Diabetes can cause serious problems in your mouth. You can do something about it.

If you have diabetes, make sure you take care of your mouth. People with diabetes are at risk for mouth infections, especially periodontal (gum) disease. Periodontal disease can damage the gum and bone that hold your teeth in place and may lead to painful chewing problems. Some people with serious gum disease lose their teeth. Periodontal disease may also make it hard to control your blood glucose (blood sugar).
Other problems diabetes can cause are dry mouth and a fungal infection called thrush. Dry mouth happens when you do not have enough saliva—the fluid that keeps your mouth wet. Diabetes may also cause the glucose level in your saliva to increase. Together, these problems may lead to thrush, which causes painful white patches in your mouth.
You can keep your teeth and gums healthy. By controlling your blood glucose, brushing and flossing everyday, and visiting a dentist regularly, you can help prevent periodontal disease. If your diabetes is not under control, you are more likely to develop problems in your mouth.