The root canal is a treatment which involves cutting deep in the tooth when the area is damaged. The therapy is indicated when there is a widespread dental decay or fracture that caused an inflammation or death of the dental pulp. The aim of endodontics is maintaining healthy tooth to be useful for chewing, avoiding having to extract the tooth. The technique involves removing the nerve, clean the root canal and then seal it with a thermoplastic material (gutta percha) and cement or other sealing material. Subsequently, various radiographs are necessary to ensure the accuracy of the result. The term root canal is also used as a synonym for Endodontology, a branch of dentistry that deals with diseases of the dental pulp.