Loma Linda, California – February 10, 2026 – For many parents, oral hygiene conjures images of cavities, braces, and bedtime lectures about brushing. But a surprising connection exists between a healthy mouth and a healthy heart, especially for children with pre-existing heart conditions.
The Unexpected Link Between Teeth and Tiny Hearts
Protecting a child’s heart can start with a toothbrush, according to cardiologists.
- Untreated dental issues can introduce bacteria into the bloodstream.
- For children with certain heart conditions, this can lead to serious infections.
- Consistent oral hygiene – brushing, flossing, and dental visits – is a key preventative measure.
- Cardiologists may recommend antibiotics before dental procedures for higher-risk patients.
“Everyone has bacteria living in their mouth,” said Nicholas Dreger, MD, a pediatric cardiologist at Loma Linda University Children’s Hospital. “That’s normal. The issue is what happens when those bacteria grow out of control.” Maintaining good oral health is crucial for preventing bacteria from entering the bloodstream and potentially impacting heart health.
Untreated cavities, gum disease, and chronic inflammation create an environment where harmful bacteria thrive. Routine activities like brushing, flossing, or even dental procedures can inadvertently release these bacteria into the bloodstream. Typically, a healthy heart and immune system can easily clear these bacteria without issue.
However, children with specific heart conditions face a heightened risk. In some cases, bacteria traveling through the bloodstream can attach to vulnerable areas of the heart, such as prosthetic valves, surgical patches, or repaired tissue. This can lead to infective endocarditis, a potentially life-threatening infection of the heart’s inner lining.
“It can require weeks of IV antibiotics, long hospital stays, and sometimes even repeat heart surgery,” Dreger said. “It’s not common, but when it happens, it’s very serious.”
Not all children with a history of heart surgery are at equal risk. Pediatric cardiologists routinely identify patients who require extra precautions, particularly those with valve replacements, specific congenital heart defects, or compromised immune systems.
Despite the potential severity, the preventative measures are remarkably straightforward. Regular brushing and flossing, routine dental check-ups, and limiting sugary foods and drinks are all vital components of protecting heart health. Warning signs of dental trouble include tooth pain, gum pain, and frequent bleeding during brushing or flossing – all indicators of inflammation or infection.
For children deemed at higher risk, cardiologists may recommend a course of antibiotics before undergoing major dental procedures, such as extractions, to minimize the chance of bacteria reaching the heart. Dentists typically collaborate with the child’s cardiology team to ensure this step is coordinated effectively.
Dreger emphasized the importance of consistent prevention. “It’s really about doing the little things every day,” he said. “If you take care of oral health consistently, you can avoid much bigger problems later on.”
In other words, safeguarding a child’s heart doesn’t always necessitate a stethoscope; sometimes, it begins with a toothbrush.
