Practice Quiz

ADA NBDE National Board Dental Part II

Category - NBDE II

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Which irrigating solution demineralizes and softens dentin?
  1. Sodium hypochlorite
  2. Calcium hydroxide
  3. Ethylene-diamine-tetra-acetate
  4. Chlorhexidine
Explanation
Answer: C - The irrigation solution that demineralizes and softens dentin is ethylene-diamine-tetra-acetate. The solution removes inorganic ions like calcium, which allows the enlargement of calcified canals and can remove the smear layer in root canals before obturation.
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