Endodontics · single question
Why is sodium hypochlorite used in endodontic irrigation?
Show answer and explanation
Correct answer: A. Bactericidal and tissue-dissolving
- A. Correct. Sodium hypochlorite (NaOCl) is the primary endodontic irrigant due to its strong antibacterial (bactericidal) action and ability to dissolve organic (pulpal/necrotic) tissue.
- B. Canal lubrication is more characteristic of agents like EDTA gel/RC-Prep, not the primary purpose of NaOCl.
- C. Smear layer removal is primarily achieved by EDTA (a chelating agent), not NaOCl.
- D. NaOCl does not provide radiopacity; this is not a relevant property for an irrigant.