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Effects of probiotic drop containing Lactobacillus rhamnosus, Bifidobacterium infantis, and Lactobacillus reuteri on salivary Streptococcus mutans and Lactobacillus levels.
Contemporary Clinical Dentistry 2016 October
AIMS: The aim of the present study was to evaluate the effect of a probiotic drop containing Lactobacillus rhamnosus, Bifidobacterium infantis, and Lactobacillus reuteri on salivary counts of Streptococcus mutans (SM) and Lactobacillus (LB) in children 3-6 years of age.
SETTINGS AND DESIGN: Sixty-one healthy children were randomly allocated into two parallel blocks in this double-blind, randomized controlled trial (IRCT2014120320202N1) from May to June 2015.
SUBJECTS AND METHODS: Finally 53 participants consumed five drops of placebo (n = 23) or probiotic (n = 30) every night for 2 weeks. Before intervention and 1 day after completion of the intervention, unstimulated salivary samples were collected, and microbiologic evaluations were carried out.
STATISTICAL ANALYSIS: Data were analyzed with descriptive statistical methods Wilcoxon signed ranks, Mann-Whitney, and logistic regression.
RESULTS: SM level decreased significantly in probiotic group after intervention (P = 0.045), and there were significant differences in salivary SM counts after intervention between two groups (P = 0.04). In probiotic group, LB counts decreased significantly after intervention (P = 0.048); however, there were no significant differences between two groups (P = 0.216).
CONCLUSIONS: Use of this probiotic drop decreased salivary counts of SM; however, LB counts did not change. In addition, use of the drop in children with higher salivary counts appeared to be more effective.
SETTINGS AND DESIGN: Sixty-one healthy children were randomly allocated into two parallel blocks in this double-blind, randomized controlled trial (IRCT2014120320202N1) from May to June 2015.
SUBJECTS AND METHODS: Finally 53 participants consumed five drops of placebo (n = 23) or probiotic (n = 30) every night for 2 weeks. Before intervention and 1 day after completion of the intervention, unstimulated salivary samples were collected, and microbiologic evaluations were carried out.
STATISTICAL ANALYSIS: Data were analyzed with descriptive statistical methods Wilcoxon signed ranks, Mann-Whitney, and logistic regression.
RESULTS: SM level decreased significantly in probiotic group after intervention (P = 0.045), and there were significant differences in salivary SM counts after intervention between two groups (P = 0.04). In probiotic group, LB counts decreased significantly after intervention (P = 0.048); however, there were no significant differences between two groups (P = 0.216).
CONCLUSIONS: Use of this probiotic drop decreased salivary counts of SM; however, LB counts did not change. In addition, use of the drop in children with higher salivary counts appeared to be more effective.
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