Results: A statistically significant (p < 0.05) reduction of salivary mutans streptococci was found at immediately after and 1 to 4 weeks post-probiotic milk consumption, while no statistically significant was found in the control group. Between the groups, a statistically significant (p < 0.05) reduction of salivary mutans streptococci was found immediately after and 1 to 4 weeks post-milk consumption between the study and control group. There were no statistically significant changes among the control and study groups in salivary pH and plaque index at all of post-milk consumption periods.