General

Question 1

Factors related to bone resorption

Answer 1

Period of edentulousness
Wear habits of denture
Quality of denture
Gender
Inherent quality of the ridge
Parafunctional habits
Systemic influences - osteoporosis 
Periodontal disease
Extraction technique

Question 2

What factors may enable a good prognosis of dentures for the first time?

Answer 2

Early loss of teeth
Powers of adaptation good
Fit and healthy

Question 3

What factors may enable a good prognosis for replacement complete dentures?

Answer 3

Minor complaints
History of success
Design satisfactory
Design faults apparent

Question 4

What are the properties of preliminary impression material for C/C?

Answer 4

Mucocompressive
Poor surface detail
Shrinkage 1.5%
High coefficient of thermal expansion
Rigid on cooling
Has viscosity to support itself beyond confines of maximum denture area

Question 5

What depth was spacer should be used in special trays for ZOE?

Answer 5

0.5mm

Question 6

What depth wax spacer should be used for special tray for PVS?

Answer 6

1.5mm

Question 7

What depth wax spacer should be used for special tray for alginate?

Answer 7

3mm

Question 8

Properties of ZOE?

Answer 8

Good surface detail
Readily adapts to soft tissues
Gradual set therefore amenable to border moulding 
Rigid
Adherent to skin
Burning sensation

Question 9

Requirements for compete denture impressions ?

Answer 9

Close fit to denture bearing tissue
Cover the maximum denture bearing area
Border form of prosthesis should establish peripheral seal and support lips and cheek

Question 10

How to take impression of flabby ridge?

Answer 10

Take impression in alginate and send to lab
Remove flabby area from special tray and border mould
Take ZOE impression of non flabby areas
Take impression of flabby areas in green stick
This produces a cast of DBA undisplaced at rest and offers best chance at retention