Whether tooth extraction is needed for periodontitis depends on the severity of the inflammation. If the periodontitis is not severe, with no absorption of the alveolar bone, and there is only simple inflammation of the gums, it typically manifests as gum bleeding or bleeding when brushing teeth. There can be dental soft plaque around the gums, or dental plaque irritates and causes the gums to become red, swollen, and pus may ooze. In this case, scaling can be done to remove local irritants, followed by rinsing and medicating around the teeth. This can effectively control the progression of periodontitis and does not require tooth extraction. However, if it causes absorption of the alveolar bone and significant loosening of the teeth, tooth extraction may be necessary.