When is a root canal required?
Root canal treatment (or endodontics) is required when there is an infection deep within your tooth. The blood or nerve supply may be infected either due to an injury or a severe cavity. You may not experience any pain or discomfort during the early stages of an infection, however if your tooth changes colour and darkens that is a sign that your tooth nerve is in danger of dying. If left untreated, this kind of infection can not only be very painful, but can lead to a tooth abscess or even tooth loss.