While our teeth are meant to last a lifetime, damage occurs to a tooth sometimes (mostly due to deep cavity or injury causing tooth to crack) infecting the inside of the tooth. The infection can damage the pulp of the tooth – the network of blood vessels and nerves inside. The damaged pulp can result in infection damaging the bone around the tooth, causing swelling and pain, if left untreated. In the case of an infection in damaged tooth, endodontic treatment (also known as Root Canal Therapy) has to be performed by your dentist or dental specialist called Endodontist to save the tooth. 

Depending on the infection of the injured tooth, the Endodontist may put you on medicine before beginning the work. The Endodontist will start by getting the tooth ready, and the treatment involves opening of the tooth, removal of damaged pulp, cleaning, shaping, filling and is finished off by sealing the tooth.