A meatball on the gums can be caused by a number of clinical conditions, and treatment is different depending on the condition. The more common are the following diseases. The first is periapical inflammation of the tooth. In the case of periapical periodontitis, a root canal is performed on the tooth, and when an abscess forms on the gums, an incision is made to drain the abscess. The second disease is periodontal abscess in the advanced stages of periodontitis, which once formed also requires incision and drainage of pus, as well as thorough subgingival scraping, root planing, and rinsing and medication for the periodontitis. The third disease is the appearance of tumors within the jawbone, such as jawbone cysts and enamel cells. The clinical manifestation is mainly a generalized bulging of the gums, which requires X-rays or CT to confirm the diagnosis, and surgical treatment of the jawbone after the diagnosis is confirmed.