Association between periodontal disease and chronic obstructive pulmonary disease: a reality or just a dogma?

Background: In the past few years, the association between chronic obstructive pulmonary disease (COPD) and periodontal disease has been promulgated. The present study is aimed at determining the association between these two diseases.

Methods: This observational study includes 501 individuals consisting of 102 patients (case group) having COPD and 399 individuals as controls.