Question 197 · LDEK · Irrigation and intracanal medicaments
Indicate the sets of irrigation fluids including only the fluids and their concentrations used in endodontic treatment:
1) 0.2% chlorhexidine (CHX), 5.25% ethylendiaminetetraacetic acid (EDTA);
2) 2.5% sodium hypochlorite, 15% citric acid;
3) 17% EDTA, 5.25% NaOCl;
4) 0.9% NaCl, 15% EDTA;
5) 50% citric acid, 2% CHX;
6) 3% H₂O₂, 5.25% NaCl.
The correct answer is:
2) 2.5% sodium hypochlorite, 15% citric acid;
3) 17% EDTA, 5.25% NaOCl;
4) 0.9% NaCl, 15% EDTA;
5) 50% citric acid, 2% CHX;
6) 3% H₂O₂, 5.25% NaCl.
The correct answer is:
- A. 1,2,6.
- B. 1,4,6.
- C. 2,3,5.
- D. 3,4,5.
- E. 4,5,6.
Hint
Check each concentration: saline is 0.9%, EDTA is used at 15–17%, CHX for irrigation at 2%, NaOCl at 0.5–5.25%.
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