If you experience this severe pain and then it starts to subside, this means the infection is spreading into your face and jaws. Generally it spreads into the bone. In order to save the tooth and remove severe pain a root canal treatment is necessary.
A tooth has three layers enamel, dentin and pulp. When the cavity is deep and infection has reached the pulp, Root Canal Treatment has to be done. In Root canal treatment all the infection from the tooth is removed and all the canals in the root are cleaned and medicament is placed. The tooth is sealed so that no infection seeps in after Root Canal Treatment.
After performing Root Canal Treatment, the tooth becomes weak and brittle. That's why post Root Canal Treatment crown is very important to protect the tooth.
