Question 39 · LDEK · Crowns
Prosthetic porcelain-fused-to-metal crowns have high mechanical strength and fracture resistance. Indicate problems concerning these restorations:
1) high manufacturing cost;
2) inadequate transparency due to the presence of the metal coping;
3) defects of ceramic-metal bonding;
4) lack of gingival aesthetics showing grayish shadow;
5) lack of biocompatibility of the prosthetic materials;
6) necessity of excessive preparation of the abutments.
The correct answer is:
2) inadequate transparency due to the presence of the metal coping;
3) defects of ceramic-metal bonding;
4) lack of gingival aesthetics showing grayish shadow;
5) lack of biocompatibility of the prosthetic materials;
6) necessity of excessive preparation of the abutments.
The correct answer is:
- A. 2,3,4,5.
- B. 1,3,5.
- C. 2,3,6.
- D. 1,2,4,5.
- E. 3,4,6.
Hint
Weigh drawbacks inherent to an opaque metal framework with layered porcelain against claims about cost and biocompatibility.
The answer, the explanation and a note on every option are available once you log in. The account is free: topic tests, a mock exam, mistake review and statistics.
More questions on Prosthodontics
- The contraindications to all-ceramic restorations include:
- The shape of articular discs of the temporomandibular joint is influenced by:
- The concept of immediate side shift involves:
- In order to obtain the marginal integration of the crown with tooth structure and periodontal tissue:
- Indicate the true statements concerning galvanoforming technology used in prosthodontics:
- What type of gypsum is used for pouring working casts for complete dentures fabricated through injection molding technique?