Periodontium

Question 1

Components of periodontium

Answer 1

Gingiva
Pdl
cementum
Alveolar bone

Question 2

What gingiva is keratinized

Answer 2

attached gingiva

Question 3

Attached gingiva extends from

Answer 3

mucogingival junction to gingival groove

Question 4

Free gingiva extends from

Answer 4

gingival sulcus to gingival groove

Question 5

Appearance of healthy gingiva

Answer 5

coral pink
dull
firm

Question 6

Healthy gingival margin depth

Answer 6

1.5-2mm

Question 7

Types of pdl

Answer 7

Based on orientation:

1) Alveolar crest fibers
2) horizontal fibers
3) oblique fibers
4) apical fibers

Question 8

sharpey’s fibers

Answer 8

portion of pdl embedded in cementum and alveolar bone proper

Question 9

Characteristics of cementum

Answer 9

No blood vessels
No lymph vessels
No innervatoin
No physiologic resorption/remodeling

Continuing deposition throughout life
collagen fibers in organic matrix
high mineral content (65%) mainly HA

Question 10

Dehiscence

Answer 10

Bone loss from CEJ to root

Question 11

Fenestration

Answer 11

Small portion of bone loss

Question 12

Cortical vs cancellous bone

Answer 12

Cancellous has visible holes

Question 13

Gingivitis

Answer 13

inflammation of gingiva

Question 14

Periodontitis

Answer 14

inflammation extending to periodontal ligament and bone

Question 15

How should normal bone levels look radiographically

Answer 15

no radiolucency

Extend to nearly CEJ

Question 16

scale for measuring gingival recession

Answer 16

(-): gingiva covers CEJ
0: gingiva at CEJ
(+): gingiva apical to CEJ [exposed root]

Question 17

furcation grades

Answer 17

I: incipient
II: definite catch
III: through and through