Question 187 · LDEK · Root canal obturation
Indicate the true statements regarding cold gutta-percha lateral compaction:
1) master cone should fit in the apical portion of the canal, there should be a noticeable resistance upon its removing;
2) accessory cones are placed in the canal at the same length as the master cone;
3) spreader should be inserted into the canal for a longer length than the defined working length;
4) immediately after removing the spreader, the earlier prepared accessory cone should be placed into the canal.
The correct answer is:
2) accessory cones are placed in the canal at the same length as the master cone;
3) spreader should be inserted into the canal for a longer length than the defined working length;
4) immediately after removing the spreader, the earlier prepared accessory cone should be placed into the canal.
The correct answer is:
- A. 1,2.
- B. 2,3.
- C. 1,4.
- D. 1,3.
- E. 2,4.
Hint
Consider the tug-back of the master cone, the spreader penetration depth and how quickly the space left by the spreader closes.
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