Root canal treatment generally has a very high success rate when done to a high standard. Usually, the only other alternative to root canal treatment is the removal of the tooth after which you would be left with a space.
There are certain circumstances under which root canal treatment is not recommended such as if there is not enough tooth structure left to restore following the root canal treatment, if there is not enough bone support for the tooth, or if the root canal system is overly complicated or inaccessible. Referral to a specialist may be recommended, or we may recommend that the tooth is extracted.