In the Republic of Uzbekistan, an online survey was conducted among various age groups in order to determine the most frequently consumed drinks (240 respondents). The pH values of 26 drinks were measured using litmus tests and a pH meter. The drinks were determined based on these pH values and distributed into groups of liquids according to their erosion potential. Five drinks - pineapple juice, lemon juice, red wine, white wine and green tea - were used in the enamel resistance test (ERT). The most aggressive liquid for the hard tissues of the teeth was determined. The results of the experiment showed that the drink that has the most aggressive effect on the hard tissues of the tooth is lemon juice, which reduces the resistance of enamel to caries by 3.33 times within three days. Keywords: acidity of beverages, hard tooth tissues, caries resistance Erosion of hard tooth tissues is a gradual loss of enamel and dentin as a result of acid dissolution. The prevalence of dental erosion is high and is steadily increasing among the population [3]. A recent study conducted in Israel [4] showed that the prevalence of erosion is 36.6% in the 15-18 age group and 61.9% in the 55-60 age group. One of the main factors contributing to the occurrence of erosions is the frequent consumption of low-pH beverages; consumption of low-pH soft drinks continues to grow, and knowledge of their erosive potential is important for dietary and dental counseling. The drinks consumed contain various acids, including carbonic acid, organic acids from fruits, tartaric acid, citric acid, malic acid and tartaric acid [1-3]. In recent years, diets using low-pH foods and beverages (such as lemon and vinegar diets) have become increasingly popular, but not everyone is aware of their harmful effects. More and more people use sweet carbonated or non-carbonated drinks instead of plain water to quench their thirst, which also (but not exclusively) negatively affects the condition of the hard tissues of the teeth.
