This procedure can help save a tooth from extraction as it prevents any infection at the centre of the tooth from spreading. Damage to the inner pulp (containing the blood and nerve supply) can occur for a number of reasons including decay, a deep filling or trauma to the tooth.
Any subsequent infection can spread to the root canal and cause a painful abscess or, if left untreated, affect the jawbone.
After treatment, keep this tooth (and all others) clean and be sure to attend regular check-ups so we can check the treated tooth remains infection free.