People often think of diabetes as a disease that mainly affects blood sugar levels. Many are aware that it can damage the heart, kidneys, eyes, and nerves over time.
However, fewer people realize that diabetes can also have a major impact on oral health. A new study from the University of Gothenburg in Sweden provides strong evidence that people with diabetes face a higher risk of gum disease, tooth loss, and problems with dental implants.
The research comes from a doctoral thesis by dentist Anna Trullenque Eriksson. Her work examined the connection between diabetes and oral health using one of the largest datasets ever assembled for this topic.
The study drew information from seven Swedish health registers covering many years and included hundreds of thousands of people. Because the records were so extensive and complete, the researchers were able to gain a much clearer picture of how diabetes affects oral health over the long term.
Diabetes is a condition in which the body has difficulty controlling blood sugar levels. In type 1 diabetes, the body does not produce enough insulin. In type 2 diabetes, the body becomes resistant to insulin or cannot produce enough to meet its needs. Over time, high blood sugar can damage blood vessels and tissues throughout the body.
Researchers have suspected for many years that diabetes and oral health are closely linked. Gum disease, also known as periodontitis, is a chronic infection that damages the tissues and bone supporting the teeth.
If it becomes severe, teeth can loosen and eventually fall out. Previous studies suggested a connection between diabetes and gum disease, but many were relatively small or followed people for only a short time.
The new research offers much stronger evidence. The study found that people with type 1 diabetes who maintained good blood sugar control had oral health outcomes that were much closer to those of people without diabetes. However, individuals with poor blood sugar control faced a significantly higher risk of gum disease and tooth loss.
For people with type 2 diabetes, the picture was even more concerning. The risk of gum disease and tooth loss remained elevated even among those who maintained good blood sugar control. The risk increased further when blood sugar levels were poorly controlled.
The numbers were striking. Among people with type 1 diabetes, about 34% lost at least one tooth during a ten-year period. The risk was much lower among those with good blood sugar control and much higher among those with poor control. In comparison, 29% of people without diabetes lost at least one tooth.
The differences were even greater among people with type 2 diabetes. More than 46% lost at least one tooth over ten years, compared with about 38% among people without diabetes. Those with poorly controlled blood sugar faced the highest risks.
The study also examined dental implants. Dental implants are widely used to replace missing teeth and are generally considered a reliable long-term solution.
However, researchers discovered that people with diabetes were more likely to develop peri-implantitis, an inflammatory disease affecting the tissues around implants. They were also more likely to lose their implants. Once again, poor blood sugar control played an important role.
Another important finding involved social and economic factors. People with diabetes who had lower incomes or lower levels of education faced especially high risks of losing all of their teeth. This finding highlights the fact that health outcomes are often shaped by both medical and social circumstances.
The researchers also found that gum disease may affect more than just the mouth. Periodontitis was linked to a higher risk of diabetes-related eye and kidney complications. This supports the growing view that oral health and overall health are deeply connected.
Scientists believe several biological mechanisms may explain these findings. High blood sugar can weaken the body’s ability to fight infection and may increase inflammation throughout the body. Because gum disease is an inflammatory condition caused by bacteria, diabetes may make it easier for the disease to develop and progress.
The study strengthens the case for closer cooperation between medical and dental professionals. People with diabetes often see doctors regularly to monitor blood sugar, but oral health may receive less attention. The researchers argue that dental care should be considered an important part of diabetes management and prevention strategies.
In reviewing the findings, the study is particularly impressive because of its enormous size and long-term follow-up. The inclusion of more than 86,000 people with type 1 diabetes and more than 786,000 people with type 2 diabetes makes the results highly convincing.
While the research cannot prove that diabetes directly causes every oral health problem, the associations were strong and consistent. The findings suggest that maintaining good blood sugar control, receiving regular dental care, and addressing social inequalities could play important roles in protecting oral health among people with diabetes.
The study also highlights that the mouth should not be viewed separately from the rest of the body. Good oral health appears to be an important part of overall health and healthy aging.
If you care about tooth health, please read studies about an important causes of tooth decay and gum disease, and common tooth disease that may increase risks of dementia.
For more health information, please see recent studies about mouthwash that may increase your tooth damage, and results showing this diet could help treat gum disease.
The research was conducted at the University of Gothenburg.
Source: University of Gothenburg.
