Loss of Calcium From Enamel Surface After Exposure to Soft Drink (IN VITRO) = Loss of Calcium From Enamel Surface After Exposure to Soft Drink (IN VITRO)

Tooth enamel is the strongest tissue in the human body that forms the outer surface of the teeth. At the beginning of tooth formation, the enamel composition contains more organic matter, in addition to inorganic and water. In inorganic tissues, enamel integrity is more influenced by pH and the presence of minerals in saliva. Critical pH is the pH at which the solution is only half saturated with minerals such as enamel is saturated with saliva at a pH of 5.5-6.5. At this pH, the ionic product (Ip) of minerals is said to equal the product solubility (Ksp), It has been shown that, the surface solubility of enamel and its critical pH are not constant, but there are changes in the solubility of minerals in the enamel with different pH cycles. In individuals with a low ratio of calcium and phosphate in saliva, the critical pH is about 6.5 and in individuals with a high ratio, the pH is around 5.5. In situations where the pH of the solution is lower than the critical pH (Ip < Ksp), whereas when the pH is above the critical pH (Ip > Ksp) Objective: To compare calcium levels before and after consuming soft drinks and also to find out whether there is a relationship between the length of time teeth are exposed to drinks and the demineralization process. Methods: The type of research used in this research is Analytical Experimental Time Series Design. The reason for using this type of research is because apart from being given a lot of treatment, there are a series of observations made on the same variables sequentially from time to time and act as control subjects. Results: The calcium solubility in tooth samples when soaked in soft drinks for 15, 30, and 60 minutes. it shows that tooth enamel calcium dissolves when soaked by using soft drink.