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Effects of acidic electrolyzed water, alkaline water and their mixed water to

酸性电解水、碱性水及其混合水的作用

基本信息

批准号：
17592050
负责人：
AOKI Harumi
金额：
$ 1.15万
依托单位：
The Nippon Dental University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2006
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17592050/
关键词：
acidic electrolyzed water alkaline electrolyzed water mixed water natural human teeth dental alloy Color difference weight change pH 重量変化率残留塩素濃度酸性水アルカリ水ヒト天然歯縦断研磨標本マイクロラジオグラフ脱灰像 EPMA

项目摘要

We investigated effects of acidic electrolyzed water(about pH3), alkaline electrolyzed water(about pH12) and their mixed water(pH5.00 and pH7.00) to natural human teeth and dental alloys.1. Natural human teeth : Color of enamel surface immersed in acidic electrolyzed water turned white even after one hour. As term immersed in acidic electrolyzed water, this change became severe. Color differences of enamel surface which were immersed in acidic electrolyzed water was 7.0(NBS unit). Rate of weight change of human teeth immersed in mixed water was lower than immersed in acidic electrolyzed water. On longitudinal grinding section of sample immersed in acidic electrolyzed water up to six hours, we could investigate thinner translucent layer at the most surface area. Translucent layer became thicker as immersion period longer. On contact microradiograph, these layers were observed X-ray transmitted layers. By electron micro-probe analysis, Ca, P, Mg concentrations of this layer ware obviousl … More y decreased.2. Dental alloys : Color differences of dental alloys which were immersed in acidic electrolyzed water were highest-16.6, and pH5.00-11.5, pH7.00-10.3, pH12-3.0. As pH value was increased, alloy color became lighter except one of silver alloy. The color of this sample immersed in acidic electrolyzed water turned white, and color difference was lowest-12.5. As pH value was increased, that color changed black. Color difference when immersed into pH7.00 was 26.4. Rate of weight change of alloys immersed in mixed water was lower than those immersed in acidic electrolyzed water. Especially, rate of weight change gold alloys immersed in acidic electrolyzed water was very high, that was -0.03〜-0.09%. Rate of weight change of all alloys by static immersion test was higher than that of dynamic immersion test.As above, when we treat acidic electrolyzed water into our oral as gargling agent, pH should be controlled in order to avoid teeth decalcification and discoloration of dental alloys. Less

研究了酸性电解水(pH3左右)、碱性电解水(pH12左右)及其混合水(pH5.00和pH7.00)对人天然牙齿和牙科合金的影响。 1．天然人牙：在酸性电解水中浸泡1小时后，牙釉质表面颜色变白。当术语浸入酸性电解水中时，这种变化变得更加严重。酸性电解水中浸泡的釉质表面色差为7.0(NBS单位)。人类牙齿浸泡在混合水中的重量变化率低于浸泡在酸性电解水中的重量变化率。在将样品浸入酸性电解水中长达六个小时的纵向研磨部分上，我们可以在最大表面积处观察到更薄的半透明层。浸泡时间越长，半透明层越厚。在接触显微射线照相上，观察到这些层是X射线透射层。经电子显微探针分析，该层Ca、P、Mg浓度明显下降。2．牙科合金：浸泡在酸性电解水中的牙科合金的色差最高为16.6，pH5.00-11.5，pH7.00-10.3，pH12-3.0。随着pH值的增加，除银合金外，合金颜色变浅。该样品浸泡在酸性电解水中颜色变白，色差最低为12.5。随着pH值的增加，颜色变成黑色。浸入pH7.00时的色差为26.4。混合水中的合金重量变化率低于酸性电解水中的合金重量变化率。特别是金合金在酸性电解水中的重量变化率非常高，为-0.03〜-0.09%。静态浸泡试验中所有合金的重量变化率均高于动态浸泡试验。如上所述，当我们将酸性电解水作为漱口剂进入口腔时，应控制pH值，以免牙齿脱钙和牙科合金变色。较少的