Endodontics is the treatment of pulp inside the tooth (endo means ‘internal’ in Greek), known by the public as the ‘nerve’ and the tissues surrounding the root top. A dental microscope is used for the treatment of root canals. This gives an enlarged, ideally illuminated image to easily see additional micro canals, narrow canal entries, micro cracks, and breaks of the root – things impossible to see with the naked eye. Mechanical instruments are used for cleaning and widening root canals to ensure efficient and fast work, which results in significantly reduced time for the treatment of root canals. In this way the number of patient appointments for root canal treatment is decreased. The Calamus Dual root canal filling device is used for filling canals, so side branches can also be filled together with the main canal.