Sore teeth may be a sign of dental caries, periodontitis, cryptocleidosis and other diseases. 1. Dental caries: Dental caries is a destructive disease of the hard tissues of the teeth caused by bacteria or improper eating, etc. After the formation of dental caries, the sensitivity to external stimuli will be increased, and the teeth will easily become sore and soft. It can be treated with chloride fossa sealing and inlay restoration in specialized medical institutions. 2. Periodontitis: Bacterial invasion of periodontal tissues will form periodontitis, which may cause tooth soreness in the early stage. Patients can be treated with supragingival scaling or subgingival scraping under medical intervention. 3. Hidden cracks: Due to the long-term effect of certain factors, small cracks will appear on the teeth. When patients eat some too cold, too hot or too hard food, they may experience tooth pain, soreness and tenderness. Patients need to adjust the bite under the guidance of the physician, and in severe cases, root canal treatment or even extraction of the affected tooth is required. If the symptoms of tooth soreness and tenderness persist without relief, it is necessary to consult a doctor in time to find out the cause of the disease and treat it accordingly so as not to delay the condition.