Synopsis

Source of validity: Traditional
Rating (out of 5): 1

Scallion (Allium fistulosum), also known as green onion or spring onion, has been used in traditional medicine systems—particularly in East Asia—for a variety of ailments, including dental and oral health. In traditional Chinese medicine (TCM), scallion is believed to have anti-inflammatory and antimicrobial properties, which are thought to be beneficial for conditions like gingivitis. Historical records and herbal compendia sometimes mention scallion as an ingredient in poultices or mouth rinses for gum inflammation and oral infections, although it is not a primary herb for dental care. However, scientific validation for the use of scallion specifically in the treatment or prevention of gingivitis is extremely limited. While there is some laboratory evidence that compounds found in Allium species (such as allicin in garlic and related sulfur compounds) can have mild antimicrobial effects, there are no robust clinical studies or trials directly assessing the efficacy of scallion in treating gingivitis in humans. Most of the available evidence remains anecdotal or based on traditional use rather than rigorous scientific investigation. In summary, scallion’s use for gingivitis is justified primarily by tradition, with little direct scientific support. Its rating is therefore low in terms of evidence, but historical use persists in some folk medicine practices.

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