Most teeth it is possible to cure. Occasionally a tooth may not have the ability to save, especially when the canals are not accessible, or when the root is very fragile, or when the tooth does not have sufficient support in the bone or when the tooth itself can not be restored. However Endodontics today, has made progress and is able to save teeth in most cases. At the same time when the endodontic therapy is not effective, endodontic surgery is able to save the tooth