Thrush Thrush is an infection caused by a fungus that grows in the mouth. People with diabetes are at risk for thrush because the fungus thrives on high glucose levels in saliva. Medication is available to treat this infection. Good diabetic control, no smoking, and removing and cleaning dentures daily can help prevent thrush. Dry Mouth Dry mouth is often a symptom of undetected diabetes and can cause more than just an uncomfortable feeling in your mouth.
Dry mouth can cause soreness, ulcers, infections, and tooth decay.
The dryness means that you don't have enough saliva, the mouth's natural protective fluid. Saliva helps control the growth of germs that cause tooth decay and other oral infections. Saliva washes away sticky foods that help form plaque and strengthens teeth with minerals. One of the major causes of dry mouth is medication. If you are taking medications, tell your doctor or dentist if your mouth feels dry.