It is known that the threshold value of enamel mineralsolubility (K, Na, Fe, Mg, Cl, P, Ca, F, C) has significant difference (p < 0.05) after being exposed to folic acid. Meanwhile, Fe did not\ud
have significant difference (p = 0.090) after being exposed to citric acid. Similarly, C did not have significant difference (p = 0.063)after being exposed to bicarbonate acid. Furthermore, it is also known that the threshold time value of dental erosion are on the 105th\ud
day for folic acid, on the 111th day for citric acid, and on the 117th day for bicarbonate acidDental erosion is irreversible and caused by acidic softdrink consumption. Dental erosion prevention already been done, but it still has not been satisfying since the consumption of acidic softdrink is still high. There is still not any dates that explainthe threshold value of enamel mineral solubility and the occurance of dental erosion after consuming acidic softdrink. Purpose: This research aims to find the threshold value of enamel mineral solubility and dental erosion before and after consuming acidic soft drinks.Methods: Subjects of the research are saliva and enamel of 12 marmooths, which have some criteria such as age ???70 days, body weight???600 grams, and teeth considered to be healthy. The sample devided equally into 4 groups. Each of those marmooths was given adrink as much as 2.5 cc/consumption (there are 1, 2 and 3?? per day) by using syringe without injection needle. Salivary minerals thenwere examined by using Atomic Absorption Spectrophotometric (ASS), while dental erosion was examined using Scanning ElectronMicroscop (SEM). The data were analyzed by using Paired t-test. Results: It is known that the threshold value of enamel mineralsolubility (K, Na, Fe, Mg, Cl, P, Ca, F, C) has significant difference (p < 0.05) after being exposed to folic acid. Meanwhile, Fe did not\ud
have significant difference (p = 0.090) after being exposed to citric acid. Similarly, C did not have significant difference (p = 0.063)after being exposed to bicarbonate acid. Furthermore, it is also known that the threshold time value of dental erosion are on the 105th\ud
day for folic acid, on the 111th day for citric acid, and on the 117th day for bicarbonate acid. Conclusion: Threshold value of enamelmineral solubility before and after consuming soft drinks containing acid is different. Based on the threshold value of dental erosion,it is known that folic acid is the most erosive acid
