The immediate effect of carbonated drink on dental enamel microhardness in vitro

目的：研究可口可乐碳酸饮料对离体牙釉质显微硬度的即刻影响。方法收集正畸减数前磨牙20颗,制备釉质样本20颗,随机分为碳酸饮料组和去离子水组,每组10颗牙。碳酸饮料组用可口可乐碳酸饮料浸泡离体牙；去离子水组用去离子水浸泡离体牙,分别在0、1、2、3、4、5、10、20、30min时间点测量牙釉质显微硬度。计算各时间点的显微硬度下降百分比,采用配对t检验进行统计分析。结果碳酸饮料浸泡5min,离体牙釉质显微硬度下降40.09%,与去离子水组相比差异有统计学意义( P<0.01)。结论碳酸饮料可对离体牙釉质产生显著的即刻酸蚀作用。Objective To investigate the immediate erosive effect of Coca-Cola carbonated drink on dental enamel in vitro. Methods Twenty enamel samples were prepared from twenty freshly extracted human premolar teeth for orthodontic purpose. The teeth were randomly divided into two groups of 10. One group was immersed in Coca-Cola carbonated drink. The other group was immersed in water as the placeco group. The microhardness of the enamel samples was measured at 0min, 1 min, 2 min, 3 min, 4 min, 5min, 10 min, 20 min, 30 min. The results were statistically analyzed. Results The microhardness of carbonated drink group was decreased by 40. 09% at 5 min. The difference between the two groups was significant ( P <0. 01 ) . Conclusion Carbonated drink had significant immediate erosive effect on dental enamel in vitro.中国科技核心期刊(ISTIC)06328-33