Teeth which have deeper cavities will often be more painful; with the pain usually starting on its own and lasting for long spells especially at night. You may also experience pain on biting.
This is usually a sign that the decay or cavity has deepened to involve the nerve chamber (pulp) of the tooth.
The treatment for this kind of advanced tooth decay is either root canal treatment or extraction (removal) of the tooth.
Root canal treatment involves removal of the infected nerves tissue. The canals of the tooth are then cleaned out and shaped to receive an artificial filling (root filling). The whole treatment is usually done it three visits, usually spaced one week apart.
On the last visit, the permanent filling is placed on the tooth.
The symptoms might subside even before the last visit, but the whole treatment must be completed. Endeavour to attend all the visits as recommended by the dentist. After the root canal treatment is completed, there should be no more symptoms associated with the tooth because it is now devoid of all living tissue.
However, because of the nature of the procedure and the initial extent of decay, there is usually a substantial loss of tooth structure.
In addition, root canal treatment removes all the living tissue in the tooth, replacing it with artificial filling. Without the hydrating properties of the pulp contents, the tooth dries out and becomes very BRITTLE and the remaining tooth crown could easily fracture.
The dentist will advise you to have an artificial crown placed on the tooth within six months after root canal is completed
The crown will ensure that the tooth remains intact for many years even after root canal treatment.