Question 184 · LDEK · Cast partial dentures
Indicate the true statements concerning the distal rigid support in cast clasp-retained removable partial dentures:
1) occlusal rest is placed on the surface of the tooth, facing the edentulous space;
2) occlusal rest is placed on the tooth next to the edentulous space, but on the opposite surface;
3) occlusal rest is placed on the second or further tooth from the edentulous space;
4) according to McCracken, it involves indirect rests;
5) according to McCracken, it involves direct rests;
6) it is used in bounded edentulous spaces;
7) it is used in unbounded edentulous spaces;
8) splint bar connections work as the distal rigid rest.
The correct answer is:
2) occlusal rest is placed on the tooth next to the edentulous space, but on the opposite surface;
3) occlusal rest is placed on the second or further tooth from the edentulous space;
4) according to McCracken, it involves indirect rests;
5) according to McCracken, it involves direct rests;
6) it is used in bounded edentulous spaces;
7) it is used in unbounded edentulous spaces;
8) splint bar connections work as the distal rigid rest.
The correct answer is:
- A. 1,5,6,8.
- B. 2,4,6,7.
- C. 3,4,7.
- D. 2,3,4,6,8.
- E. 1,4,6,7,8.
Hint
Distant support lies away from the gap; consider its role in free-end saddles where the denture tends to rotate about a fulcrum line.
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