The pulp of a tooth contains the blood vessels and nerve endings. Trauma and caries may result in the ultimate necrosis of a pulp. This may cause acute pain, persistent dull ache or the process may be silent but result in discolouration of the tooth, pus discharge or swelling. To preserve the tooth and remove the symptoms, the content of the pulp chamber and root canal has to be cleaned, disinfected and then complete obliteration with an inert material, usually gutta percha with a sealant. This procedure is referred to as Root Canal Treatment or Endodontic Treatment.