Children about to brush their teeth. Photo Black To My Roots

Children who refuse to brush their teeth may be putting themselves at risk of heart disease in later life, research suggests.

A study that followed 755 children over 27 years found those with tooth decay or gum disease were more likely to have a build-up of plaque in their arteries as adults, known as atherosclerosis.

This limits the amount of oxygen-rich blood that can reach our organs, raising the risk of a heart attack, stroke or even early death.

Gum disease occurs when bacteria in plaque infects the tissues that support our teeth. Some people’s bodies are thought to over-react to this bacteria by triggering excessive inflammation.

This inflammation may gradually damage blood vessels, leading to atherosclerosis, which can lead to heart disease.

The study was carried out by the University of Helsinki and led by Dr. Pirkko Pussinen, a researcher in the department of oral and maxillofacial diseases.

The link between gum disease and heart conditions in adults is well known, however, how oral health in childhood affects people in later life is poorly understood.

“The observation is novel, since there are no earlier follow-up studies on childhood oral infections and the risk of cardiovascular diseases,” Pussinen said.

To uncover if there is a link between oral and cardiovascular health, the researchers looked at dental reports carried out on children aged six, nine and 12 in 1980.

These revealed 68, 87 and 82 per cent of the youngsters had bleeding gums, tooth decay or fillings, respectively.

Slight periodontal pocketing – when the bone and tissue around the teeth wears down – was found in 54 per cent of the children, particularly the boys.

And 61 and 34 per cent of the youngsters had one-to-three or one-to-four signs of an oral infection, respectability.

Symptoms of an infection can include toothache, temperature sensitivity, swelling in the face or fever.

In fact, only five per cent of the children’s mouths were considered totally healthy. The participants were followed until 2007, when they were 33, 36 and 39, respectively.

As adults, their carotid artery intima-media thickness was measured via an ultrasound scan. This is a marker of atherosclerosis, with values of more than 0.9mm being abnormal, according to the European Society of Cardiology.

Results – published in JAMA Network Open – revealed both caries and periodontal diseases raise a child’s risk of a dangerous carotid artery intima-media thickness in adulthood.

Caries is the scientific term for tooth decay, while periodontal disease describes infections of the structures around the teeth.

“Oral infections were an independent risk factor for subclinical atherosclerosis; and their association with cardiovascular risk factors persevered through the entire follow-up,” the researchers wrote.

“Prevention and treatment of oral infections is important already in childhood.”

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