Question 22 (part 2) · LDEK · Irrigation and intracanal medicaments
Iodine and its derivatives in the form of water solutions, which are strongly antiseptic, are used in root canal disinfection. Choose correct statements regarding those products:
1) they are used in RTC between visits;
2) they are characterized by slow loss of bactericidal features and can stay in the canal longer than 2 days;
3) its strong antiseptic action is caused by combining the iodine ions with proteins of bacterial cells and oxygen and iono-hydrogen release due to the reaction of iodine with water;
4) produced from vapor solutions they penetrate up to even 1000 μm into lateral root branches and dentin tubules;
5) in relatively small concentrations, they destroy bacteria and their toxins very quickly and effectively, but not without damaging live cells.
Correct answer is:
2) they are characterized by slow loss of bactericidal features and can stay in the canal longer than 2 days;
3) its strong antiseptic action is caused by combining the iodine ions with proteins of bacterial cells and oxygen and iono-hydrogen release due to the reaction of iodine with water;
4) produced from vapor solutions they penetrate up to even 1000 μm into lateral root branches and dentin tubules;
5) in relatively small concentrations, they destroy bacteria and their toxins very quickly and effectively, but not without damaging live cells.
Correct answer is:
- A. 1,2,4.
- B. 1,4,5.
- C. 1,3,4.
- D. 1,2,3,4.
- E. all of the above mentioned.
Hint
Consider how long iodine keeps its activity in the canal and how toxic it is to host tissues at low concentration.
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