The US research team analyzed data from 5,986 adults, with an average age of 63, who had no prior history of stroke. The participants underwent dental checkups and were divided into three groups:
Good oral health (1640 participants).
Periodontal disease only (3151 participants).
Periodontal disease with dental caries (1195 participants).
Over two decades, 4% of healthy participants had a stroke, compared to 7% in the gum disease group and 10% in the gum disease and tooth decay group. After adjusting for factors such as age, body mass index, and smoking, those with both conditions had an 86% higher risk of stroke compared to people with good oral health, while those with gum disease alone had a 44% higher risk.
The study also indicated that people with both problems have a 36% higher risk of serious cardiovascular events, such as heart attacks or fatal heart disease.
Study 2: Gum Disease and Brain Damage
Another study of 1,143 adults, with an average age of 77, looked at damage to the brain's white matter, a marker of small vessel disease linked to dementia.
Participants with gum disease showed greater white matter hyperintensity, representing 2.83% of total brain volume, compared to 2.52% in those without. After adjusting for confounding factors, those with gum disease had a 56% higher risk of falling into the highest-risk group for white matter hyperintensity.
The importance of oral health care
"Taking care of your teeth and gums isn't just about smiling; it may also help protect your brain," said Dr. Souvik Sen, chair of the Department of Neurology at the University of South Carolina.
"People who show signs of gum disease or tooth decay should seek treatment to preserve their teeth and reduce their risk of stroke."
Maintaining oral health includes: brushing your teeth twice a day, flossing, and visiting your dentist regularly.
