Introduction:Probiotic beverage with Lactobacillus casei shirota strain is one of the probiotic beverages that is com-monly consumed by people due to the fact that it provides benefits for digestive health including oral health. One of the factors affecting oral health is salivary volume. The purpose of this study was to determine the difference of sali-vary volume before and after consuming a probiotic beverage with Lactobacillus casei shirota strain. Methods: The design of this study was quasi-experimental. This study has been conducted to 30 students of the Dentistry Faculty of Padjadjaran University, young adults, ages 18-23 y.o with healthy condition. Each sample was asked to spit saliva on a beaker glass before and after consuming the probiotic beverage with Lactobacillus casei shirota strain. The results were analyzed with paired t-test. Results: The results of this study showed that the mean of salivary volume before consuming a probiotic beverage with Lactobacillus casei shirota strain was 4,58 ml and the mean salivary volume after consuming a probiotic beverage with Lactobacillus casei shirota strain was 8,02 ml. The result of paired t-test showed that there was a significant difference between salivary volume before and after consumption of a probiotic beverage with Lactobacillus casei shirota strain (p <0,05). Conclusion: The conclusion of this study was the salivary volume after consuming probiotic beverage with Lactobacillus casei shirota strain was higher than before consuming probiotic beverage with Lactobacillus casei shirota strain.