Endodontics is the branch of dentistry dealing with the study and treatment of the space within a tooth, the dental pulp and root canals filled with soft connective tissue containing blood vessels and nerves.
With the penetration of bacteria (caries, deep fillings or dental trauma) into these structures an infection occurs which often causes great pain. Spreading further down the root canals the infection can progress to the bones and manifests itself in the form of granuloma or abscess (swearing).
These cases require endodontic treatment in order to prevent the further spread and progress of the infection which can consequently cause tooth loss.
When the length of the root canal has been estimated with special instruments, apex locators, the cleaning of the endodontic space is performed with a combination of sterilized manual and mechanical instruments. After the treatment, the root canals are filled with biointern materials. Based on the size of a dental crown, an assessment is made whether or not a post should be placed within the root canals.
An endodontically treated tooth is more brittle than a vital tooth and it can bear less load than a vital tooth, but the length of its duration is the same as that of a vital tooth, so it can equally be used as support for a crown or a bridge.
Only in exceptional cases it is impossible to perform a successful endodontic treatment.