Tooth pain after filling, may be caused by dental diseases, such as pulpitis, etc., filling fillings are too high, filling material stimulation, etc., patients need to be diagnosed by the doctor for targeted treatment. 1. Dental diseases: common dental diseases such as pulpitis, gingivitis, etc., pulpitis patients need to re-open the teeth, through root canal therapy, pulpectomy and other ways of treatment, patients also need to take antibiotics, such as metronidazole, ornidazole and other drugs to control the infection and relieve pain. 2. Fillings are too high: the symptoms of tooth pain after filling, may be related to fillings are too high, resulting in pain when patients bite after filling, patients need to go to the regular hospital for dental occlusion correction or re-fillings and so on. 3. Stimulation of filling materials: if the patient before filling teeth with deep caries, fillings directly using silver mercury and other materials, without cushioning, can also lead to irritating pain in the pulp, the patient needs to be re-filled, fillings need to pay attention to the protection of the pulp and so on. In addition, tooth sensitivity, fillings at the injury, gum abscess, etc. may also cause tooth pain, it is recommended that patients seek medical examination in a timely manner to clarify the cause of the disease for targeted treatment. Medications should be used under the guidance of a physician.