Question 28 (part 2) · LDEK · Bridges
Lateral bridges on zirconium dioxide coping require:
1) “light chamfer” margin from lingual side and “heavy chamfer” from vestibular side;
2) core made from zirconium oxide of 0.3mm width;
3) bridge pontic connectors with crowns of minimum dimension of 12 mm2 in lateral section;
4) margin preparation of 1mm from the veneered side;
5) preparation of occlusal surface of 1 to 1.5 mm.
Correct answer is:
2) core made from zirconium oxide of 0.3mm width;
3) bridge pontic connectors with crowns of minimum dimension of 12 mm2 in lateral section;
4) margin preparation of 1mm from the veneered side;
5) preparation of occlusal surface of 1 to 1.5 mm.
Correct answer is:
- A. 1,4.
- B. 3,4.
- C. 1,2,4.
- D. 2,3,4.
- E. 2,4,5.
Hint
Posterior zirconia bridges carry high loads; think about connector size, minimum framework thickness and space for framework plus veneer.
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