Question 255 · LDEK · Complete dentures
Posterior palatal seal of the maxillary denture is performed in order to:
1) enlarging the denture coverage;
2) retaining the seal on the border of hard and soft palate;
3) obtaining the marginal seal;
4) good retention of the denture;
5) prevention of penetration of the food leftovers under the base;
6) decreasing the gag reflex;
7) reduction of the effects of polymerization shrinkage of the acrylic material;
8) shortening the coverage of palatal base.
The correct answer is:
2) retaining the seal on the border of hard and soft palate;
3) obtaining the marginal seal;
4) good retention of the denture;
5) prevention of penetration of the food leftovers under the base;
6) decreasing the gag reflex;
7) reduction of the effects of polymerization shrinkage of the acrylic material;
8) shortening the coverage of palatal base.
The correct answer is:
- A. 1, 3, 5.
- B. 2, 4, 5, 7.
- C. 2, 4, 7, 8.
- D. 3, 6, 8.
- E. 4, 5, 7.
Hint
The post dam presses the base border into compressible tissue at the vibrating line; consider seal, retention, food ingress and acrylic shrinkage.
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