The common symptoms of periodontitis and gingivitis are redness, swelling and tenderness of the gums. Gingivitis and periodontitis are two clinical stages in the progressive development of periodontal disease from mild to severe. At the beginning is the stage of gingivitis, when the main manifestation is only the redness and flaccidity of the gums and bleeding, this bleeding is often manifested as bleeding under stimulation, which is more common in clinical practice, such as bleeding from brushing teeth and bleeding from biting hard objects. However, once gingivitis has progressed further, it can be completely normalized. However, once the gingivitis has progressed further and there is a loss of attachment, periodontitis is formed. In addition to the symptoms of red, swollen and flaccid gums, periodontitis results in gum atrophy and the resorption of alveolar bone, resulting in the loosening and loss of teeth. The major difference between periodontitis and gingivitis is that once periodontitis starts, the process is irreversible and periodontal treatment can only control periodontitis, but it is difficult to create a new good attachment between the gums and the tooth surface.