Root canal treatment is a dental procedure that involves cleaning and disinfecting the pulp, which is the soft tissue in the centre of the tooth containing nerves and blood vessels. This is necessary when the pulp becomes infected, usually due to tooth decay or a crack. A simple filling is not sufficient to resolve this issue. The process involves removing the infected pulp, cleaning the internal chamber, and then filling it with a special material. After the treatment, the tooth can become more brittle, so a ceramic crown is often placed over it to provide strength and ensure the treatment lasts for a long time.