Periodontal disease is an ongoing inflammation caused by bacteria that live in plaque. Plaque is the sticky, colorless film that forms constantly on the teeth and tissues in the mouth. The bacteria in plaque irritate the gums, making them red, tender and likely to bleed. This condition is called gingivitis (jin-ja-VY-tis), and it can lead to more serious types of periodontal disease.
Gingivitis can be reversed if you remove plaque before it builds up. You can do this by brushing twice a day, flossing daily and having your teeth cleaned regularly in the dental office.
If you do not get rid of gingivitis, it can turn into periodontitis (perry-o-don-TIE-tis), an infection in the spaces between the teeth and gums and around the teeth. Periodontitis is usually not painful. Even so, it can damage the attachment of the gums and bone to the teeth. It can even lead to bone loss. If the disease is not treated at this stage, your teeth may become loose, fall out or require removal by a dentist.