It is not uncommon for a tooth that has been repaired to remain painful, a clinical condition called post-filling pain. For this situation, there are several common aspects: first, the position of the repair is not suitable, the repair is too high will feel the tooth pain when biting, further adjustment and grinding, repair can be. Second, the filling material to the pulp stimulation, sometimes relatively deep filling material may have a certain degree of irritation, will produce stimulation of the pulp, you can apply anti-inflammatory and pain-relieving drugs as appropriate to observe a period of time, if the pain is significantly relieved, no further special treatment is required. Thirdly, the error of pulp judgment itself, pulpitis is considered to be only the presence of deep caries, need to remove the filling material again for root canal treatment, and then for dental filling.