Oral Hygiene Key to Heart Health: New Research Links Gum Disease to Cardiac Risk
October 1, 2025
Maintaining good oral hygiene through regular brushing, flossing, and dental checkups is essential, as it helps reduce the risk of heart disease by preventing gum infections and inflammation.
Research shows a strong link between gum inflammation, periodontal disease, and cardiovascular risk, since oral bacteria can enter the bloodstream and contribute to artery blockages.
Analysis of coronary plaque from patients who suffered sudden cardiac death or underwent artery-cleaning surgery revealed bacteria in 66% and 58% of samples, predominantly oral Viridians streptococci.
Researchers in Finland have identified a link between the mouth and gut bacteria, specifically Viridians streptococci, and the development of heart disease, the world's leading cause of death.
Studies have found bacteria in over 40% of plaque samples from individuals who died of heart attacks or had plaque removal surgery, often existing as dormant biofilms within arterial walls that evade immune detection.
These findings suggest that future efforts might focus on developing vaccines targeting bacterial biofilm formation to prevent bacterial-induced thrombosis associated with heart disease.
Vulnerable groups include older adults, people with chronic conditions like diabetes and high blood pressure, smokers, and those with limited access to dental care or lower income levels.
Adopting healthy lifestyle choices such as a balanced diet, quitting smoking, and reducing alcohol intake can further support both oral and cardiovascular health.
When oral bacteria become activated, especially in immunocompromised individuals, they can cause inflammation and blood clots, which may lead to heart attacks by lodging in coronary arteries.
Summary based on 4 sources
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Sources

The Times Of India • Oct 1, 2025
Heart health: Oral bacteria tied to higher risk of clogged arteries
Daily Mirror • Sep 30, 2025
Dentist says mouth symptom could be 'earliest sign' of serious disease