If the tooth is a bit inflamed and painful after filling, it may be secondary caries, pulpitis and other symptoms, and it is recommended to have another filling, root canal treatment and so on. If the crown is made, a little inflammation pain, generally need to remove the crown, root canal treatment, and then do the crown again. 1. If the tooth is a bit inflamed and painful after filling, it may be secondary caries, pulpitis and other symptoms, and it is recommended to carry out filling and root canal treatment again. 2. If the crown of the tooth, a little inflammation pain, may be the crown of the micro-exudate, generally need to remove the tooth for root canal treatment, and then do the crown again. A few years after the filling of the crown, feel a little inflammation and pain, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.