A Root Canal is a treatment used to repair and/or save a tooth that is decayed or infected. Without proper treatment, the tissue/gums surrounding the tooth may become infected and form abscesses. Abscesses cause infection and weaken the support structure around teeth. Root canals are a procedure designed to save the tooth by removing the infected pulp and nerve in the root of the tooth, cleaning and shaping the inside of the root canal, then filling and sealing the space. Afterward, your dentist will place a crown on the tooth to protect and restore it to its original function.