Question 214 · LDEK · Cast partial dentures
Designing independent clasps is possible in the case of:
1) presence of retentive planes on teeth;
2) presence of retentive planes and classically or actively guiding planes on the same tooth;
3) presence of actively and classically guiding planes on the same tooth;
4) presence of two actively guiding planes on the tooth;
5) long enough path of insertion;
6) presence of indirect clasp planes of sufficient dimensions;
7) presence of insertion planes on clasped teeth.
The correct answer is:
2) presence of retentive planes and classically or actively guiding planes on the same tooth;
3) presence of actively and classically guiding planes on the same tooth;
4) presence of two actively guiding planes on the tooth;
5) long enough path of insertion;
6) presence of indirect clasp planes of sufficient dimensions;
7) presence of insertion planes on clasped teeth.
The correct answer is:
- A. 1,2,3.
- B. 3,4,5,7.
- C. 2,3,4.
- D. 1,4,5,6,7.
- E. 1,5,6,7.
Hint
An independent clasp must find both retention and a guiding or counteracting surface on one and the same tooth.
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