Question 231 · LDEK · Impressions and impression materials
To take impressions for fixed dentures, elastic impression materials are used, which ensure the ease of removal after setting and sufficient accuracy in reproducing details of the prosthetic area. These conditions are fulfilled by the following impression materials:
1) alginate hydrocolloid;
2) silicone;
3) polyether;
4) polysulfide.
The correct answer is:
2) silicone;
3) polyether;
4) polysulfide.
The correct answer is:
- A. 1,2,3.
- B. 2,3,4.
- C. all the above.
- D. 3,4.
- E. 1,4.
Hint
Which elastic materials combine elasticity with the detail reproduction and dimensional stability that crowns and bridges require?
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