Evidence supporting the use of: Streptococcus oralis
For the body system: Gums

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Table of Contents

Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Streptococcus oralis is a species of commensal bacteria naturally found in the human oral cavity. Recent scientific interest has focused on the use of specific probiotic strains, including S. oralis, to support oral and gum health. Some in vitro and small-scale clinical studies suggest that S. oralis, as part of multi-strain probiotic formulations, may inhibit the growth of pathogenic bacteria implicated in periodontal diseases, such as Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans. The proposed mechanism is competitive exclusion, where beneficial commensals colonize oral surfaces, reducing the opportunity for pathogens to establish and induce inflammation.

However, direct clinical evidence for S. oralis alone in improving gum health or preventing periodontal disease is limited. Most studies to date are either laboratory-based or combine S. oralis with other probiotic species (e.g., Streptococcus salivarius, Lactobacillus reuteri). While these combinations have shown some promise in reducing markers of gingival inflammation and improving clinical parameters such as bleeding on probing, the specific contribution of S. oralis remains unclear.

In summary, there is a modest but growing body of scientific evidence suggesting S. oralis may play a beneficial role in supporting gum health as part of the oral microbiome or in probiotic formulations. However, the evidence is not yet robust or conclusive, and further well-designed clinical trials are needed to establish its efficacy as a standalone intervention for gum health.

More about Streptococcus oralis
More about Gums

Other body systems supported by Streptococcus oralis

Gums
Teeth

Products containing Streptococcus oralis

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