No meta-analysis was conducted; the reduction in salivary Streptococcus mutans count versus fluoride toothpaste was reported as insignificant.
Postbiotics increase salivary IgA (immune modulation) in human trials (ungraded narrative synthesis).
Postbiotic toothpaste raises salivary pH in one pediatric RCT (ungraded).
No meta-analysis was conducted; postbiotic toothpaste was reported to increase salivary immunoglobulin A and pH versus fluoride toothpaste.
Postbiotic products reduce salivary S. mutans counts in human trials, though not always significantly (ungraded narrative synthesis).
Adjuvant postbiotics after dental filling improve caries prognosis by restoring the oral microbiota in one RCT (ungraded).
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