Question 247 · LDEK · Cast partial dentures
Directional action of clasps is a rule that defines:
1) necessity of use of two arm clasps on retention teeth which do not comply with the requirements of retention surface;
2) need to take account of degree of deepening the retention surface for correct location of proper part of retentive arm;
3) necessity of using stabilizing claps on teeth located away from the gap;
4) designing the supragingival claps in case of dental loss located in anterior and lateral area of alveolar process;
5) necessity of designing retentive clasp in such a way, that its end is directed towards the gap.
The correct answer is:
2) need to take account of degree of deepening the retention surface for correct location of proper part of retentive arm;
3) necessity of using stabilizing claps on teeth located away from the gap;
4) designing the supragingival claps in case of dental loss located in anterior and lateral area of alveolar process;
5) necessity of designing retentive clasp in such a way, that its end is directed towards the gap.
The correct answer is:
- A. 1, 4.
- B. 2, 3.
- C. only 2.
- D. 4, 5.
- E. 1, 5.
Hint
Think about how the direction in which the undercut deepens dictates where the flexible terminal part of the retentive arm must lie.
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
- Ante’s law, which determines the suitability of abutments for bridges, speaks about:
- In case of a target adhesive cementation of prosthetic restoration in the form of temporary crown, you cannot use:
- Patient reported with a complete denture fractured along the palatine suture. The dentist should:
- Nowadays used materials for veneering the fixed prosthesis are made of:
- Intracrown prosthetics can be made of:
- Choose correct sentences regarding the electrolytic polishing: