What is known
Periodontitis is associated with several chronic conditions, including diabetes and cardiovascular disease. The relationship with diabetes is considered two-way: poorly controlled diabetes increases periodontal risk, and periodontal inflammation may make blood sugar harder to control.
What is not known
An association does not prove cause. Treating gum disease should not be expected to prevent or cure another medical condition. It is important for its own sake: to protect your teeth and oral comfort.