Design

Question 1

Kennedy classification 1

Answer 1

Bilateral free-ended saddles

Question 2

Kennedy classification 2

Answer 2

Unilateral free-ended saddle

Question 3

Kennedy classification 3

Answer 3

1 bounded saddle

Question 4

Kennedy classification 4

Answer 4

Anterior bounded saddle - across midline

Question 5

How you you classify a patient without 1 posterior bounded saddle and 1 anterior bounded saddle?

Answer 5

Kennedy class 3 mod 1

Always classified from distal most saddle

Question 6

Why are cobalt chrome dentures favourable?

Answer 6

Gains support from both hard and soft tissues

Question 7

When is an acrylic denture indicated?

Answer 7

Inadequate support from remaining teeth

Immediate denture

Question 8

Why is cobolt chrome often not used?

Answer 8

Cost

Question 9

Where does a large proportion fo partial dentures support and stability(especially from free-end saddles) come from?

Answer 9

Extending denture into full denture bearing anatomy

Question 10

When is it not necessary to extend the partial denture into the full denture bearing anatomy?

Answer 10

Small bounded saddles where sulcus is insignificant

Question 11

How are periodontal tissues assessed before partial denture design?

Answer 11

BPE minimum
Appropriate recent radiographs - showing degree of bony support, any pathology to standing teeth?
PPD if necessary

Question 12

Describe the steps of partial denture design?

Answer 12

1. saddles
2. rests (either side of saddle)
3. Clasps - direct retention - ideally 2 - anterior and posterior
4. reciprocation - stop orthodontic forces
5. major connector
6. indirect retention

Question 13

Why do you design before taking major impressions?

Answer 13

Tooth modification may be needed

Question 14

What do bracing elements allow?

Answer 14

Resist lateral forces whilst fully seated