Endodontics is a dental treatment used to treat and save teeth that are damaged or infected on the inside, where the dental pulp is located. Dental pulp is a soft tissue that contains nerves, blood vessels and connective tissue, and can be damaged by deep decay, tooth fractures or repeated dental injuries. If the dental pulp becomes infected, it can cause pain, swelling and tooth sensitivity. The goal of endodontics is to remove the damaged pulp and disinfect the inside of the tooth, then seal it and protect it from future infection. During treatment, local anaesthesia is used to ensure patient comfort. Once root canal treatment is completed, the restored tooth can last for many years if good oral hygiene is maintained and regular dental check-ups are carried out. Endodontics is an alternative to tooth extraction and can save teeth that would otherwise be doomed to be extracted.