Question 33 (part 2) · LDEK · Cast partial dentures
In a working model before replication, following surfaces are blocked:
1) udercuts on teeth surfaces, which have been used for placing introductory arms;
2) on alveolar processes, places covered with acrylic are blocked;
3) classic guiding surfaces;
4) indirect surfaces;
5) fragments of retention surfaces under clasps arms;
6) ridge undercuts;
7) interdental spaces of teeth that are not abutments.
Correct answer is:
2) on alveolar processes, places covered with acrylic are blocked;
3) classic guiding surfaces;
4) indirect surfaces;
5) fragments of retention surfaces under clasps arms;
6) ridge undercuts;
7) interdental spaces of teeth that are not abutments.
Correct answer is:
- A. 1,5,6,7.
- B. 2,5,6,7.
- C. 2,4,7.
- D. 5,7.
- E. 3,4,5.
Hint
Block out what the rigid framework must not engage or what needs relief; leave open what denture elements are designed to use.
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