Chronic gingivitis is the most common form of gum disease. It is mainly caused by local irritants, such as plaque, tartar, food impaction and poor restorations. The disease is extremely prevalent and occurs in almost everyone to varying degrees and extent during their lifetime. The main treatment is oral scaling and periodontal rinsing with medication. It is recommended to clean the teeth once every six months or once a year, and to pay attention to brushing the teeth during the day, and the BASS brushing method is recommended.