Question 159 · LDEK · Irrigation and intracanal medicaments
Which of the statements regarding chlorhexidine are true?
1) it has strong bacteriostatic, bactericidal and antifungal properties;
2) it electrostatically binds to the surface of bacteria, causes a leakage of intracellular substance and consequently causes cell death;
3) it binds with hydroxyapatite and by changing its properties prevents the attachment of bacteria;
4) its 2% solution used in endodontic treatment effectively eliminates E. faecalis.
The correct answer is:
2) it electrostatically binds to the surface of bacteria, causes a leakage of intracellular substance and consequently causes cell death;
3) it binds with hydroxyapatite and by changing its properties prevents the attachment of bacteria;
4) its 2% solution used in endodontic treatment effectively eliminates E. faecalis.
The correct answer is:
- A. all the above.
- B. 2,3,4.
- C. 1,3,4.
- D. 1,2,4.
- E. 1,2,3.
Hint
Consider chlorhexidine's cationic nature, its binding to tooth surfaces and its spectrum of activity in the root canal.
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