Periodontitis, especially late severe periodontitis, cannot be treated all at once, but must go through basic treatment, requiring supragingival scaling, subgingival scaling, the basic cost of scaling generally ranges from a few hundred dollars, subgingival scaling is also required in 4-5 times, each treatment costs about 600 yuan. However, it is difficult to achieve good results with just basic treatment, and surgical treatment is needed after a period of observation. The cost of surgical treatment varies depending on the items and methods used, and generally costs more than $3000 for comprehensive treatment, not including the cost of orthodontics and veneers.