Question 84 · LDEK · Crowns
Which of the following statements concerning the type of finish line configuration depending on the type of prosthetic crown is true:
1) the finish line at a right angle to the axial surfaces is favorable in relation to all ceramic crowns;
2) the finish line at a right angle to the axial surfaces is favorable in relation to cast metal crowns;
3) the chamfer finish line is favorable in relation to all ceramic crowns;
4) the chamfer finish line is favorable in relation to cast metal crowns.
The correct answer is:
2) the finish line at a right angle to the axial surfaces is favorable in relation to cast metal crowns;
3) the chamfer finish line is favorable in relation to all ceramic crowns;
4) the chamfer finish line is favorable in relation to cast metal crowns.
The correct answer is:
- A. only 1.
- B. only 2.
- C. 1,4.
- D. 2,3.
- E. only 4.
Hint
Which material tolerates a thin margin? Brittle ceramic needs bulk at the edge, while cast metal can be finished to a fine edge.
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