Aim: The aim of this literary study is to investigate the incidence and causal factors of periodontitis among individuals ≥50 years of age with coronary heart disease. Method: The method used for this literary study was to search for original scientific articles in the databases CINAHL, DOSS and MEDLINE. Relevant keywords were used for the search in the databases with restriction for the selection with inclusion and exclusion criteria. Original scientific articles were quality reviewed, medium and high quality of the articles were included. Results: The study shows a link between periodontitis and coronary heart disease. The severity of periodontitis affects the onset and progression of coronary heart disease. Factors that affect disease development are the inflammatory process and its biomarkers (interleukins and adiponectin) as well as age and specific periodontal bacteria. Conclusion: The result of this literary study shows a connection between the occurrence of periodontitis and coronary heart disease. Common risk factors for the diseases that has been identified are the inflammatory process, inflammatory biomarkers, age and oral bacteria.