Osseous Defects

Question 1

What are the different etiologies of alveolar bone loss

Answer 1

Extension of gingival inflammation
Trauma from occlusion
Systemic disorders

Question 2

How does gingival inflammation enter the alveolar bone?

Answer 2

1) It extends along the collagen fiber bundles
2) Follows the course of the blood vessels
3) It enters the alveolar bone

Question 3

If teeth are >2.5mm apart, what type of osseous defect do we get?

Answer 3

Vertical

Question 4

If teeth are

Answer 4

Horizontal

Question 5

Bone loss due to periodontal disease is caused by what?

Answer 5

Loss of physiologic bone equilibrium

Bone loss in perio disease occurs when destruction overtakes formation

Question 6

T/F - Bone formation always occurs in areas of bone resorption

Answer 6

True

Question 7

Random burst model of disease progression

Answer 7

Disease is episodic

There are periods of exacerbation and remission of bone loss

Question 8

When does buttressing bone form?

Answer 8

It is a growth of bone that attempts to “support” weak bony trabeculae

Question 9

Central buttressing bone formation

Answer 9

Occurs within the jaw

Difficult to see clinically

Question 10

Peripheral buttressing bone formation

Answer 10

Occurs on the external surface of the jaw
Creates a deformity in the overlying mucosa
Looks like a ledge
Severe plaque trap

Question 11

What does horizontal bone loss lead to?

Answer 11

Suprabony pocket

Question 12

What does angular bone loss lead to?

Answer 12

Infrabony pocket

Question 13

What determines what type of surgery we do?

Answer 13

The type of infrabony defect

Question 14

F0

Answer 14

No furcation involvement

Question 15

F1

Answer 15

Can feel concavity - not catching yet

Question 16

F2

Answer 16

In the concavity - in this furcation, we try to do regenerative surgery

Question 17

F3

Answer 17

Through and through

At this point it is too late to do surgery

Question 18

What is the goal of treatment with Horizontal Bone Loss?

Answer 18

Pocket reduction

Correct reverse architecture

Question 19

What are the treatment options for Horizontal Bone loss?

Answer 19

SRP
Gingivectomy
Open flap debridement
Osseous surgery

Question 20

What are the treatment goals with Angular bone loss?

Answer 20

Pocket reduction

Restoration of attachment

Question 21

What are the treatment options for Angular bone loss?

Answer 21

Osseous Surgery

Guided Tissue Regeneration

Question 22

What are the treatment goals of Furcation defects?

Answer 22

Eliminate furcation defects

Provide self-cleaning area

Question 23

What are the treatment options of Furcation defects?

Answer 23

SRP
Open Flap Debridement
Osseous Surgery
Guided Tissue Regeneration

Question 24

What type of flap is used with Osseous Surgery?

Answer 24

Full thickness

Apically positioned

Question 25

What type of flap is used with Regenerative Surgery?

Answer 25

Full thickness

Coronally positioned

Question 26

What type of incision is used with Osseous Surgery?

Answer 26

Generally scalloped (but sulcular is used if keratinized tissue is limited)
Additional incisions can be made if needed to apically position

Question 27

What type of incision is used with Regenerative Surgery?

Answer 27

Sulcular

Additional vertical incisions can be used if needed to coronally position