Relationship Between Dental Health and Cardiovascular Disease

Mechanisms Linking Oral Health to Cardiovascular Disease

Poor oral hygiene leads to gingivitis and periodontitis, which can cause transient bacteremia during daily activities like brushing teeth, flossing, and chewing, contributing to systemic inflammation 1, 2
Systemic inflammation from frequent, low-grade bacteremias during daily activities may contribute to cardiovascular diseases including atrial fibrillation and heart failure 1, 3

The American Heart Association emphasizes that maintaining optimal oral health through daily activities is more important than antibiotic prophylaxis for dental procedures in reducing infective endocarditis risk 2
The European Society of Cardiology states that good oral hygiene and regular dental review have an essential role in reducing the risk of infective endocarditis 4
Multiple guidelines highlight that poor oral hygiene and periodontal diseases are likely responsible for the majority of infective endocarditis cases that originate in the mouth 3, 5

Use proper flossing techniques daily to reduce plaque buildup and prevent gingivitis 2
Focus on thorough cleaning to reduce plaque buildup and prevent periodontitis 3
Address dental issues promptly to prevent progression of disease and reduce systemic inflammation 3

Patients with prosthetic heart valves, previous infective endocarditis, or certain congenital heart defects should be particularly vigilant about oral hygiene to reduce the risk of infective endocarditis 6, 7
Daily bacteremia from routine activities like tooth brushing occurs far more frequently than bacteremia from dental procedures, making daily oral hygiene more important than antibiotic prophylaxis for preventing infective endocarditis 2
Focusing solely on antibiotic prophylaxis for dental procedures while neglecting daily oral hygiene is a common mistake that may increase cardiovascular risk 3, 2
Delaying treatment of dental issues can lead to more severe oral disease and potentially greater systemic inflammation, increasing the risk of cardiovascular disease 3

Transient bacteremia commonly occurs during routine daily oral activities, with tooth brushing causing bacteremia in 20-68% of instances, flossing in 20-40%, and even chewing food in 7-51% of cases, according to the American College of Cardiology 8
The cumulative exposure to bacteremia from daily activities over time is significantly higher than exposure from occasional dental procedures, with estimates suggesting that tooth brushing twice daily for one year has a 154,000 times greater risk of bacteremia exposure than a single tooth extraction, as reported in Circulation 9
Bacteremia from routine daily activities likely accounts for most cases of infective endocarditis (IE) that originate from oral bacteria, rather than from dental procedures, as stated in Circulation 10

The American College of Cardiology recommends maintaining optimal oral health through regular professional dental care and appropriate daily oral hygiene practices, including the use of manual, powered, or ultrasonic toothbrushes, dental floss, and other plaque-removal devices 11
The American College of Cardiology suggests focusing on thorough cleaning techniques to reduce plaque buildup and prevent gingivitis and periodontitis, although the strength of evidence for this is not specified 11

Patients with prosthetic heart valves, prior IE, or certain congenital heart defects should be particularly vigilant about oral hygiene, according to the American College of Cardiology 11

Overemphasis on bacteremia from dental procedures rather than daily activities may distract from the more important preventive measure of maintaining good oral hygiene, as reported in Circulation 9 and 10