L. reuteri on salivary mutans streptococci

A prospective, randomised placebo-controlled study aiming to evaluate the effect of xylitol and probitics on salivary bacilli.

80 healthy young adults aged 21-24 years of age were included and divided into 4 groups (4x20). The study products were: One probiotic chewing gum containing 2 x 10⁸ CFU of Lactobacillus reuteri Prodentis (ATCC 55730 + ATCC PTA 5289) per piece three times daily (Group A); 2 pieces of xylitol chewing gum three times daily (Group B); 2 xylitol gums in the morning + 2 probiotic chewing gums mid-day +2 xylitol chewing gums in the evening (Group C) and; 3 placebo chewing gums per day. Dosing continued for three weeks and salivary samples for Streptococcus mutans and lactobacilli assessment were collected on day 0 before treatment start and again after three weeks.

There were no differences between the groups before and after treatment regarding lactobacilli load. For Groups C and D there were no changes in strep mutans score before and after treatment. However, the strep mutans score was significantly improved in both Group A and B.

Conclusion: The results suggest that a three-week consumption of either 3 L. reuteri Prodentis chewing gums or 6 xylitol chewing gums can reduce the load of mutans streptococci.

Reference

Effect of chewing gums containing xylitol or probiotic bacteria on salivary mutans streptococci and lactobacilli. Çaglar E, Kavaloglu SC, Kuscu OO, Sandalli N, Holgerson PL, Twetman S. (2007) Clin Oral Invest. 11:425-429.