Dry mouth, or Xerostomia, results from inadequate flow of saliva. Saliva helps protect against tooth decay by washing away food and other debris and neutralizing acids produced by bacteria in your mouth. Dry mouth is not a disease but a symptom or a medical disorder or a side effect of certain medications. Left untreated, dry mouth increases your risk of gingivitis, tooth decay, and mouth infections. We have options to help restore moisture and maintain the health of your teeth and gums.