Question 545 · LDEK · Irrigation and intracanal medicaments
Choose true statements regarding the procedure of photoactive disinfection of root canals:
1) the procedure is performed with the use of high-power lasers;
2) dye activation initiates the creation of singlet oxygen;
3) the effectiveness of the procedure increases with the increase of excitation wavelength;
4) toluidine blue is the most often used photosensitizer.
The correct answer is:
2) dye activation initiates the creation of singlet oxygen;
3) the effectiveness of the procedure increases with the increase of excitation wavelength;
4) toluidine blue is the most often used photosensitizer.
The correct answer is:
- A. 1,2.
- B. 2,3.
- C. 3,4.
- D. 2,4.
- E. 1,3.
Hint
Photodynamic disinfection relies on a dye excited by matched low-power light; think about the reactive species produced and the common dyes.
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