Infection or irreversible inflammation can occur in several ways e.g.
If the pulp in your tooth becomes infected, this can spread to the root canal, and your tooth may become painful. If the infection spreads further, it can cause a tooth or dental abscess, which is a collection of pus. An abscess can be painful and tender when you bite down on your tooth and can cause swelling around your tooth and jaw.
Without treatment, the infection may spread further into your jaw, and you may need to have your tooth taken out. Sometimes your tooth may look darker in colour than your other teeth, which means that the nerve inside your tooth is dead or dying.
Root canal treatment can be carried out in one or more visits to the dentist, depending on the cause of the problem, the tooth, and the severity of the infection.
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“I had to have a root canal and crown. Just the words ‘root canal’ make me flinch, but I can honestly say from the beginning of the process right through to the fitting of the crown was completely and utterly painless. I have never been so relaxed and chilled in the hands of a dentist.”