Periodontal disease is more commonly known as gum disease and was referred to as pyorrhea in the old days. It is a progressive inflammatory disease of the gingival and the surrounding tissue (bone) around the teeth. Periodontal disease is the number one cause of tooth loss after the age of 30 and it is believed that around 80% of the population above the age of 30 may suffer from this disease, with varying degrees of severity. It is usually painless and is mainly caused by plaque although pregnancy, diabetes, epilepsy, and such medications as chemotherapy, medication prescribed for heart problems, birth control pills, and antidepressants can all make you more susceptible to gingivitis which is one of the more common forms of periodontal disease.