Question 126 (part 2) · LDEK · Dental laboratory technology
Arrange the correct order of laboratory execution of zircon oxide coping bridge in the CAD/CAM system:
1) designing the virtual model of zirconium coping using a computer;
2) excising the coping from pressed zirconium block using numerically controlled milling machine;
3) casting the working and diagnostic models;
4) sintering the zirconium coping;
5) processing the veneering porcelain in a layering technique.
Correct answer is:
2) excising the coping from pressed zirconium block using numerically controlled milling machine;
3) casting the working and diagnostic models;
4) sintering the zirconium coping;
5) processing the veneering porcelain in a layering technique.
Correct answer is:
- A. 3,4,1,5,2,6.
- B. 3,4,1,5,2.
- C. 3,4,1,2,5,6.
- D. 3,4,1,2,5.
- E. 3,4,1,2,6,5.
Hint
Physical models must be digitised before the framework can be designed, and zirconia is milled in its soft presintered state before final sintering.
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