#Periodontitis increases the risk of respiratory disease mortality in older patients

Evidence for an association between periodontitis and respiratory disease in the older patients is limited..

..We found that periodontitis was associated with total respiratory disease mortality. Compared with healthy participants, the hazards ratio and 95% confidence interval for total respiratory disease mortality in patients with severe periodontitis was 2.72(1.04,7.11) after adjusting for relevant confounding variables. With increasing severity of periodontitis, risks for chronic obstructive pulmonary disease (COPD) mortality also increased significantly (P = .038).

Smokers and participants with body mass index (BMI) < 25 kg/m2 were at increased risk. Loss of teeth was not associated with either total respiratory disease or COPD mortality. Although the present study cannot ascertain causal association, it provides substantial evidence that poor periodontal health is associated with respiratory disease in the older patients, particularly in smokers and patients with BMI < 25 kg/m2.

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