Root Canal Retreatment
is necessary when bacteria have re-entered the tooth. This is usually due
to decay or untreated canal areas. The patient may experience swelling or
pain in chewing.
Sometimes a patient may have no symptoms, but is referred to us by their dentist
because an x-ray shows that there is a problem with a tooth that has previously
undergone root canal therapy.
What Happens During Root Canal Retreatment?
After the tooth is "numbed",
the canal system will be reopened to remove the previous root canal material.
This may involve removing a crown, post and core material. Sometimes we are
able to make a Small hole in the existing restoration and work through that
opening. The canals are then thoroughly cleansed and shaped along their entire
The canals are refilled
with gutta-percha and the opening is sealed with a sterile cotton pellet and
a temporary filling.
The tooth is restored
by your dentist within a couple of weeks. If your existing crown can be saved,
then you will need to have it repaired. If you do not have a crown, it will
probably be recommended.
With time, the bone will
heal where the bacteria was removed.