Soreness when biting after filling may be caused by instrument stimulation of pulp reactive pain, with the passage of time, some can be self-healing, if there is a pulpitis, it can not be self-healing need root canal treatment.
1. Pulp reactive pain: after filling the tooth is sore when you bite something, it may be too deep tooth decay close to the pulp, the use of instruments to corrode mechanical stimulation, or filling, chemical stimulation of the filling material will cause the pulp reactive pain, soreness and discomfort.
After observation for the mechanical cause, the symptoms will generally disappear slowly, if the filling material chemical stimulation caused by the need to remove the filling material after the use of medication cushioning, re-filling.
2. Irreducible pulpitis: the filling is sore when you bite something, if it is accompanied by spontaneous tooth pain or severe pain from hot and cold stimulation, if it is judged to be irreducible pulpitis after examination, it cannot be cured by itself, and it needs to be filled after root canal treatment.
After filling the tooth is sore when you bite something, it is recommended to consult a doctor in time to check the targeted treatment.