Chapter 5

Question 1

In a healing extraction socket, woven bone starts to form:

  a) In the crestal part of the socket
  b) From the clot
  c) In the socket walls
  d) In the apical area

Answer 1

a) In the crestal part of the socket

Question 2

Regeneration in a socket occurs when:

  a) The labial bone is missing
  b) Trauma initiates inflammation
  c) Fibroblasts are excluded
  d) Epithelialization is inhibited

Answer 2

b) Trauma initiates inflammation

Question 3

Soft tissue grows over the socket within:

   a) 4-5 days
   b) 7-14 days
   c) 2-3 wks
   d) 4wks

Answer 3

c) 2-3 wks

Question 4

In socket preservation FDB is used:

a) In the crestal area for a 3 wall boney defect
b) To repair bone when the labial plate is missing
c) In the apical area only for a 5 wall defect
d) In the apical area only for a 3 wall defect

Answer 4

d) In the apical area only for a 3 wall defect

Question 5

Transforming growth factor:

  a) Stimulates trabecular bone forming from woven bone
  b) Increases scarring
  c) Stimulates blood vessel proliferation
  d) Reduces inflammation

Answer 5

b) Increases scarring

Question 6

For Guided Bone Regeneration the membrane should last at least:

  a) 6-8 wks
  b) 5-6 wks
  c) until the socket is covered with soft tissue
  d) until trabecular bone fills the socket

Answer 6

a) 6-8 wks

Question 7

In guided bone generation an implant can be placed

  a) Only after 2-3 mos
  b) When an implant can be positioned ideally
  c) In maxillary posterior areas, only where the graft is completely healed
  d) When autologous bone is used to increase bone width and height

Answer 7

b) When an implant can be positioned ideally

Question 8

The membrane in guided bone regeneration is placed:

  a) Under PRP
  b) Under the release incisions
  c) 2-3 mm from the sulcus of a tooth
  d) 5-7 mm away from the split thickness part of the flap

Answer 8

c) 2-3 mm from the sulcus of a tooth

Question 9

The flap in GBR is extended

  a) No more than 5 mm beyond the extent of the graft
  b) Far enough to get primary closure
  c) Far enough to release the periostium
  d) At least 5mm past the MGJ

Answer 9

d) At least 5mm past the MGJ

Question 10

Acellular dermal matrix is used:

 a) To prevent incision lines from opening over the graft site
 b) Because it is completely resorbed in healing
 c) After rehydrating for 10 minutes
 d) In the esthetic zone to develop the soft tissue drape

Answer 10

d) In the esthetic zone to develop the soft tissue drape