A root canal is the normal dental caries within the center of the tooth which is filled with the soft pulp tissue and sensory nerves. When this root pulp is contaminated or swollen, the root canal treatment is suggested. This therapy conserves the tooth from extraction and avoid the infection from spreading to the healthy and balanced cells around the contaminated tooth, that may sometimes result in development of an abscess. Neglecting the infected tooth can spread out the swelling to the face, neck or head. It additionally influences the bone tissue around the root tip.