While you may think that some loss of teeth is inevitable with aging, it is actually possible for all of your teeth to last a lifetime. One of the ways you can achieve this goal is to avoid periodontal disease (“peri” – around; “odont” – tooth), which is caused by bacteria that attack the tissues around the teeth. Unfortunately, you may not even realize you have gum disease as the signs and symptoms are not always as apparent to you as they are to a dental professional.