Vocab

Question 1

all the pink stuff is called?

Answer 1

gingiva

Question 2

oral mucosa includes

Answer 2

• gingiva and hard palate
• dorsum of tongue (top of tongue- dorsal fin of dolpins)
• mucus membrane lining of oral cavity

Question 3

periodontium includes what 4 things?

Answer 3

alveolar bone
periodontal ligament (PDL)
cementum
gingiva

Question 4

periodontium has morphologiic and ____ variations that CHANGE WITH AGE

Answer 4

functional

Question 5

what is the periodontal attachment apparatus?

Answer 5

what attaches tooth to mouth

Question 6

periodontal attachment apparatus consists of?

Answer 6

cementum, PDL, alveolar bone.

*Purpose is to anchor tooth into alveolar bone

Question 7

3 types of gingiva?

**all of them share what purpose?

Answer 7

1) marginal (free) gingiva
2) attached gingiva
3) interdental gingiva
* *all are structured to function against mechanical and microbial damage

Question 8

marginal (free) gingiva

Answer 8

forms soft tissue wall of gingival sulcus (between colar and skin)
*‘collar’ around tooth

Question 9

attached gingiva

• primary protection against?
• width is important for?

Answer 9

firm, resilient, tightly bobund to underlying periosteum

• extands to mucogingival junction (MGJ)
• primary protection against mastication
• width is important for clinical parameter

Question 10

interdental gingiva

Answer 10

between the teeth (M-D direction)

*NOT bound to bone

Question 11

normal gingiva in adults

Answer 11

covers alveolar bone and root to a level just coronal to the CEJ
*it’s the ‘pink stuff’

Question 12

define gingival sulcus?

Answer 12

• shallow crevice around tooth

- bound by tooth and sulcular epithelium****

Question 13

the periodontal probe measures?

Answer 13

the depth of the sulcus

Question 14

hard palate has NO _____ junction

Answer 14

mucogingival junction

Question 15

define mucogingival junction?

Answer 15

junction between attached gingiva (firmly bound and keratinized) and alveolar mucosa (loosely bound and NON-keratinized)
–located by a scalloped line of color contrast

Question 16

what gingivas are keratinized?

Answer 16

marginal and attached

Question 17

collagen type 1 vs elastic vs reticular fibers

Answer 17

collagen type 1= holds marginal tissue, stregnth for chewing

elastic AND oxytalan fibers= movable; cheeks and lips

reticular fibers= next to basment membrane, BV

Question 18

Gingival fiber groups

Answer 18

1) dentogingival= tooth to gingiva
2) circular= around apex, within marginal and interdental gingiva
3) transseptal= up and over bone to bone;horizontal bundles extending interproximally from cementum to cementum
4) dentoperiosteal= dentin to bone

Question 19

PDL fiber groups

Answer 19

transseptal
alveolar crest
horizontal
apical
interradicular
oblique

Question 20

submucosa is found where?

**contains what?

Answer 20

beneath mucous membrane; found on PALATE

**contains salivary glands and fat

Question 21

what has NO submucousa?

Answer 21

gingiva

Question 22

active vs passive eruption

Answer 22

active= continuous throughout life
- supra-eruption

passive=apical migration of JE
-periodontal disease

Question 23

stippling

Answer 23

attached gingiva stipples in health

Question 24

PDL

Answer 24

• CT that connects cementum to alveolar bone
• purpose to support tooth
• complex vascular system
• devel from dental sac
• radiographically visible

Question 25

Why would width of PDL change?

Answer 25

normal = 0.1-0.25mm * age= narrows * hyper-function= widens

Question 26

sharpey's fibers

Answer 26

collagen bundles | -terminal ends of principle fibers that insert into bone and cementum

Question 27

collagen

Answer 27

- synthesized from fibroblasts, chondroblasts - flexible and strong - maintains the tone of the tissue

Question 28

arterial supply to teeth

Answer 28

interdental alveolar artery= enters at crest and ends in the gingiva Interseptal artery= enters the interdental and interradicular septa

Question 29

arterial supply to MD and MX

Answer 29

MD= inferior alveolar artery and MX= superior alveolar artery **Both: dental artery (tooth); interseptal artery (PDL); terminal branches in bone; lamina dura; gingiva

Question 30

periodontiam nerve supply

Answer 30

5th CN

Question 31

T/F... cementum is avascular?

Answer 31

true

Question 32

cellular or acellular cementum is formed first?

Answer 32

acellular | *cellular cementum is formed after the tooth reached occlusal plane

Question 33

afibrillar vs acellular fibrillar cementum?

Answer 33

* afibrillar- extends to CEJ onto enamel | * acellular fibrillar- more common, found on cervical 1/3 of root, sometimes found more apically

Question 34

when does deposition happen? where?

Answer 34

continuous throughout life; most rapid in apical region (compensate for eruption)

Question 35

cementum thickness increase ___x with age

Answer 35

3x | increase thickness, decrease permeability

Question 36

origin of cementum?

Answer 36

Hertwig's sheath?

Question 37

cementicles vs cementoma

Answer 37

* cementicles= globular masses of cementum; adhere to root | * cementoma= benign tumor; common in females

Question 38

define alveolar bone proper

Answer 38

compact thin bone of inner socket - seen as lamina dura - series of openings (cribiform plate)

Question 39

basal bone of jaw?

Answer 39

does not affect teeth

Question 40

endo or exotoxins cause damage to epithelial cells and CT?

Answer 40

endotoxins

Question 41

bone level follows a line connecting?

Answer 41

the CEJs of adjacent teeth