Endodontic treatment is performed when there is inflammation of the dental pulp (pulpitis) or the infection has involved the tissues around the root canals (periodontitis). The treatment is consisting of mechanical and chemical cleaning and shaping of the root canals offer witch they are filled with biologically tolerable materials. Monitoring the condition of teeth with previously passed endodontic treatment is done by appointing radiographic images in certain period of time- 6 months, 1 year etc.