Materials and methods. A double-blind randomized crossover study (n = 50) of healthy female adolescents was im-plemented in four stage intervals. The first and third stages were ‘run-in’ and ‘wash-out’ intervals. For the second and fourth stages, two weeks long in duration, the participants consumed 100 grams of Espar or 200 grams of plain yogurt. At the end of each stage, the number of salivary mutans streptococci and the level of calcium content were documented. 

Results. There was a statistically significant decrease in the number of salivary mutans streptococci subsequent to Espar consumption when compared to ordinary yogurt (p < 0.01). Additionally, salivary calcium content increased significantly subsequent to the consumption of Espar and yogurt. However, Espar yielded a higher level of significant increase in sali-vary calcium when compared to plain yogurt (p < 0.01).

Conclusion. This study found that daily consumption of Espar increased the salivary calcium level while decreasing mu-tans streptococci of the saliva.