Link Between Gum Disease and Heart Health
Research has long indicated a connection between poor gum health and an increased risk of cardiovascular disease. A recent trial now suggests that addressing severe gum disease might slow the narrowing of a primary artery over time in otherwise healthy individuals.
This improvement, likely due to reduced inflammation, could make routine dental care a significant factor in preserving blood vessel health.
Study co-author Dr. Marco Orlandi, a clinical research periodontist at University College London, shared his initial surprise over the findings, noting how overwhelmingly positive the data appeared at first glance.
Approximately 40% of U.S. adults over 30 experience some level of gum disease, known as periodontitis. This ongoing inflammation can lead to serious consequences, including tooth loss and persistent bad breath. As the disease progresses, plaque and bacteria can fill the pockets around teeth that typical brushing or flossing doesn’t reach.
There’s a growing body of research linking periodontitis to various health risks, ranging from Alzheimer’s disease to colon cancer and rheumatoid arthritis. A noteworthy focus is the connection between gum disease and cardiovascular issues, with past studies showing that managing gum disease correlates with improved blood vessel function.
A clinical trial, published in the European Heart Journal on August 19, found that treating periodontitis slows the thickening of the inner layers of carotid arteries in otherwise healthy adults. This thickness is, after all, an important marker for cardiovascular disease risk.
Dr. Orlandi notes that this approach targets inflammation rather than conventional artery health concerns, like cholesterol, which might make its effects noteworthy in the context of cardiovascular disease.
To explore whether treating periodontitis indeed affects carotid artery thickening, Orlandi and his research team conducted a well-structured trial in a central London dental hospital. The randomized trial split participants—some were given intensive gum treatment, while others received standard dental cleaning without deep gum care.
Initially, researchers took ultrasounds of the carotid arteries from 135 individuals with severe periodontitis to gauge baseline thickness and assessed how arteries responded to increased blood flow. They ensured an even distribution of factors like the severity of gum disease and cardiovascular history between both groups.
Participants receiving intensive treatments underwent thorough cleaning and deep procedures to eliminate plaque. Those in the control group received only a basic cleaning.
Over two years, the participants continued to receive care at intervals, and their arteries were re-evaluated at one and two-year marks, alongside several blood tests.
The results showed that individuals who underwent intensive care had less thickness in their carotid arteries compared to the control group. This difference aligns with benefits historically expected from lifestyle changes and some medications, as stated by Dr. Francesco D’Aiuto, another study co-author.
Moreover, treated patients exhibited improved blood vessel function and lower inflammatory and oxidative stress markers, both contributors to artery narrowing known as atherosclerosis.
Overall, while many factors may lead to atherosclerosis, “our findings suggest that untreated periodontitis could be a modifiable risk factor for vascular aging and cardiovascular events,” D’Aiuto explained.
However, there are limitations to this research. The study was conducted in just one location, meaning results could be influenced by local traits or sample characteristics, as noted by Orlandi.
Dr. Maurizio Tonetti pointed out another limitation: all trial participants were otherwise healthy except for their gum disease. Thus, the results don’t necessarily imply that treating gum disease in someone already suffering from atherosclerosis would improve artery health.
Despite these caveats, Tonetti believes the findings shed light on the importance of intensive gum disease treatments in promoting overall health. He emphasized that historically, dentists have focused predominantly on teeth, while physicians have concentrated on body health, inadvertently separating these two crucial areas of wellbeing.
