What are the possible complications?

The majority of root canal treatments are completed successfully and without complication. However, there are a few rare situations that can arise during the procedure. For example, in complicated cases, a piece of the instrument used to clean the canal may accidentally break off, particularly when the canal is very tight or very curved. In such cases, the instrument may have to be removed or relocated in order to properly disinfect and seal the canal in spite of its presence; this does not usually diminish the success of the treatment. We do our utmost to preserve the crowns of the teeth we treat if they are adequate, but occasionally the porcelain of a crown fractures and cannot be repaired. In such cases, your dentist will have to replace it.