Synopsis

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

Neem (Azadirachta indica) has a long history of traditional use in oral hygiene, particularly in Indian and Southeast Asian cultures. Traditionally, neem twigs have been used as natural toothbrushes ("chew sticks") for centuries. The practice is rooted in Ayurveda, where neem is believed to possess antibacterial and anti-inflammatory properties beneficial for maintaining healthy teeth and gums. Several traditional texts mention its use for preventing dental caries, gum disease, and bad breath.

Scientific studies have provided some support for these traditional claims. Research indicates that neem extracts exhibit antimicrobial activity against oral pathogens such as Streptococcus mutans, which are implicated in dental plaque formation and tooth decay. Some small clinical studies have shown that mouthwashes or toothpastes containing neem extract can reduce plaque and gingival inflammation compared to placebo. However, the majority of evidence comes from in vitro (laboratory) studies and small-scale human trials, and there is a lack of large, well-designed clinical trials to firmly establish efficacy.

In summary, while the use of neem for oral health is strongly rooted in tradition and supported by some preliminary scientific findings, more rigorous research is needed for conclusive validation. The evidence thus rates as moderate (3/5), with tradition providing the primary justification for its use in supporting the teeth body system.

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