Question 57 · LDEK · Post and core restorations
Indicate materials used for casting individual post and cores:
1) nickel-chromium steel;
2) cobalt-chromium alloys;
3) nickel-chromium alloys;
4) palladium-silver alloys;
5) gold alloys type III and IV;
6) silver alloys;
7) thermoplastic materials.
The correct answer is:
2) cobalt-chromium alloys;
3) nickel-chromium alloys;
4) palladium-silver alloys;
5) gold alloys type III and IV;
6) silver alloys;
7) thermoplastic materials.
The correct answer is:
- A. 1,3,4.
- B. 2,3,5.
- C. 2,3,4,5.
- D. 3,4,6,7.
- E. 4,5,6,7.
Hint
Choose casting alloys that are strong and corrosion-resistant; exclude wrought materials, corrosion-prone alloys and non-metals.
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