Evidence supporting the use of: Gum (unspecified)
For the health condition: Halitosis

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Synopsis

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

Chewing gum is commonly used to manage halitosis (bad breath), and its effectiveness is supported by scientific evidence, although it is not a cure for underlying causes. Several studies have shown that chewing gum, particularly sugar-free varieties, increases salivary flow, which helps mechanically remove food debris and bacteria from the oral cavity. Increased saliva production also dilutes and washes away volatile sulfur compounds (VSCs), the primary contributors to oral malodor. Some gums contain additional antimicrobial agents such as xylitol, which has been shown to inhibit the growth of bacteria responsible for halitosis, further enhancing their effect.

Randomized controlled trials have demonstrated that chewing sugar-free gum for a few minutes after meals can temporarily reduce VSC levels and improve self-perceived breath odor. However, the effect is generally transient, lasting only as long as the gum is being chewed or shortly thereafter. The American Dental Association and other professional organizations recognize gum chewing as a useful adjunct for managing oral malodor, particularly when regular oral hygiene practices are also followed.

In summary, the use of gum for halitosis is scientifically validated as a symptomatic treatment, primarily through its stimulation of saliva and mechanical cleaning action. However, it does not address persistent or pathological causes of halitosis, such as periodontal disease or systemic conditions. The evidence supporting its use is moderate (rated 3/5), reflecting its effectiveness for temporary relief rather than as a definitive treatment.

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