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Root canal treatment involves removing infected tissue from your tooth, cleaning it and then filling it to prevent further damage or infection. Root canal treatment can save a tooth that would otherwise have to be taken out.
The pulp in your tooth can become infected with bacteria if your tooth becomes damaged. This can happen in a number of ways. These include:
severe tooth decay
an injury, such as a blow to your mouth
cracked or loose fillings, or repeated fillings in your tooth
The aim of root canal treatment is to remove the damaged pulp and the bacteria that are causing the infection.