Most people face a difficult time in their lives – having a tooth extracted. Our principle is to keep your teeth as much as possible, but for your overall health, the teeth that should be extracted should still be extracted. The teeth that should be extracted are: 1. teeth with serious periodontal disease, teeth that are very loose and cannot be made stable again even after treatment; 2. teeth with large caries and the bone around the tooth is also destroyed and cannot be filled again; 3. teeth with repeated inflammation and abscess; 4. teeth with obstructed teeth that cause repeated inflammation and swelling; 5. teeth that affect the eruption of normal teeth with multiple teeth and buried teeth; 6. teeth that cause lesions. Such as dental cysts, gingival tumors, etc.; 7, for orthodontic treatment in order to correct uneven teeth, in the orthodontist’s advice need to remove individual teeth.