Periodontitis is generally not cancerous. Periodontitis is mainly a chronic inflammation that occurs in the periodontal tissues, and does not have the characteristics of cancer. Periodontitis is mainly due to plaque, calculus, occlusal trauma and other factors, resulting in the formation of deep periodontal pockets due to the infringement of important tissues such as gums, periodontal membrane and even alveolar bone. This process is mainly affected by bacterial infection and inflammatory substances, resulting in a variety of uncomfortable symptoms such as swollen and painful gums and overflowing pus, and in some cases, the teeth may become loose and fall off, but there is no risk of cancerous transformation. Cancer is mainly caused by a variety of factors such as cell mutation and viral infection, but the bacteria that cause periodontitis do not have the characteristics of mutation, so periodontitis is not cancerous. Although periodontitis is not cancerous, it may cause symptoms such as swollen and painful gums, loose teeth, etc., which affects oral hygiene, so it is best to go to the hospital for scaling and periodontal treatment in a timely manner.