Question 609 · LDEK · Irrigation and intracanal medicaments
What is the role of 17% EDTA products in root canal preparation?
- A. it dissolves organic tissues.
- B. it removes the smear layer and dissolves mineral salts.
- C. it facilitates thermal obturation of the canal.
- D. it has antibacterial and disinfecting properties.
- E. it bonds chemically with gutta-percha.
Hint
EDTA is a chelating agent — consider which component of dentin and of the smear layer it binds and dissolves.
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