 100.5 μ M. The penetration quantity for the hydrogen peroxide-applied group was about 1.6-fold greater than that for the carbamide-applied group. The penetration quantity for the acid-etching pretreatment group exceeded about 4-fold greater than that of the non-pretreatment group. The whitener containing hydrogen peroxide consists of liquid and powder. Qualitative analysis of powder component of the whitener with EPMA showed that it contained Fe and Cu ions. This finding suggests that whitener affects on the tooth by means of hydrogen peroxide itself or the oxygen radical that generated with Fe or Cu ion. Hence, these findings suggest that the penetration of peroxide from whitener applied to the tooth surface might cause some discomfort after whitening treatment.

这项研究是为了阐明牙齿旋转剂施加后过氧化物对牙齿的影响。使用装满磷酸盐缓冲溶液的人口牙的冠制备人造根管。含有30％过氧化氢或35％过氧化碳酰胺的牙齿旋齿剂根据有或没有酸蚀刻预处理的指示施用。使用Luminol-Chemi发光来测量渗透到根管内缓冲液中的过氧化物的量。渗透的过氧化物量范围为7μm至100.5μm。过氧化氢基团的渗透量比氨基甲酸酯基团高约1.6倍。酸蚀刻预处理组的渗透量超过4倍的渗透量，比非攻击组的渗透量大约4倍。含有过氧化氢的白烯剂由液体和粉末组成。用EPMA对白色粉末成分的定性分析表明，它包含Fe和Cu离子。这一发现表明，通过过氧化氢本身或用Fe或Cu离子产生的氧自由基，白质会影响牙齿。因此，这些发现表明，在美白治疗后，将过氧化物从白色的白蛋白渗透到牙齿表面可能会引起一些不适。