Synopsis

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

Tannins, a diverse group of polyphenolic compounds commonly found in many plants, have a long history of traditional use for oral and gum health. Historically, various cultures have used tannin-rich plant extracts—such as those from oak bark, witch hazel, green tea, and certain barks and leaves—for their astringent properties. The astringency of tannins causes tissues to contract and can help reduce bleeding, inflammation, and swelling in the gums. Traditional remedies often involved rinsing the mouth or applying poultices made from tannin-containing plants to help manage gum irritation, minor bleeding, and mouth ulcers. While some laboratory and animal studies suggest tannins may have antimicrobial and anti-inflammatory effects that could theoretically benefit gum health, there is limited high-quality clinical evidence in humans directly supporting their efficacy for gum conditions such as gingivitis or periodontitis. Thus, the use of tannins for supporting gum health is primarily based on traditional practices and empirical observations rather than robust scientific validation. Nonetheless, their longstanding use for minor oral ailments is well documented in herbal medicine literature.

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