Exam 1; Applied Anatomy of the Periodontium

Question 1

In health, the probe penetrates to which landmark

Answer 1

the free gingival groove

Question 2

In disease, the probe penetrates to which landmark

Answer 2

past junctional epithelium into connective tissue

Question 3

What is a pseudo pocket?

Answer 3

The pushing down of the soft inflamed gingiva; the JE is still at the CEJ (no gingival stop)

Question 4

Diagnosis of periodontitis is based upon what

Answer 4

attachment loss, not probe depths

Question 5

Periodontitis occurs when

Answer 5

when the junctional epithelium migrates apically down the root surface

Question 6

This is necessary for pocket formation

Answer 6

viable junctional epithelium

Question 7

What are the landmarks to measure pocket depth

Answer 7

from the CEJ to JE/pocket depth

Question 8

What three things shape the interdental papilla

Answer 8

the contact relationships between adjacent teeth
width of approximate tooth surfaces
course of CEJ

Question 9

This is a concavity in the interdental papilla seen in the contact areas of premolar/molar region

Answer 9

col

Question 10

What type of tissue makes up the col

Answer 10

non-keratinized epithelium (similar to JE)

Question 11

The position and dimensions of the contact area determine what

Answer 11

probe angulations in posterior teeth

Question 12

A width of keratinized tissue less that what predisposes to recession

Answer 12

2mm

Question 13

A narrow gingiva cannot protect from what

Answer 13

friction; cannot buffer against muscle pull

Question 14

A narrow gingiva facilities sub gingival plaque formation via which three mechanisms

Answer 14

mobile tissue causes pocket to open
facilitates food impaction
impedes oral hygiene

Question 15

True or False

Narrow gingiva has the same resistance to attachment loss as wide gingiva

Answer 15

True

Question 16

What are four characteristics of a thin phenotype

Answer 16

increases recession
more vulnerable to trauma
more inflammation
less favorable treatment outcome

Question 17

When would you recommend gingival grafts

Answer 17

when recession causes symptoms; caries, esthetic concerns, progressive recession, sensitivity
subgingival restoration margins on thin biotype
pre-orthodontic therapy

Question 18

Is tissue differentiation in the adult organism influenced by environmental or genetic factors

Answer 18

genetically determined

Question 19

This determines epithelial characteristics

Answer 19

clinical translation

Question 20

This is the main grafting procedure now

Answer 20

connective tissue grafts

Question 21

This is seen in necrotizing ulcerative periodontitis

Answer 21

necrosis of the junctional epithelium; JE cells die = no pocketing; exposed bone

Question 22

What are the two parts of the soft tissue attachment to tooth

Answer 22

fibrous tissue

JE

Question 23

What is the biologic width of connective tissue attachment and epithelial attachment

Answer 23

CT = 1.06-1.08 mm
epithelial = 1.4 mm

Question 24

What is the average biologic width of the attachment apparatus

Answer 24

3 mm

Question 25

Distance from the CEJ to the alveolar crest is what

Answer 25

3mm

Question 26

The distance from crown margins to alveolar crest has to be what distance

Answer 26

3mm

Question 27

If the required 3mm distance is not there, what must be done

Answer 27

crown lengthening

Question 28

What two lineages of cells form the alveolar bone

Answer 28

cells from the dental follicle

cells independent of tooth development

Question 29

When does bone remodel

Answer 29

in response to forces and tooth movement

Question 30

What are the steps of wound dealing after an extraction

Answer 30

clot formation
wound cleansing via immune cells
new vasculature
provisional connective tissue
immature bone forms
bundle bone is resorbed
wound filled with woven bone
bone maturation

Question 31

Why is socket preservation important

Answer 31

for preserving bone morphology

Question 32

What is the principle behind guided tissue regeneration

Answer 32

epithelium grows faster than bone or connective tissue

Question 33

Epithelial exclusion will allow what

Answer 33

growth of cells