A broken nerve in a tooth usually requires a root canal. Root canal rinsing agents, root canal disinfectants, etc. may be used during root canal treatment. 1. In addition to the mechanical preparation of the root canal during root canal treatment, it is necessary to effectively rinse and disinfect the root canal with chemical agents. At present, the commonly used clinical root canal rinsing agents include sodium hypochlorite solution, hydrogen peroxide solution, chlorhexidine solution and so on. 2. Root canal disinfection is one of the very important steps in the root canal treatment process, and its purpose is to use medication to control the infection that still remains in the root canal system after root canal preparation and flushing. Currently, calcium hydroxide paste is the drug of choice for root canal disinfection. Consultation with a medical professional is recommended.