Periodontal disease mainly includes gingivitis and periodontitis. Gingivitis refers to the inflammation of the gums around the teeth, which can be caused by bacterial infection, external stimuli and food impaction. Generally the most common is mainly bacterial infection, due to poor oral hygiene, plaque attached, in which the bacteria attached to the surface of the teeth of food as a culture medium, rapid reproduction; and bacterial discharge toxins to stimulate inflammation of the gums, gingival papillae and gingival redness, swelling, bleeding. Gingivitis affects aesthetics, if the further development of periodontitis, its main manifestations for alveolar bone resorption, periodontal pocket formation, periodontal pus, loose teeth. Periodontal disease causes gingival recession, root exposure, crown elongation, gap widening, seriously affecting dental aesthetics.