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The purpose of study was to assess the influence of acidic drinks on the erosion of primary incisor enamel and the effect of fluoridated artificial saliva on the remineralization. Drinks were sampled from the markets in Iksan city, Korea, according to the classification of fruit-vegetable drinks, carbonated drinks, soy milks, and the other drinks. The pH of drinks were measured by pH meter and the erosive potential of acidic´drinks and remineralizing effect of fluoridated (0.05% NaF) artificial saliva were measured by the tooth surface microhardness test. The pH of drinks were, ex( ept the soy milks and- the urong-tea, below the enamel demineralizing point, pH 5.5. Reduction rates of enamel surface hardness by the flavored carbonated drink were 16.90%, 25.11%, 35.10%, and 41.62% after 5, 10, 30, and 60 minutes of demineralization, and recovery rates by remineralizaing solution were 61.52%, 67.96%, 72.13%, and 75.93% after 1, 24, 48, and 72 hours of remineralization, respectively. The results suggest that the most drinks in the markets have the potential to erode the teeth and that remineralization can be achieved by fluoride and saliva but the process is time-consuming and the recovery would not be perfect.
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