The aim of Root canal treatment (or RCT, as commonly called by many) is to remove all the infection from the root canal, sterilize that canal, and fill it with an inert material like gutta-percha to prevent any further infection.
Root canal treatment (RCT) is a highly skilled procedure, but an experienced
Despite best efforts, short and long term RCT failures do occur in 2% of the cases. This is mainly because of the complex anatomical structure of the canals whose exact 3-dimensional view is not visible on x-rays. Sometimes, despite a good RCT, the abscess in the bone simply fails to heal.
Fortunately most of the ‘RCT failures’ can be rectified by re-doing the entire RCT procedure. But in rare cases, ‘re-treatment’ doe not work, and may require surgical interventions like