摘要
目的 :比较几种碳酸类饮料对牙釉质的脱矿作用。方法 :采用紫外 可见分光光度法检测 5种碳酸类饮料中钙、磷含量 ,采用微量化学分析法检测 5种碳酸类饮料处理牛牙釉质后饮料中钙、磷含量的变化。采用维氏显微硬度仪测定经饮料浸泡后牙釉质表面显微硬度的变化。结果 :所选用的碳酸类饮料的钙浓度分别是雪碧为 2 1 1mmol/L ,百事可乐为 3 5 8mmol/L ,非常可乐为 0 0 9mmol/L ,可口可乐为 1 32mmol/L ,冰茶为 0 0 5mmol/L ,饮料中磷的浓度分别是百事可乐为 3 4 6mmol/L ,可口可乐为 3 4 6mmol/L ,非常可乐为 3 87mmol/L ,雪碧和冰茶中不含磷。 5种饮料均能导致牙釉质钙磷溶出和表面显微硬度下降。不同种类碳酸饮料导致牙釉质钙磷溶出的量以及表面显微硬度下降的程度不同 ,差异具有显著性 (P <0 0 5 )。随时间延长 ,钙磷溶出减少 ,表面显微硬度降低的程度减弱。结论 :碳酸类饮料都能导致牙釉质脱矿 ,所选饮料中 。
Objective:To compare the bovine enamel demineralization caused by five kinds of soft drinks Methods:The calcium and phosphate of five drinks were analyzed by UV spectrophotometry,and then the bovine enamel was immersed in soft drinks and the calcium and phosphate in the drinks after immersion of the enamel were analyzed by EL 312e microplate.The enamel surface microhardness was measured by a Leitzs microhardness tester.Results:The level of calcium of Sprite,Baishi Cola,Future Cola,Coca Cola and Ice tea was 2 11,3 58,0 09,1 32 and 0 05 mmol/L respectively.The concentration of phosphate of Sprite,Baishi Cola,Future Cola,Coca Cola and Ice tea was 0,3 46,3 87,3 46 and 0 mmol/L respectively.All the tested drinks had demineralizing effect on bovine enamel and decreased the surface microhardness of bovine enamel.Conclusion:The soft drinks tested may have erosive effect on bovine enamel and Ice tea is the strongest one in demineralization.
出处
《北京口腔医学》
CAS
2004年第3期144-147,共4页
Beijing Journal of Stomatology
