Root canal therapy refers to the process in which a dentist treats the inner aspects of a tooth (the area inside a tooth that is occupied by its pulp tissue). Primary focus is given on saving the tooth from extraction and maintaining the natural integrity of the dental arch.

Root canals are filled with a highly vascularized, loose connective tissue, the dental pulp. When the pulp (nerve & blood supply) of the tooth is damaged, either by trauma, cavities or cracks in the tooth, they can become infected quite easily by bacteria. Eventually, the bacteria may destroy the pulp.

The inflammation and infection spreads down the root canal, often causing sensitivity to hot or cold foods, throbbing ache or pain when you chew.