Question 90 (part 2) · LDEK · Cast partial dentures
Indicate true statements regarding resting places:
1) it should closely adhere to the tooth surface, forming its negative, at the same time not disturbing the occlusion;
2) surface of the resting place on the tooth is ranged from 2 to 22 mm2;
3) rigid rest occurs when the resting place is placed on the surface of a tooth adjacent to the gap;
4) rigid distant rest occurs when the resting place is placed on the surface of a tooth adjacent to the gap, but on the opposite side;
5) rigid distant rest occurs when the rest place is located on the second or further tooth from the gap.
Correct answer is:
2) surface of the resting place on the tooth is ranged from 2 to 22 mm2;
3) rigid rest occurs when the resting place is placed on the surface of a tooth adjacent to the gap;
4) rigid distant rest occurs when the resting place is placed on the surface of a tooth adjacent to the gap, but on the opposite side;
5) rigid distant rest occurs when the rest place is located on the second or further tooth from the gap.
Correct answer is:
- A. 2,5.
- B. 1,2,5.
- C. 1,3,4,5.
- D. 1,3.
- E. 4,5.
Hint
Recall how close, distant and remote rigid support are defined by where the rest sits relative to the edentulous gap.
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