Findings

What do systematic reviews say?

2 questions · 2 findings · 1 reviews · Dental caries

No studies found 0 · 0%GRADE not reported 2 · 100%Very low 0 · 0%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Salivary Streptococcus mutans count and plaque index · Adults with dental caries

No meta-analysis was conducted; postbiotic lozenges were reported to reduce salivary Streptococcus mutans counts and plaque index versus placebo.

1 finding from 1 review

Postbiotics and Dental Caries: A Systematic Review. 2025 All outcomes
4 weeks · clinical setting
no estimate extracted
1 study
GRADE not reported

Reduced dental plaque index · Adults with dental caries

Postbiotic lozenges reduce plaque index in one adult RCT (ungraded).

1 finding from 1 review

Postbiotics and Dental Caries: A Systematic Review. 2025 All outcomes
4 weeks · Clinical; salivary/plaque sampling
One RCT in adults reported a significant reduction in plaque index with postbiotic/heat-killed lozenges versus placebo (Lin 2022); no pooled estimate.
1 study
GRADE not reported