Why is it called a root canal?
The visible part of your tooth, above the gumline is called the ‘crown’. Below the gum, fixing the tooth to the jaw, is the ‘root’ of your tooth. The root canal system is a network that fills a central hollow area inside the tooth and down to the roots. Root canals are filled with loose connective tissue called ‘dental pulp’ and they are responsible for nourishing and hydrating the tooth, as well as reacting to hot and and cold.
When an infection takes hold, it is this pulp which becomes inflamed, which is why it may be painful to eat or drink. Eventually a bacterial infection will cause the pulp to die. It is important to see your dentist if you are experiencing toothache, as the infection will not go away of its own accord and antibiotics cannot be used to treat a root canal infection.
If left untreated, a deep infection can spread through the whole root canal system of your tooth. In this case, the pain may subside, as the infection will have removed all of the pulp.