Periodontitis is a condition that involves pain symptoms. It is an inflammation of the periodontal support tissues, including gingivitis and inflammation of the alveolar bone. In the early stages of periodontitis, the gum tissue is swollen and congested, leading to bleeding when eating or brushing teeth. This is mainly caused by irritants around the teeth such as tartar and dental plaque. This condition can be improved by dental cleaning, during which there might be minor discomfort. In the advanced stages of periodontitis, there is resorption of the alveolar bone, which may be surrounded by inflammation, also causing pain. Timely dental cleaning and manual scaling followed by guided regeneration of the alveolar bone are necessary. With timely treatment, the pain symptoms can be controlled.