Synopsis

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

Bifidobacteria (unspecified strains) have been investigated for their potential role in supporting oral health, including the prevention and management of gingivitis. Scientific evidence for their effectiveness is emerging but remains limited in both scope and quality. Some small clinical trials and in vitro studies suggest that certain Bifidobacteria strains may inhibit the growth of periodontal pathogens, modulate inflammatory responses, and improve markers of gingival health. For example, a few randomized controlled trials have reported that probiotic lozenges or chewing gums containing Bifidobacteria (often in combination with other probiotic strains like Lactobacillus) may reduce bleeding on probing, plaque scores, and gingival inflammation compared to placebo. However, most studies use mixed probiotic formulations, making it difficult to isolate the effects of Bifidobacteria alone. Systematic reviews indicate that while probiotics show promise as adjuncts to standard periodontal therapy, the evidence is of low to moderate quality, and more rigorous, large-scale studies are needed.

In summary, while there is some preliminary scientific support for the use of Bifidobacteria in managing gingivitis, evidence is not robust or specific enough to warrant strong recommendations. The use is not primarily based on tradition, but rather on emerging scientific interest in oral probiotics. The evidence level is rated as 2 out of 5 based on the current literature.

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