Evidence supporting the use of: Lactobacillus salivarius
For the body system: Teeth

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Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Lactobacillus salivarius is a probiotic bacterium that has been studied for its potential benefits in oral health, specifically in supporting teeth and gum health. Several scientific studies have indicated that L. salivarius may help reduce harmful oral bacteria such as Streptococcus mutans, which is a major contributor to dental caries (cavities). Research suggests that supplementation with L. salivarius can help lower the levels of these cariogenic bacteria, thus potentially reducing the risk of tooth decay and improving overall oral hygiene.

In clinical trials, L. salivarius has been shown to decrease plaque formation and reduce inflammation associated with periodontal diseases. For example, randomized controlled trials have reported improvements in gingival indices and reductions in plaque scores among participants using L. salivarius supplements compared to placebo. The proposed mechanisms include competitive inhibition of pathogenic bacteria, production of antimicrobial substances, and modulation of the host's immune response.

While the evidence supporting the use of L. salivarius for dental health is promising, it is not yet definitive. Most studies are relatively small, short-term, and sometimes industry-funded. Meta-analyses and systematic reviews suggest a moderate level of evidence for its benefits in oral health, but emphasize the need for larger, long-term studies. Thus, the current scientific evidence justifies a rating of 3 out of 5 for its support of the teeth body system.

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