Endodontics is the treatment of infected or potentially infected tissue in the interior part of the tooth, with the aim to establish a root canal filling which is sealed tight against a bacterial recontamination. The tooth needs afterwards to be reconstructed with a full or partial crown to avoid a recolonisation with bacteria and to protect it against fracture. We realize these treatments with the aid of magnifying glasses and mechanical as well as electronic systems to assure a good long term prognosis for the stability of the tooth