Considerations

Question 1

What is the definition of Support?

Answer 1

resistance to vertical movement

Question 2

What is the definition of Retention?

Answer 2

resistance to displacement of vertical direction

Question 3

what is the definition of Stability?

Answer 3

resistance to horizontal movement

Question 4

Describe support

Answer 4

“resistance to vertical movement”
how well underlying tissues, inc. mucosa keeps denture from moving vertically towards arch + being excessively depressed + moving deeper into arch

Support provided by:
- buccal shelf
- residual ridge
- retromolar pad
- hard palate
residual ridge

Question 5

What areas of the mouth provide support?

Answer 5

Mandible:

• buccal shelf
• residual ridge
• retromolar pad

Maxilla

• hard palate
• residual ridge

Question 6

What areas of the mandible provide support?

Answer 6

• buccal shelf
• residual ridge
• retromolar pad

Question 7

What areas of the maxilla provide support?

Answer 7

• hard palate
• residual ridge

Question 8

What features of a denture provide good retention?

Answer 8

• accurate fit of the denture base to mucosa (smallest space possible between them)
• good border seal (extension of dental flanges into depth of functional sulcus + incorporating post dam on upper complete denture)
• denture borders should not interfere with muscles / frenal attachments

Question 9

How do you create a good border seal in a denture?

Answer 9

• extending denture flanges into the depth of the functional sulcus
• incorporation of post dam on upper complete denture

Question 10

How do you test the retention of a denture?

Answer 10

Pull vertically on anterior teeth

Question 11

How do you test the stability of a denture?

Answer 11

Place fingers on occlusal surface + try rocking denture side-to-side

Question 12

What factors provide denture support?

Answer 12

Palate + Ridges

Question 13

How may denture retention be reduced?

Answer 13

• denture overextended + interfering with muscles + frenal attachment
• denture peripheries underextended

Question 14

How may denture stability be reduced?

Answer 14

• denture under-extended
• occlusion not balanced

Question 15

What are the 8 stages in Conventional Dentures

Answer 15

1. Assessment of patient + denture
2. Primary impressions
3. Master Impressions (definitive/secondary)
4. Registration visit
5. Trial Insertion visits (tooth trial)
6. Insertion (delivery)
7. Maintenance (review)
8. Aftercare

Question 16

What are the 9 stages of the denture process?

Answer 16

1. primary stock trays
2. primary impression
3. special/custom trays
4. secondary/master impression
5. occlusal rims + bases
6. registration
7. tooth selection
8. wax trial
9. delivery

Question 17

What are the 7 stages in replica construction?

Answer 17

1. Assessment of patient + dentures
2. Replica impressions
3. 2nd impression + occlusion
4. Try in (re-try)
5. Finish
6. Maintenance
7. Aftercare