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

研究了酸性电解水（pH 3左右）、碱性电解水（pH 12左右）及其混合水（pH5.00和pH7.00）对人天然牙和牙用合金的影响.人的天然牙齿：浸泡在酸性电解水中的牙釉质表面的颜色即使在一小时后也会变成白色。当长期浸泡在酸性电解水中时，这种变化变得严重。酸性电解水浸泡后釉质表面色差为7.0（NBS单位）。混合水浸泡的牙齿重量变化率低于酸性电解水浸泡的牙齿。在酸性电解水中浸泡长达6小时的样品的纵向研磨截面上，我们可以在大部分表面积上研究较薄的半透明层。随着浸泡时间的延长，半透明层变厚。在接触显微射线照相上，这些层是观察到的X射线透射层。通过电子探针分析，该层中Ca、P、Mg的含量明显高于对照层， ...更多信息 y下降。牙科合金：酸性电解水溶液浸泡后的色差值最大为-16.6，pH值分别为5.00 -11.5、7.00 -10.3、12 -3.0。随着pH值的升高，除银合金颜色变浅外，其余合金颜色均变浅。浸泡在酸性电解水中的该样品的颜色变为白色，并且色差最低-12.5。随着pH值的增加，颜色变黑。当浸入pH7.00时，色差为26.4。在混合水中浸泡的合金的重量变化率低于在酸性电解水中浸泡的合金。特别是金合金在酸性电解水中的失重率很高，为-0.03%至0.09%。静态浸泡试验中各合金的重量变化率均高于动态浸泡试验，因此，在将酸性电解水作为漱口剂送入口腔时，应控制pH值，以避免牙科合金的牙齿脱钙和变色。少

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