Endodontics

The most common reason for pain in the mouth and face is because of cavities in the teeth.  A dental cavity when it is small can be easily filled.  If this is not done or if the filling fails the pulp tissue that is inside the tooth gets infected and the situation is extremely painful.
The only way to manage this situation is to remove the pulp tissue from inside the tooth by trained doctor.  The procedure is called Root Canal Treatment or RCT.
Root canal treated teeth have to be crowned later for aesthetic reasons and to avoid fractures.