Root canal therapy may need to be performed when the nerve of a tooth becomes irreversibly affected by decay or infection. A tooth can become abscessed as a result of deep decay, cracks, or trauma to the tooth. This is usually caused by the infiltration of bacteria into the center-most part of the tooth called the pulp. Root canal therapy is the only procedure that can save the tooth. In order to save the tooth, the pulp, bacteria, and any decay are removed and the resulting space is filled with special medicated dental materials. A tooth that has undergone root canal therapy is brittle and must be crowned within a couple of weeks to give the tooth sufficient strength. A crowned tooth is cared for in the same way as other natural teeth by brushing and flossing daily and through regular visits to the dentist.
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