EVIDENCE TOPIC
A practical integration area where patient setting and baseline risk may matter more than broad population claims.
RELATIONSHIP
CAUSALITY
Context-dependent
INTERVENTION
Oral hygiene interventions may be relevant in selected institutional and high-risk settings
ECONOMICS
Emerging
FROM THE EVIDENCE
Selected findings and guardrails from the research behind this rating. Numbers are shown with their study context rather than treated as universal effects.
INTERVENTION SIGNAL
6.6–11.7%A systematic review of randomized trials in hospitalized older adults and nursing-home residents reported absolute risk reductions in pneumonia or respiratory infection across this range, with NNTs of 8.6–15.3.
J Am Geriatrics Society / PubMed2023 REVIEW
13 studiesA systematic review of onsite professional oral-health programs in long-term care included 10 randomized trials and concluded there was moderate-to-strong evidence for preventing bacterial mouth infection, pneumonia and aspiration pneumonia in that setting.
Canadian Journal of Dental Hygiene / PubMedMORTALITY SIGNAL
RR 0.43A meta-analysis of five randomized trials found dental-personnel oral-care interventions were associated with lower mortality from healthcare-associated pneumonia, while rating the certainty of that evidence as low.
J Am Geriatrics Society / PubMedHOW TO READ THIS PAGE
A strong relationship signal can coexist with uncertain causality or weak intervention evidence. Oral Signal keeps those questions separate so promising science is not turned into a clinical claim the evidence does not support.
This dossier evaluates relationship strength, causal confidence, intervention evidence and economic relevance independently. Ratings reflect the cited source set and should be read as a current evidence summary—not a treatment recommendation or a claim that every population will experience the same effect.
CORE SOURCE SET
This index is editorial analysis, not clinical guidance. Ratings will change as higher-quality evidence becomes available.