Your tooth needs a root canal because bacteria has entered the internal hollow portion of the tooth due to a large cavity or crack. The thin hollow chambers will be cleaned with small K3 nickel titanium “pipe cleaners,” washed with sodium hypochorite (bleach) and filled with a warm plastic material called gutta percha. A temporary filling will be placed in the tooth followed by a permanent filling a week after procedure. A crown is recommended for your tooth due to lack of nourishment/oxygen.
There is a 95% success rate with root canal therapy.
Reasons for failure are as follows:
Other canals which were not located may contain dormant bacteria.
The tooth may be cracked too extensively.
The file may fracture in the canal.