Question 24 (part 2) · LDEK · Access and canal preparation
Choose false statements regarding the circumferential root canal preparation:
1) this technique is not used for preparing very wide and straight canals;
2) this technique of file preparation is used in many methods, also in case of preparing very wide and straight canals;
3) top to bottom filing movements should be performed around the entire canal circumference;
4) to ensure safe dentin cutting, working instrument should not be pressed against the canal walls;
5) to ensure safe dentin cutting, working instrument should be lightly pressed against the canal walls.
Correct answer is:
2) this technique of file preparation is used in many methods, also in case of preparing very wide and straight canals;
3) top to bottom filing movements should be performed around the entire canal circumference;
4) to ensure safe dentin cutting, working instrument should not be pressed against the canal walls;
5) to ensure safe dentin cutting, working instrument should be lightly pressed against the canal walls.
Correct answer is:
- A. 1,3.
- B. 2,3.
- C. 1,3,4.
- D. 1,5.
- E. 1,4.
Hint
Two pairs of statements contradict each other; decide which canal shape this filing suits and whether the file must contact the walls.
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