Periodontal disease is a progressive condition which begins with mild gum inflammation called gingivitis. It is the leading cause of tooth loss in adults living in the developed world, and should be taken very seriously. Periodontal disease (often called gum disease) is typically signified by red, swollen, painful, or bleeding gums, but in some cases has no noticeable symptoms.
Periodontal disease generally begins when the bacteria living in plaque cause an infection in the surrounding tissues of the teeth, causing them to become irritated and painful. Eventually, this infection will; cause the jawbone to recede and the tooth to become loose.