Question 302 · LDEK · Impressions and impression materials
Select the correct statement describing the gingival retraction procedure:
1) products containing aqueous solutions of metals lead to coagulation of serum proteins and mechanical occlusion of blood vessels;
2) epinephrine syndrome refers to the onset of localized adverse reactions following the use of adrenaline products;
3) retraction cord should be slightly wet before being introduced into a gingival pocket;
4) cord thickness should be based on the measurement of the pocket depth using a periodontal probe;
5) in the dual cord technique, the thicker cord is placed at the bottom of the gingival pocket;
6) a correctly placed cord should be located slightly above the finish line and reveal the gingiva, so that the whole circumference can be seen.
The correct answer is:
2) epinephrine syndrome refers to the onset of localized adverse reactions following the use of adrenaline products;
3) retraction cord should be slightly wet before being introduced into a gingival pocket;
4) cord thickness should be based on the measurement of the pocket depth using a periodontal probe;
5) in the dual cord technique, the thicker cord is placed at the bottom of the gingival pocket;
6) a correctly placed cord should be located slightly above the finish line and reveal the gingiva, so that the whole circumference can be seen.
The correct answer is:
- A. 1,2,3,4.
- B. 1,2,4,5.
- C. 1,3,4.
- D. 4,5.
- E. 1,2,3,5,6.
Hint
Check each statement against the rule that the finish line must be fully exposed and that adrenaline can cause systemic effects.
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