Question 578 · LDEK · Irrigation and intracanal medicaments
Select the false statements about sodium hypochlorite used in endodontic procedures:
1) dissolves collagen fibres of the dentine;
2) effectively removes the smear layer;
3) is highly corrosive;
4) causes coagulation abnormalities;
5) is neutral for living tissues;
6) can be used as the final agent for root canal irrigation.
The correct answer is:
2) effectively removes the smear layer;
3) is highly corrosive;
4) causes coagulation abnormalities;
5) is neutral for living tissues;
6) can be used as the final agent for root canal irrigation.
The correct answer is:
- A. 1,2,3.
- B. 2,3,4.
- C. 1,3,4.
- D. 3,4,5.
- E. 2,5,6.
Hint
Separate the organic and inorganic parts of the smear layer, and think about tissue toxicity and residual oxidising effects of the irrigant.
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