Bleaching of a tooth is caused by oxygen radical-Mechnism of bleaching of a tooth and influence to dentin of super oxygen-

牙齿漂白是由氧自由基引起的-牙齿漂白的机理及超氧对牙本质的影响-

基本信息

批准号：
14571863
负责人：
KAWADA Eiji
金额：
$ 1.86万
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 2004
项目状态：
已结题

项目摘要

An artificial root canal was prepared using the crown of human incisors filled with phosphate buffer solution. This research was to clarify the effects of peroxide on teeth after the tooth-whitener-application. 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.As a result of we used high density hydrogen peroxide water for the humans tooth crown of a tooth part which we gave the artificial root canal which we devised to and bleached it, and having operated it, a large quantity of hydrogen peroxides were measured between root canals. We mean that this passes the enamel that a hydrogen peroxide is a makeup of a tooth, dentin by bleaching operation and seeped.We observe a change of morphology of a minute organization by observation of a percent section of a tooth after bleaching.I recognize some changes, but there is not it in the situation that I can conclude to be it yet. However, a large quantity of dissolution of a dentin ingredient was recognized in immersion of a tooth to the hydrogen peroxide water. A makeup of dentin dissolves by bleaching, and this thing suggests the possibility that, meanwhile, I go through a chance, and a bleach arrives at to a pulp cavity, a root canal.

使用装满磷酸盐缓冲溶液的人口牙的冠制备人造根管。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。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发光来测量在根管内渗透到缓冲液中的过氧化物的数量。由于我们使用高密度的过氧化氢水作为人的牙齿牙齿的牙齿牙齿的牙齿牙齿的牙齿牙齿的牙齿牙齿的牙齿牙齿的牙齿牙齿的牙齿牙齿的牙齿牙齿的牙齿冠额度，并在牙齿的牙齿牙齿的牙齿牙齿的牙齿牙齿的牙齿牙齿的牙齿的牙齿的牙齿的牙齿冠很高很高，我们将其设计为我们，我们将其设计和漂白，并在其上进行了大量的氧化氢量，这是对根管之间的大量量。我们的意思是，这通过了牙釉质，即过氧化氢是牙齿的构成，牙本质是通过漂白操作并渗入牙齿的。我们通过观察漂白后的一个牙齿的百分比来观察一分钟组织的形态变化。然而，在将牙齿浸入过氧化氢水中时，识别出大量牙本质成分的溶解。牙本质的化妆是通过漂白溶解的，这件事表明，与此同时，我经历了机会，漂白剂到达了根管的果肉腔。