Question 230 · LDEK · Bridges
Indicate the favorable features of the span and pontics from the biomechanics of the prosthetic bridge point of view:
1) most favorable are short, one- or two-unit spans;
2) span as short as possible, joining the abutments along the straight line;
3) for esthetic reasons, the span should follow the curvature of the dental arch;
4) rigidity of the construction prevents from span bending and transferring stresses to the abutments;
5) occlusal surface of the pontic precisely resembles the occlusal surface of the tooth it replaces;
6) occlusal surface of the pontic has less sharp cusps;
7) one third reduction in the pontic width.
The correct answer is:
2) span as short as possible, joining the abutments along the straight line;
3) for esthetic reasons, the span should follow the curvature of the dental arch;
4) rigidity of the construction prevents from span bending and transferring stresses to the abutments;
5) occlusal surface of the pontic precisely resembles the occlusal surface of the tooth it replaces;
6) occlusal surface of the pontic has less sharp cusps;
7) one third reduction in the pontic width.
The correct answer is:
- A. 1,2,3,5.
- B. 1,2,4,6,7.
- C. 2,4,5,6.
- D. 1,3,5,7.
- E. 3,5,6,7.
Hint
Biomechanically, aim for a short, straight, stiff span with reduced occlusal load rather than full anatomical replication.
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
- To take impressions for fixed dentures, elastic impression materials are used, which ensure the ease of removal after setting and sufficient…
- Which of the following standard data determined with the occlusal calotte are used while setting artificial teeth in a complete denture?
- Which of the following impression materials have the lowest shrinkage and thus are recommended in implantology?
- Indicate the true statements concerning determining the occlusal plane in edentulous patients:
- The possibility of limiting the upper mucosa-supported removable partial denture bearing area depends on:
- Indicate the true statements concerning the functional impression taking technique: