Endocarditis is a serious inflammation of the heart's inner lining and valves, usually caused by a bacterial infection. While it can affect anyone, people with certain heart conditions or a history of endocarditis are at higher risk. Dental procedures can sometimes trigger endocarditis, especially in high-risk individuals. Bacteria from the mouth can enter the bloodstream during procedures that involve the gums, such as tooth brushing, flossing, or dental treatments. These bacteria can then infect the heart's inner lining and valves, leading to endocarditis. To prevent this, the American Heart Association recommends that high-risk patients take a single dose of antibiotics about an hour before certain dental procedures. However, this is only suggested for those at the highest risk, as the benefits of preventive antibiotics are limited and the risks of antibiotic side effects can outweigh the benefits. Symptoms of endocarditis include fever, chills, fatigue, and heart murmurs. If you experience these symptoms after a dental procedure, especially within two weeks, consult your doctor immediately. Preventive antibiotics significantly reduce the risk but do not eliminate it entirely.