Question 194 · LDEK · Acrylic partial dentures
Indicate the possibilities of limiting the base of an upper mucosa-supported removable partial denture:
1) in the anterior region, within the vestibular part of the base for aesthetic reasons in the case of the alveolar ridge with undercuts;
2) from the vestibular side, the alveolar ridge is covered with the denture base on the full length of the edentulous space;
3) at the remaining teeth, the denture base may be placed 6-8 mm away;
4) the reduction of the denture base does not depend on the condition of the denture bearing area, number and location of teeth;
5) the limiting the denture base depends on good conditions of the denture bearing area and the presence of a sufficient number and favorable location of teeth;
6) when natural teeth opposing the space are well anchored and with favorable anatomical conditions the denture base may be limited;
7) even with a good condition of the denture bearing area, when opposing to edentulous spaces natural teeth are active in chewing, especially with the lack of supporting zones, the denture base should not be limited;
8) the most often the denture base is limited in the posterior region, exposing considerable part of the hard palate;
9) limiting the denture base in the anterior region should be planned so that its margins run across the palatal rugae.
The correct answer is:
2) from the vestibular side, the alveolar ridge is covered with the denture base on the full length of the edentulous space;
3) at the remaining teeth, the denture base may be placed 6-8 mm away;
4) the reduction of the denture base does not depend on the condition of the denture bearing area, number and location of teeth;
5) the limiting the denture base depends on good conditions of the denture bearing area and the presence of a sufficient number and favorable location of teeth;
6) when natural teeth opposing the space are well anchored and with favorable anatomical conditions the denture base may be limited;
7) even with a good condition of the denture bearing area, when opposing to edentulous spaces natural teeth are active in chewing, especially with the lack of supporting zones, the denture base should not be limited;
8) the most often the denture base is limited in the posterior region, exposing considerable part of the hard palate;
9) limiting the denture base in the anterior region should be planned so that its margins run across the palatal rugae.
The correct answer is:
- A. 1,2,3,4,6,8.
- B. 2,3,5,6,8,9.
- C. 1,2,5,6,8,9.
- D. 1,2,5,7,8.
- E. 2,3,4,6,8,9.
Hint
Base reduction requires favourable conditions; consider strong opposing natural teeth and how the margin should relate to the palatal rugae.
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