A dental root canal is the space within the root of a tooth. Part of a naturally occurring space within a tooth consists of the pulp chamber (within the coronal part of the tooth), the main canal(s), nerves and other anatomical structures such as blood vessels are encased within the root canals, and more intricate anatomical branches that may connect the root canals to each other or to the surface of the root.

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This procedure is performed very frequently by the dentist, it is required when the caries lesion reaches the nerve or pulp,or when a tooth breaks; in order to save the tooth and restore it. 

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this procedure can take up to two hours , some times it will need more than one visit. This is a very common procedure , and with the technology that is available right now makes this procedure easier for the patient and the dentist