Hidden pain after filling, may be caused by tooth sensitivity, gingivitis, filling materials stimulate the nerve cause, judging the pulp state is wrong related, patients can be relieved by general treatment, medication, surgical treatment and other ways to alleviate the condition. 1. Tooth sensitivity: Hidden tooth pain may be caused by tooth sensitivity, patients should pay attention to diet, avoid spicy and stimulating food, do not eat too cold and too hot food, so as not to aggravate the pain, patients can also go to the regular health care institutions, the use of desensitizing agent for tooth coating, to alleviate discomfort caused by tooth sensitivity. 2. Gingivitis: patients with gingivitis can use 1% to 3% hydrogen peroxide rinse, iodine glycerin on the affected area, patients can also use rehabilitation of new liquid, compound chlorhexidine gargle, etc., in order to alleviate the symptoms of toothache. 3. Filling materials stimulate the nerve, determine the state of the pulp is wrong: filling materials after filling, determine the state of the pulp is wrong may stimulate the nerve caused by pain, early patients to maintain observation can be, such as pain aggravation, affecting sleep and normal life, the formation of endodontic inflammation patients need to reopen the tooth to kill the nerve, endodontic treatment, etc., in order to alleviate the pain. It is recommended that patients pay attention to dental care, actively cooperate with the doctor’s treatment, develop good dietary habits, eat less hard food, avoid changes in cold and hot temperatures on the teeth to produce stimulation, and regular follow-up.