exam 2 questions

Question 1

causes pre-odontoblasts to line up align basal lamina

Answer 1

fibronectin

Question 2

found in odontogenic zone

Answer 2

odontoblast cell layer
cell free zone
cell rich zone
parietal plexus (raschkow’s plexus)

Question 3

found in pulpal core

Answer 3

fibroblasts
type I and III collagen
extracellular matrix
blood vessels
nerve tissue

Question 3

each fiber gives ____branches to raschow’s plexus

most fibers are ___________ nerve endings

Answer 3

free unmyelinated nerve endings

Question 4

tomes granular layer is comprised on

Answer 4

hypomineralized interglobular dentin

Question 4

clinical case with cupped occlusal surfaces, defects on lingual enamel and exposed dentin

Answer 4

erosion
ask if they eat acidic foods

Question 4

cementicles can be _____, _____ or ________
and the number of them ______ with increasing age

Answer 4

embedded attached free
increase

Question 5

what causes gingival cysts

Answer 5

rests of serres

Question 6

where is cementum thinnest:

thickest:

Answer 6

CEJ

thickest: apex

Question 7

what fibers give fast sharp localized pain:

dull pain:

Answer 7

sharp: a-delta
dull: c fibers

Question 8

sympathetic branches are from

Answer 8

superior cervical ganglion

Question 9

what nerve provides sensory afferent innervation

Answer 9

trigeminal

Question 10

where are interradicular fibers found:

function:

Answer 10

in multirooted teeth
function=resist vertical and lateral force

Question 11

lateral periodontal cyst arise from

Answer 11

epithelial rests of malassez

Question 12

which is more calcified

peritubular or intertubular

Answer 12

peritubular more
intertubular less

Question 13

mature odontoblasts can make _____ dentin. damage to these cells cause subodontoblastic stem cells to differentiate and make _________

Answer 13

secondary dentin

teritary dentin

Question 14

case study: insert tooth back in alveolar bone
what reparative cell mechanism is most likely to happen?

significant-

slight-

Answer 14

alveolar bone secretes cells and fuses cementum to one

significant= ankylosis (severe)
slight- undiff cells from PDL regenerate tissue and PDL restored

Question 15

case study: pt comes in after crown is plaed and has inflammed gums. there is .5mm distance what do you tell them

Answer 15

the biological width has been compromised

Question 16

T/F: Raschkow’s plexus does NOT form before roots are completely developed

Answer 16

false

Question 17

presence of carbonate apatite core in enamel is more soluble to _____ and what can replace the hydroxyl ions and less susceptible to acid dissolution?

Answer 17

acid

fluoride

Question 18

fibers responsible for resisting rotation

Answer 18

all PDL fibers

Question 19

resist vertical force

Answer 19

apical

Question 20

resist intrusive force

Answer 20

oblique

Question 21

resist horizontal and tipping force

Answer 21

horizontal

Question 22

resist vertical and lateral force

Answer 22

interadicular (between roots)

Question 23

resist tooth separation

Answer 23

transseptal

Question 24

resist gingival displacement

Answer 24

dentogingival alveologingival circumferential semicircular

Question 25

resist tooth separation and gingival displacement

Answer 25

semicircular

Question 26

steps of wound healing

Answer 26

1. undiff cels migrate to area and macrophages/PMN's remove damaged tissue 2. fibroblasts/osteoblasts replace damaged tissue 3. mast cell response -heparin/histamine released

Question 27

patient presents to you with this case -complain of pain and you deduce that the tooth is mobile what is accountable for this mobility?

Answer 27

due to occlusal trauma, resorption of alveolar bone parallel to long axis of tooth

Question 28

how would a quick inflammatory response occur in the pulp horn

Answer 28

thru fenestrated capillaries

Question 29

schwann cells provide myelination for what axons

Answer 29

a-delta and a-beta

Question 30

mesial movement of premolar during ortho treatment causes what to mesial and what to distal

Answer 30

mesial: mesial compression and resorption of bone distal: tension and bone deposition

Question 31

T/F 1. dental pulp collagen is the largest EC component making up 25-32% 2. most prevalent is type I and III collagen

Answer 31

1 is true and 2 is false because type III is most prevalent

Question 32

sympathetics cause

Answer 32

vasoconstriction

Question 33

what are the 2 cementocytes:

Answer 33

lacunae and canaliculi

Question 34

what houses cell bodies

Answer 34

lacunae

Question 35

what prodives communication and have cytoplasmic projections

Answer 35

canaliculi

Question 36

3 things exposed cementum does

Answer 36

1. hypermineralized (prevents reattachment of collagen) 2. attachment of plaque and calc 3. endotoxin absorption

Question 37

what is a characteristic of the vermillion border

Answer 37

blood vessels, close to surface

Question 38

remove boney thing from buccal surface of 3, you then drain blood from alveolar bone and apply a sheet -prevents what cells fro healing injury? what heals area instead?

Answer 38

prevents epithelial cells allows PDL to heal

Question 39

differentiation of cementum is initiated with: what then induces the differentiation process

Answer 39

disruption of hertwig's root sheath allowing undiff cells to make contact with dentin dentin matrix growth factors induce process (BMG, FGF, BMP, DMP)

Question 40

T/F 1. dentinogenesis imperfecta is characterized by blueish gray teeth. 2. enamel is affected just like dentin

Answer 40

1. true 2. false- enamel is not affected but is chipped off

Question 41

in what disease are pulp chambers and canals generally obliterated by defective dentin formation

Answer 41

dentinogenesis imperfecta

Question 42

T/F 1. tertiary dentin is released immediately in response to outside forces 2. it is laid down in clean fashion

Answer 42

1. true 2. false

Question 43

dentin tubules tapered. largest at: smallest at: where are there more dentin tubules? less?

Answer 43

largest at dental pulp thinnest at DEJ more at pulpal surface and less at DEJ

Question 44

dental matrix proteins:

Answer 44

-Gla proteins -help mineralize hydroxyapatite -controlling size of hydroxyapatite crystals