摘要
采用钙离子选择性微电极测试并对比分析甲酸、乙酸、丙酸、乳酸和混合酸对牛牙釉质的脱矿率。结果表明：不同酸的脱矿率有显著性差异（Ｐ＜０．０１）；脱矿率随时间的延长而下降；微电极具有检测快速、方便、敏感、准确的优点。提示细菌产酸类型的不同与其致龋力有关；矿物饱和度对脱矿率有重要影响。
The rates of demineralization of 5 organic acids (mathanoic acid, formic acid, propionic acid, Lactic acid, acetic acid,mixed acid) to the bovine enamel were tested and analysed with the selfmade calcium ionselective microelectrodes(Ca 2+ ISME) basing on a neutral carriers of ETH1001.The results showed:①The difference between the rates of demineralization of formic acid and lactic acid,formic acid and propionic acid,formic acid and acetic acid,acetic acid and mixed acid, acetic acid and lactic acid,propionic acid and mixed acid,propionic acid and lactic acid,lactic acid and mixed acid were of great significance (P<0.01);②The rates of demineralization of acetic and mixed acid decreased with time, due to saturation of the solution during demineralization; ③Ca 2+ ISME was of the advantages of simplicity, rapidity, sensitivity and accuracy. The results suggest that the cariogenic potential is related to different acid products of different cariogenic bacteria, and the degree of mineral saturation within solution affects the rate of demineralization.
出处
《华西口腔医学杂志》
CAS
CSCD
北大核心
1998年第2期103-104,113,共3页
West China Journal of Stomatology
基金
中国博士后科学基金
国家自然科学基金
关键词
有机酸
牙釉质
龋齿
脱矿率
\ calcium\ \ ionselective microelectrodes\ \ organic acid
