If you have a heart condition, taking good care of your teeth and gums is important not only for your smile, but for your heart as well. Certain heart conditions and cardiac abnormalities can present risks during dental treatment. During certain dental treatment, even teeth cleaning, bleeding can occur. As a result, bacteria from the mouth can enter the bloodstream and work its way to the heart. The bacteria may cause bacterial endocarditis. Therefore, you may be required to take antibiotic medication before dental treatment to protect your heart and help prevent infection.