Exam 2 - Pre-Prosthetic Surgery

Question 1

How many Americans are edentulous?

Answer 1

10%

35% of those are above 65 years old are edentulous.

Question 2

Pattern of Maxillary resorption?

Answer 2

posterior superior

Question 3

pattern of mandibular resoprtion

Answer 3

posterior inferior

Question 4

Classification of edentulous jaws

I
II
III
IV
V
VI

Answer 4

I - dentate
II - immediately post extraction
III - ideal convex ridge form, adequate in height and width
IV - knife-edge, adequate height but not width
V - flat ridge form
VI - loss of basal bone

Question 5

Specific goals of ridge?

Answer 5

adequate width, height and U shape

mucosa should have uniform thickness

Ridge without undercuts or sharpness

No bony or soft tissue protuberances

Question 6

What is the prevalence of retained roots

Answer 6

11-37%

Question 7

Overclosure of the mandible might give the impression of what?

Answer 7

pseudo class III relationship

Mandible slides forward

Question 8

Importance of the soft tissue?

Answer 8

Healthy keratinized and firmly attached to the underlying bone is best

Question 9

Immediate Denture Treatment Sequence

Answer 9

1. Prophylaxis prior to extractions
2. Complicated extractions first
3. Extractions of maxillary and mandibular molars –> allow 6 weeks before final impressions
4. final impressions
5. Model surgery
6. Construction of clear surgical stent
7. Extraction of remaining teeth
8. denture insertion/adjustment