How should periodontitis be treated? Periodontitis should be treated early because its prognosis is related to the severity of the lesion. Periodontitis treatment is divided into four stages: the first stage is the basic treatment stage, which aims to remove or control clinical inflammation and bite pathogenic factors, including oral self-cleaning, extraction of teeth with poor prognosis and unfavorable restoration, supragingival scaling, subgingival scraping to remove plaque and tartar, selection of antibacterial drugs to control inflammation, bite jaw adjustment, etc. The second stage is periodontal surgery and fixed loose teeth. The third stage is permanent restorative treatment, usually 2-3 months after surgery, and the fourth stage is review treatment section, once every six months, including plaque control, hygiene education, and radiographic examination, in order to further develop the treatment plan. The key to the success of periodontal treatment is two things: one is the careful treatment plan and the doctor’s meticulous and exquisite treatment, and the other is the patient’s adherence to good self plaque control. The latter is more important than the former, otherwise the doctor’s work will be half-hearted and the disease will reoccur.