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Chronic Obstructive Pulmonary Disease (COPD) is one of the most common respiratory diseases the 4 th leading cause of death in the world, and it is predicted that by 2020 will be the 3 rd leading cause of death and the 5 th leading cause of overall disability worldwide [1]. COPD is a heterogeneous respiratory disease that includes clinical conditions such as emphysema, chronic bronchitis, small airways disease, and non-reversible asthma [2]. Its prevalence in Europe and North America and is 9% to 10% in adults aged 40 years or older, its increased prevalence has been attributed to increased smoking rates, whereas COPD is impaired by exacerbations possibly due to viral or bacterial infections [3].

Examination of Periodontal Status in Chronic Obstructive Pulmonary Disease Greek Adults: A Case - Control Study