PMID:
Clin Oral Investig. 2019 Dec 14. Epub 2019 Dec 14. PMID: 31838596
Abstract Title:
Reduction of Streptococcus mutans by probiotic milk: a multicenter randomized controlled trial.
Abstract:
OBJECTIVE: To investigate the effects of probiotics, Lactobacillus paracasei SD1, on the quantities of Streptococcus mutans in saliva and plaque samples of preschool children.DESIGN: This randomized trial recruited 487 preschool children from eight childcare centers. Participants were assigned to receive a 6-month course of placebo milk daily (group I), probiotic milk either daily (group II) or three days a week (triweekly, group III). The absolute quantities of S. mutans and total lactobacilli in the saliva and plaque samples at baseline (T0), after intervention (T6), and 6 months after discontinuation (T12) were assessed by qPCR.RESULTS: Of 487 children, 354 completed all follow-up periods. However, only 268 children (3.2± 0.8 years old; groups I = 86, II = 89, and III = 93) provided adequate saliva for qPCR. Whereas the quantities of S. mutans were significantly decreased in groups II and III compared to group I in the saliva and plaque samples at T6 and T12, those of total lactobacilli were significantly increased (p