Chapter 10: Gingival and Dentogingival Junctional Tissue

Question 1

What is the attached gingiva

Answer 1

Tissue that is tightly adhered to the bone around roots of teeth

Question 2

What is the interdental papillae/interdental gingiva

Answer 2

gingival tissue between adjacent teeth

Question 3

What is the Col

Answer 3

vallylike depression in the portion of interdental gingiva that lies directly apical to contact area

falls apical to the contact area

Question 4

What type of mucosa is attached gingia

Answer 4

masticatory ucosa

Question 5

What is the pigment of healthy attached ginigva

Answer 5

Pink with areas of melanin pigmentation

Question 6

Describe the gingiva when it is dry

Answer 6

dull, firm, immobile, with varying amounts of stippling

Question 7

Marginal gingiva varies in width from _____ from what?

Answer 7

0.5 to 2.0mm from the free gingival crest to attached gingiva

Question 8

What does the free gingival groove do?

Answer 8

Separates the attached gingiva from the marginal gingiva

Question 9

What is a characteristic of free gingiva

Answer 9

it has a slight depression on the outersurface

Question 10

What type of layer does attached gingiva have

Answer 10

parakeratinized stratified squamous epithlium

Question 11

What type of tissue does lamina propria have

Answer 11

tall, narrow connective tissue papillae

Question 12

What is the lamina propria attached to and what does it cause?

Answer 12

directly attached to underlying bony jaws, makes the attached gingiva firm and immobile

Question 13

Why is col nonkeratinized

Answer 13

Because it is located inbetween the teeth so it does not touch food; does not require reinforced protection like the other tissue, less exposure to bacteria

Question 14

What type of epithelium does marginal gingiva have

Answer 14

orthokeratinized statified squamous epithelium

Question 15

Where is marginal gingiva attached, resulting in what characteristics of the tissue?

Answer 15

Not attached to bony alveolar process; makes tissue firm but mobile

Question 16

Where is the gingival fiber group (PDL) located

Answer 16

In the lamina propria of marginal gingiva

Question 17

What are the signs of gingivitis

Answer 17

acute/chronic inflammation with formation of edem
Increase number of WBC
Epithelial ulceration with tissue thinning

Question 18

What happens to marginal gingiva and attached gingival during active periodontal disease

Answer 18

marginal gingiva and attached gingival become enlarged, especially the interdental papillae

Question 19

What does edema cause

Answer 19

spongy enlargement, occurs in lamina propria of tissue; caused by inflammatory response

Question 20

What is gingival hyerplasia

Answer 20

Permanent fibrous enlargement with gingival margin becoming more coronal

Question 21

What are two causes of gingival hyperplasia

Answer 21

intake of certain drugs
associated poor homecare

Question 22

What can gingival recession be a result of?

Answer 22

periodontal disease

Question 23

What is dentogingival junction

Answer 23

junction between tooth surface and gingival tissue

Question 24

What makes up the dentogingival junction tissue

Answer 24

sulcular epithelium and junctional epithelium

Question 25

What does the sulcuar epithelium create?

Answer 25

stands away from tooth
creates gingival sulcus (space) that is filled with gingival crevicular fluid (GCF)

Question 26

What is the depth measurement of healthy gingival sulcus?

Answer 26

0.5 - 3 mm (average is 1.8mm)

Question 27

What does the junctional epithelium do?

Answer 27

Lines the floor of gingival sulcus

Question 28

Where is the junctional epithelium attached to

Answer 28

attached to tooth surface by way of an epithelial attachement

Question 29

Where is the junctional epithelium attached to

Answer 29

attached to tooth surface by way of an epithelial attachment

Question 30

When do ameloblasts secrete basal lamina

Answer 30

before eruption and after enamel maturation

Question 31

What serves as the primary epithelial attachment?

Answer 31

basal lamina secreted by ameloblasts on tooth surface

Question 32

What happens to the surrounding oral epithelium during tooth eruption

Answer 32

the coronal part of fused tissue (consists of REE) peels back off the crown (like a banana peel)

Question 33

What layers is reduced enamel epithelium made of

Answer 33

layer of ameloblasts and adjacent layer of cuboidal cells (outer enamel epithelium) from dental lamina

Question 34

What happens to the REE as eruption occurs

Answer 34

it degenerates

Question 35

What is the marginal gingiva (free gingiva)

Answer 35

tooth is continous with attached gingiva

Question 36

characteristic s of marginal gingiva

Answer 36

lacks stippling, tissue is mobile

Question 37

Width of marginal gingiva

Answer 37

0.5 - 2.0 mm from free gingival crest to attached gingiva

Question 38

What pattern does marginal gingiva follow

Answer 38

scalloped pattern

Question 39

What causes the pattern of the marginal gingiva

Answer 39

established by the contour of cementoenamel junction of teeth

Question 40

What type of mucosa is the marginal gingiva

Answer 40

masticatory mucosa

Question 41

important terms