A root canal treatment is the most common type of treatment in the field of endodontics. If a root canal therapy is not promising or passed by, a so-called root tip resection is usually undertaken as a consequence.Reasons for such a treatment are inflammatory changes of the pulp tissue, which can be either painless or very painful. The pulp, the interior of the tooth, consists of blood vessels, nerves and lymph vessels, which are removed during root canal treatment. An inflamed pulp (pulpitis) can occur due to various reasons. With deep caries lesions bacteria can infect the pulp, as well as periodontal disease or trauma may be grounds for an inflammatory disease of the tooth.