Scaling can treat periodontitis. Because periodontitis is a chronic inflammation caused by bacteria, and scaling is medically called supragingival scaling, the purpose of scaling is to clean the dental surface of calculus and food debris. Because calculus and food debris are bacteria, a large number of bacteria are attached to them, and the products of bacteria produce toxins, which can cause great damage to periodontal tissues and lead to periodontal disease, caused by the plaque attached to the teeth. Scaling is to remove the calculus. After removing the calculus, the plaque will naturally be removed along with the calculus, and the bacteria will also be removed, and the irritation to the gums will be significantly reduced. At this time, no medication or other treatment is needed, and the symptoms of bleeding gums and periodontitis will gradually subside. This is the first step in periodontal treatment and is an essential step in the process of periodontitis treatment. This is why scaling is so necessary and is a very important part of oral maintenance, as well as a very important part of ensuring oral health. Scaling is recommended once every six months to once a year, which is very beneficial to the improvement of the overall oral hygiene and the overall oral health.