Abstract
Chronic marginal periodontal disease is caused by the damage to the mucous membrane of the gum and the profound structures of the periodontium caused by a chronic inflammatory process. Next, we will present a 46-year-old patient with no known cardiovascular antecedents, presenting to the dentist for the paroprotective solution of the upper arcade, at which the presence of atrial fibrillation and pulmonary thromboembolism.