Chapter 1

Question 1

What is the statistical life expectancy of a FPD abutment in 10 yrs?

a) less than 10% lost
b) up to 22% lost
c) up to 44% lost
d) more than 50% lost

Answer 1

c) up to 44% lost

Question 2

A patient often wears a denture for more than 15 yrs. We can expect to see all the following changes except:

a) reversed smile line
b) larger appearance of nose
c) larger appearance of chin
d) increased horizontal lines in the face and lips

Answer 2

c) larger appearance of chin

Question 3

Which is NOT a true soft tissue consequence of edentulism?

a) tongue is more active in mastication, which increases denture stability.
b) tongue increases in size, actively holding down denture in place, increasing stability of denture.
c) decreased neuromuscular control of jaw in elderly
d) tissue thickness decrease with age and systemic disease, creating more sore spots dentures

Answer 3

b) tongue increases in size, actively holding down denture in place, increasing stability of denture.

Question 4

Which is a consequence of full edentulism?

a) loss of prominent internal oblique ridge
b) loss of basal bone
c) loss of genial tubercle
d) backward movement of prosthesis due to bone loss

Answer 4

b) loss of basal bone

Question 5

Clicking sounds made by a denture wearer are NOT caused by:

a) mylohyoid flexing
b) buccinator flexing
c) increased vertical dimension 
d) mandibular posterior basal bone loss

Answer 5

c) increased vertical dimension

Question 6

What is the expected loss of chewing efficiency due to an implant supported overdenture, compared to natural dentition?

a) 10%
b) 20%
c) 30%
d) 40%

Answer 6

a) 10%

Question 7

Which statement is NOT true?

    a) Maximum occlusal force of traditional denture wearer can be expected to increase in 3 yrs by  300% post treatment with implant supported fixed prosthesis, compared with pre-treatment.
b) Maximum occlusal force of traditional denture wearer ranges from 5--50 lbs.
c) Post treatment, it will increase by 85% in 2 months.
d) Implant supported fixed bridges do not function with similar forces as natural teeth.

Answer 7

d) Implant supported fixed bridges do not function with similar forces as natural teeth.

Question 8

How often should a denture reline be recommended?

a) every year
b) every 2 yrs
c) every 10 yrs
d) every 5 yrs

Answer 8

d) every 5 yrs

Question 9

Proprioception of natural dentition can distinguish 20 um between teeth; for complete denture patient, 100um. How much distinguishment will be allowed by rigid implant bridges?

a) 20 um
b) 50 um
c) 110 um
d) 80Um

Answer 9

b) 50 um

Question 10

Which choice would bring on maximum bone loss after extraction?

a) no restoration
b) fixed bridge
c) removable partial denture
d) implant

Answer 10

c) removable partial denture