Question 36 (part 2) · LDEK · Cast partial dentures
Indicate true statements regarding the retention arm of clasp in cast removable denture:
1) it is found on the retention surface;
2) it is found on the lower angular surface in relation to the guiding;
3) it may cooperate with actively guiding arm, located on the tooth on the other side of the arch, on opposite surface;
4) it occupies the entire breadth of the tooth;
5) it may cooperate with classic guiding arm, located on the tooth on the opposite side of the tooth gap.
Correct answer is:
2) it is found on the lower angular surface in relation to the guiding;
3) it may cooperate with actively guiding arm, located on the tooth on the other side of the arch, on opposite surface;
4) it occupies the entire breadth of the tooth;
5) it may cooperate with classic guiding arm, located on the tooth on the opposite side of the tooth gap.
Correct answer is:
- A. 1,2,5.
- B. 2,3.
- C. 1,3,4.
- D. 1,2,4,5.
- E. 1,2,3,4.
Hint
Only the flexible terminal part of a retentive arm enters the undercut, and it needs a reciprocating element elsewhere.
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