Endodontics · single question
Which intracanal irrigant is the GOLD STANDARD used during root canal treatment?
Show answer and explanation
Correct answer: C. Sodium hypochlorite (NaOCl)
- A. MTA is a root-end filling and pulp capping material — not an irrigant.
- B. Camphorated phenol is an old intracanal medicament/dressing — not an irrigant and not the gold standard.
- C. Sodium hypochlorite (NaOCl) is the GOLD STANDARD irrigant for root canal treatment. It is the ONLY irrigant that dissolves organic tissue (pulp remnants, biofilm). Available in concentrations from 0.5% to 5.25%, it provides antimicrobial action and dissolves necrotic tissue. It is used throughout instrumentation.
- D. Formocresol is a pulpotomy medicament for primary teeth — not an intracanal irrigant.