Root canal treatment, or endodontic therapy, is a procedure to save a severely damaged or infected tooth. RCT involves removing the infected pulp from the tooth’s interior, cleaning and disinfecting the canals, and then filling and sealing them to prevent further infection. This treatment is necessary when the tooth’s pulp becomes infected due to decay, trauma, or deep cavities, causing severe pain, abscesses, or potential tooth loss if left untreated.