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作者利用离子色谱仪对12名青少年的龈上集合菌斑细胞外液有机酸在漱糖前后的种类和含量以及非刺激性唾液有机酸的种类和含量进行了测定。结果表明:在休息状态时,菌斑细胞外液中有机酸含量明显地高于非刺激性唾液中的含量;无论漱糖前后,菌斑细胞外液中高pKa酸(乙、丙酸)的浓度都高于低pKa酸(乳、甲酸)的浓度;漱糖后,菌斑细胞外液中高、低pKa酸的时间依赖性变化与其pH的变化存在相互关系。漱糖后30～35分钟时,龋活跃组与无龋组间,乳酸浓度变化的差异无显著性(P>0.05)。任何时候,菌斑细胞外液中的乙酸浓度都高。提示乙酸与龋损过程之间,可能存在一定关系,值得进一步研究。
The author used ion chromatography to determine the types and contents of organic acids in the adrenal glands of 12 adolescent glands before and after the gargle and the types and contents of organic acids in non-saliva saliva. The results showed that at resting state, the content of organic acids in extracellular fluid of plaque was significantly higher than that in non-stimulated saliva. The concentrations of high pKa acid (B, propionic acid) in plaque extracellular fluid Were higher than the concentration of low pKa acid (milk, formic acid); after oral treatment, the time-dependent changes of high and low pKa acid in the extracellular fluid of plaque had a correlation with the change of pH. There was no significant difference in lactic acid concentration between the active caries group and the caries-free group at 30-35 minutes after the gargle (P> 0.05). At any time, the concentration of acetic acid in the plaque extracellular fluid is high. Tip acetic acid and caries between the process, there may be a certain relationship, it is worth further study.