Most courses of treatment will involve two or more visits to your dentist. At the first appointment, the infected pulp is removed. Any abscesses, which may be present, can also be drained at this time. The root canal is then cleaned and shaped ready for the filling. A temporary filling is put in and the tooth is left to settle.
The tooth is checked at a later visit and when all the infection has cleared, the tooth is permanently filled. As the filled tooth has no pulp it has essentially died, which can lead to tooth discolouration. However, if this does happen, it can easily be aesthetically treated with a dental crown to improve appearance.