Root canal is a treatment to repair and save a damaged or infected tooth instead of removing the tooth.
Why is it done ?
It is done to remove bacteria from the infected root canal, prevent reinfection and save the natural tooth.
Damaged portion of the tooth and the nerve supply to the tooth ( pulp) is first removed , that area is cleaned and disinfected and a filling material is added to close the entire space and is sealed .
Symptoms that indicate you might need a Root Canal :
Pain at rest and also at night associated with swelling .
Severe pain while biting and chewing
Pimples on the gums
Severe sensitivity to hot/cold that remains even after the stimulus is removed
Feature /trauma to teeth.
Severely worn out teeth ( for restoring their original height)