Question 59 · LDEK · Cast partial dentures
When the parallelometer analysis (surveying) showed that the retentive surface on the abutment tooth characterizes with a sharp degree of undercut, the following should be performed:
1) planning the clasp with a long intermediate part;
2) planning the clasp with a short intermediate part;
3) correcting the shape of the retentive surface by preparation within the enamel range;
4) planning to block out the undercut on the working cast.
The correct answer is:
2) planning the clasp with a short intermediate part;
3) correcting the shape of the retentive surface by preparation within the enamel range;
4) planning to block out the undercut on the working cast.
The correct answer is:
- A. 1,3.
- B. 2,3.
- C. 1,4.
- D. 2,4.
- E. 3,4.
Hint
A steep undercut gradient overloads a stiff clasp arm; think about increasing arm flexibility or changing the tooth contour.
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
- In what way should the upper custom impression tray be shaped for functional impression in edentulous patient?
- Which properties do not characterize zirconia-based ceramic?
- Which properties of titanium alloys are causing the difficulty in their casting?
- The examination of static occlusion includes:
- The patient came to the dental office to have porcelain veneers done. The material that exhibits the lowest adhesion to the luting cement is:
- Indicate the true statement concerning the prosthetic bridge: