Deep caries, repeated dental treatments, or trauma to the tooth can lead to inflammation and loss of living tissue inside the root canal. Root canal treatment involves the removal of all microbial debris and products from the decomposition of the pulp (the pulp is the central part of the tooth where the nerves and blood vessels are located), which then fills the empty space with special materials and seals the tooth. there is no way for bacteria to penetrate. This treatment, in addition to reliving pain or possible swelling by preventing the progression of decay and infection, ultimately preserves the surrounding teeth and bones.