Question 183 · LDEK · Irrigation and intracanal medicaments
Indicate the true statements concerning root canal irrigation:
1) it is recommended to irrigate the canal after applying each file;
2) use of endodontic needles increases safety, but significantly reduces the effectiveness of irrigation;
3) optimal rinsing effect is obtained after inserting the needle to 1/3 of the working length of the root canal;
4) irrigants used in endodontics quickly deactivate;
5) effective cleaning of the apical part of a root canal is obtained, when an irrigant is used in the canal prepared up to ISO 25.
The correct answer is:
2) use of endodontic needles increases safety, but significantly reduces the effectiveness of irrigation;
3) optimal rinsing effect is obtained after inserting the needle to 1/3 of the working length of the root canal;
4) irrigants used in endodontics quickly deactivate;
5) effective cleaning of the apical part of a root canal is obtained, when an irrigant is used in the canal prepared up to ISO 25.
The correct answer is:
- A. 1,4.
- B. 2,3.
- C. 1,2.
- D. 3,5.
- E. 4,5.
Hint
Think about where the needle tip should be relative to the working length and how quickly irrigants are used up.
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