Exam 1; Anatomy of the Periodontium Flashcards Preview

AU14 Periodontology > Exam 1; Anatomy of the Periodontium > Flashcards

Flashcards in Exam 1; Anatomy of the Periodontium Deck (50)
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1

What are the four things that compose the periodontium

gingiva
periodontal ligament
root cementum
alveolar bone

2

What are the two endings of the PDL called

bundle bone when attached directly to bone
Sharpay's fibers when attached to cementum

3

What are the two functions of the periodontium

attach the tooth to bony tissue of the jaw
maintain integrity of the masticatory mucosa

4

The cells that develop into the periodontium originate from where

neural crest (neural tube)

5

The stoma deal epithelium releases factors which initiate what

epithelial-ectomesenchymal interactions

6

What two structures does the dental papilla give rise to

the dentin and pulp

7

What structure does the dental follicle give rise to

the periodontium

8

This structure determines the shape and form of the tooth

dental papilla

9

Why do you not bleed upon eruption of the teeth?

because the tooth follows an epithelium lined canal with no vessels

10

This gives rise to the junctional epithelium

reduced enamel epithelium

11

The inner cells of the root sheath secrete what

enamel-related proteins; amelogenins

12

What is the role of amelogenins

it induces differentiation of ectomesenchymal cells of the folic contacting root surface to differentiate into cementoblasts

13

This is formed by fibroblasts that are differentiated from the dental follicle lateral to the cementum

periodontal ligament

14

These differentiate from dental follicle ectomesenchymal cells

osteoblasts (alveolar bone proper)

15

True or False
Ectomesenchymal cells do not remain in the mature periodontium

False; they do and participate in turnover (cementoblasts, osteoblasts, fibroblasts)

16

This is the part of the masticatory mucosa which covers the alveolar process and surrounds the cervical portion of the teeth

gingiva

17

What are the three parts of the gingiva

free gingiva
attached gingiva
interdental papilla

18

This extends from the free gingival margin to the free gingival groove

free gingiva

19

What type of epithelium is the free gingiva composed of

keratinized epithelium

20

This is the coronal end of the gingiva; located 1.5-2mm coronal to the CEJ

free gingival margin

21

This is the junction between the free and attached gingiva corresponding to the CEJ; only found in 30-40% of adults

free gingival groove

22

This gingival epithelium faces the oral cavity

oral epithelium

23

This gingival epithelium faces the tooth surface without contacting it

oral sulcular epithelium

24

This provides contact between the gingiva and the tooth

junctional epithelium

25

This is the source of the oral sulcular epithelium

oral epithelium

26

What is the microscopic limits of the free (marginal) gingiva

extending from the FGM to the JE

27

What is the macroscopic limits of the free (marginal) gingiva)

extending from the FGM to the FGG

28

Having a firm texture, coral pink in color, and immobile are all properties of what

attached gingiva

29

What can cause the width to vary regarding the attached gingiva, and where is it the widest/narrowest

increases with age
widest in incisors; narrowest in premolars
mandibular lingual; narrowest in incisors, widest in molars

30

These are small depressions on the attached gingiva; present in only 40% of adults

stippling