What is the role of chemomechanical debridement in endodontic therapy?

• A. Remove infected pulp and disinfect canal
• B. Clean tongue
• C. Polish enamel
• D. Extract secondary teeth

Answer: (A)

Chemomechanical debridement in endodontic therapy is the process of cleaning and disinfecting the root canal system. It combines mechanical action from files to physically remove infected pulp tissue, debris, and biofilm with chemical irrigation to dissolve organic material and kill bacteria. The aim is to create a clean, sterile canal environment so the canal can be properly sealed and healing can occur. This step is specific to the inside of the tooth and is not about cleaning the tongue, polishing enamel, or extracting teeth.