Question 118 · LDEK · Cast partial dentures
In the case of tooth-tissue supported partial dentures that reconstruct bilateral distal extension of edentulous areas (class III according to topographic classification - first premolars are present) the following rests are indicated:
1) rests located on the proximal area of a tooth next to an edentulous space;
2) rests located on the distal area of a tooth next to an edentulous space;
3) rests located on a tooth adjacent to the abutment tooth;
4) mucosa-borne denture.
The correct answer is:
2) rests located on the distal area of a tooth next to an edentulous space;
3) rests located on a tooth adjacent to the abutment tooth;
4) mucosa-borne denture.
The correct answer is:
- A. only 1.
- B. only 2.
- C. only 3.
- D. 2,3.
- E. only 4.
Hint
Distal extension saddles sink into the mucosa; where must the rest sit so that this rotation loads the premolars axially instead of tipping them?
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