Investigation of the effect of breast milk, probiotic supplemented and plain milk formulas on some oral bacteria in infants: an observational and in-vitro study
DOI:
https://doi.org/10.4322/bds.2022.e3099Abstract
Objective: inconclusive evidence exists regarding potential cariogenicity of milk formulas compared to breast milk.
The study aimed to compare Salivary Streptococcus mutans (S. mutans) and lactobacilli detection and counts among
breastfed (B), plain formula (France Lait 1) (FL) and probiotic supplemented formula (Nan 1 optipro) (N) infants
and to assess in-vitro growth of these bacteria in breast milk and milk formula samples. Material and Methods:
salivary samples were obtained using sterile cotton swabs from 60 infants that were grouped according to nursing
milk type. Samples were cultured to obtain the detection frequency and bacterial counts. For the in-vitro investigation,
seven donated breast milk samples and seven freshly prepared samples of both milk formulas were inoculated by
both bacteria and then cultured to assess bacterial growth. Results: lactobacilli were detected in all infants, while
no significant differences were found in S. mutans detection among groups. Counts of both microorganisms in
saliva were lowest in (B) while, insignificant difference was found between (B) and (N). Significant differences
were evident in in-vitro bacterial counts being lowest in (B) followed by (N) and (FL). Conclusion: breast milk and
probiotic supplement infants’ milk formulas may have a protective role against dental caries in infants.
KEYWORDS
Breast milk; Lactobacilli; Milk formula; Probiotics; Streptoccus mutans.
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