IADR Abstract Archives
Saliva pH Changes After Consumption of Acidic Sugary Drinks
Objectives: Acidic sugary drinks may play a significant role in the saliva pH changes, which in turn affects dissolution of dental hard tissue. The purpose of this study was to evaluate pH changes of saliva after consumption of acidic sugary drinks.
Methods: Three soft drinks (Coca Cola, Minute Maid Lemonade and Mountain Dew) were investigated in this study. Drinks pH values were measured using a pH electrode. Drinks were distributed among 30 healthy adults in 3 drink groups (n = 10). Saliva was collected and pH was measured before and 10 minutes after consumption of each drink in each participant. pH changes were calculated and compared among groups using one-way ANOVA and pair comparisons with Bonferroni correction at a significance level of alpha = 0.05.
Results: The pH values of the drinks and their induced salivary pH changes are summarized in the table. Salivary pH drop was detected in all participants and there was significant difference among all the groups (p < 0.016). The largest pH drop was detected with Coca Cola, which also showed the lowest drink pH. In comparison to Montain Dew, Lemonade resulted in smaller salivary pH change despite its lower drink pH.
Conclusions: Sweet acidic drinks resulted in significant salivary pH drop 10 minutes after consumption. The carbonated cola drink showed the most acidic pH and strongest effect. Consumption of such drinks over a long period of time and continuous sipping may rapidly erode the dental hard tissue.
Methods: Three soft drinks (Coca Cola, Minute Maid Lemonade and Mountain Dew) were investigated in this study. Drinks pH values were measured using a pH electrode. Drinks were distributed among 30 healthy adults in 3 drink groups (n = 10). Saliva was collected and pH was measured before and 10 minutes after consumption of each drink in each participant. pH changes were calculated and compared among groups using one-way ANOVA and pair comparisons with Bonferroni correction at a significance level of alpha = 0.05.
Results: The pH values of the drinks and their induced salivary pH changes are summarized in the table. Salivary pH drop was detected in all participants and there was significant difference among all the groups (p < 0.016). The largest pH drop was detected with Coca Cola, which also showed the lowest drink pH. In comparison to Montain Dew, Lemonade resulted in smaller salivary pH change despite its lower drink pH.
Conclusions: Sweet acidic drinks resulted in significant salivary pH drop 10 minutes after consumption. The carbonated cola drink showed the most acidic pH and strongest effect. Consumption of such drinks over a long period of time and continuous sipping may rapidly erode the dental hard tissue.