The main reasons for frequent inflammation of teeth are as follows: first, suffering from chronic periapical inflammation, chronic periapical inflammation is mostly due to the pulpitis caused by caries is not treated in time, the inflammation spreads down the apical hole to the periapical tissue, making the root tip appear granuloma, abscess, cyst, when the tooth will have a long-term discomfort of biting, once in the organism resistance decreases, the apical area will appear abscess. Secondly, suffering from chronic periodontitis, periodontitis is mostly due to poor oral hygiene, excessive tartar and plaque accumulation on the teeth, resulting in inflammation of periodontal tissues. The main symptoms are red and swollen gums, bleeding, with deep periodontal pockets and alveolar bone atrophy. When the organism has a cold, fever, or fire, periodontal inflammation will increase, and even periodontal abscesses will appear. Third, with wisdom tooth pericoronitis, inflammation of the soft tissue around the blocked tooth can lead to a series of conditions such as restricted mouth opening, pain and swelling.