【摘要】 目的 :比较不同种类饮料对牙釉质的脱矿作用。方法 :采用微量化学分析法测定饮料在处理牙釉质后 1～ 7d饮料中钙和磷浓度的变化。结果 :实验饮料除矿泉水外对牙釉质都具有脱矿作用 ,导致牙釉质钙和磷的溶出。钙和磷的溶出因饮料的种类而异 ,差异具有显著性 ,P <0 0 0 1。随时间的延长 ,钙和磷的溶出也具有显著性差异 ,P <0 0 0 1。钙和磷在 7d内的总溶出量也因饮料的种类而异 ,差异具有显著性 ,P <0 0 0 1。果汁类的钙和磷总溶出量最高 ,分别为 1 3 5 5 μmol/L± 0 2 5 0 μmol/L和 1 780 μmol/L± 0 2 70 μmol/L ;钙奶最低 ,分别为 0 2 90 μmol/L± 0 0 92 μmol/L和 0 2 3 9μmol/L± 0 0 5 0 μmol/L。结论 :饮料对牙釉质具有脱矿作用 ,脱矿作用的强弱与饮料的种类有关 ,果汁类最强 ,钙奶最弱。更多还原

【Abstract】 Objective:The aim of this study is to investigate the demineralization effects of several beverages on bovine enamel. Methods:The concentration of calcium and phosphate in these beverages were measured by using EL 312e Micro_Plate after the bovine enamel was exposed to beverages for a period of 7 days. Results: The data indicated that almost all of these beverages could cause demineralization of bovine enamel, except mineral water, and the concentration of calcium and phosphate in these beverages changed after the bovine enamel was exposed to beverages. There were great significant differences in demineralization abilities among different beverages (P<0 01). The concentration of calcium and phosphate in beverages also changed with time (P<0 01).Conclusion: All these beverages, except mineral water have erosive effects on bovine enamel. Demineralization degree varied with kinds of beverages. The fruit juice has the highest erosive effect on the enamel, and the calcium milk has the lowest erosive effect on the bovine enamel, when comparing with other beverages.更多还原