quiz on alveolar process and pdl

Question 1

part of the bony maxilla and mandible that supports the teeth

Answer 1

alveolar process

Question 2

the other part of the bony maxilla or mandible that is apical to the roots of the teeth is called

Answer 2

basal bone

Question 3

existence of presence of alveolar bone is dependent on the presence of

Answer 3

dental roots

Question 4

when teeth are extracted, alveolar bone will generally

Answer 4

resorb in edentulous area

Question 5

what helps preserve the integrity of bone and provide permanent place of a lost tooth

Answer 5

implant

Question 6

what cells are in alveolar bone

Answer 6

osteoblast, cytes clasts

Question 7

what fibrous matrix in alveolar bone

Answer 7

collagen(main) calcified by deposition of calcium hydroxyapetite

Question 8

ground substance of alveolar bone

Answer 8

proteoglycans

Question 9

alveolar bone proper is the

Answer 9

lining of the tooth socket or alveolus

Question 10

compact bone(cortical bone) contains

Answer 10

haversian system

Question 11

what is the outer cortical plate make up

Answer 11

face, cheek, lip, buccal

Question 12

what does the inner cortical plate make up

Answer 12

face, tongue, palate, lingual

Question 13

cancellous or spongy bone called

Answer 13

trabecular bone

Question 14

sandwiched between cortical plates

Answer 14

cancellous bone

Question 15

composed of trabecular bone separated by bone marrow

Answer 15

cancellous bone

Question 16

alveolar bone proper also called alveolus is made of

Answer 16

compact bone

Question 17

faces the root of the tooth and follows the general outline of the tooth

Answer 17

alveolar bone proper

Question 18

the most cervical rim of the alveolar bone proper

Answer 18

alveolar crest

Question 19

another names for alveolar bone proper

Answer 19

cribiform plate or bundle bone

Question 20

sharpeys fibers insert into alveolar bone or cementum at

Answer 20

90 degree angle or right angle

Question 21

alveolar bone proper contains small numerous openings that allows _____ _____ and _____ in the pdl and bone to communicate

Answer 21

blood vessels; nerves

Question 22

radiographic term; radiopacity occurs in alveolar bone proper area

Answer 22

lamina dura

Question 23

geometry of the area; possibly the orientation of crystals around the attached fiber bundles

Answer 23

lamina dura

Question 24

alveolar bone is easily remodeled(allows tooth movement)

Answer 24

tooth movement

Question 25

tooth movement involves major remodeling of the _______ to compensate for root growth, facial growth, and changes in positional relations of the primary and permanent teeth

Answer 25

alveolar process

Question 26

allows for extra space, small permanent premolars replace larger primary molars

Answer 26

accomodation occurs as the leeway space

Question 27

also called physiological drift; natural movement in which all the teeth move toward midline overtime

Answer 27

mesial drift

Question 28

tooth moving in occlusal direction occurs when there is no opposing tooth; extracted tooth can cause both supereruption and mesial drift

Answer 28

supereruption or occlusal drift

Question 29

artificial movement

Answer 29

orthodontic

Question 30

occurs in the direction the tooth is being moved

Answer 30

bone resorption

Question 31

the compression stimulates ____ to resorb bone

Answer 31

osteoclasts

Question 32

when there is tension on the pdl on the opposite surface of the root occurs, there is an increase in number of

Answer 32

fibroblasts, osteoblasts, and cementoblasts to form new structures

Question 33

occurs when compression is too great or too rapid

Answer 33

hyalinization of the pdl

Question 34

where may bone loss occur

Answer 34

bony surface of the socket, on cementum of the root surface or both- can be reversed by deposition of bone and cementum in the are of resorption-area of reversal

Question 35

during chronic periodontal disease or periodontitis(disease that affects periodontium)

Answer 35

bone tissue is lost

Question 36

where is bone loss first noted?

Answer 36

alveolar crest and slowly continues down alveolar bone

Question 37

with periodontal disease, the toot becomes increasingly

Answer 37

mobile and tooth loss becomes possible

Question 38

two terms for bone loss

Answer 38

fenestration vs Dehiscence

Question 39

what is pdl

Answer 39

a dense ct located between alveolar bone proper and cementum

Question 40

pdl contributes to

Answer 40

the attachment of the tooth

Question 41

pdl develops from

Answer 41

dental follicle

Question 42

what two types of fibers from pdl

Answer 42

gingival fibers and principal fibers

Question 43

between fiber; loos ct, blood vessel and nerves

Answer 43

interstitial spaces

Question 44

cells of the pdl

Answer 44

fibroblast, mast, phagocytes, osteoclasts, cementoblasts, osteoctes, epithelial rests of mallasez

Question 45

most common and produce the fibrous matrix and ground substance(pdl)

Answer 45

fibroblasts

Question 46

responsible for bone resorption in pdl( in tooth movement and perio)

Answer 46

osteoclasts

Question 47

ground substance for pdl

Answer 47

proteoglycans

Question 48

fibrous matrix of pdl does what

Answer 48

distribute forces(exerted on tooth during mastication) and act as a shock absorber

Question 49

does pdl have a fast turnover rate?

Answer 49

yes

Question 50

surrounds roots of the tooth and anchors the tooth in the socket. organized in bundles based on their orientation and their function. sharpeys fibers

Answer 50

alveolodental ligament

Question 51

at the ends of principal fibers inserted into periodontium at 90 degree right angles

Answer 51

sharpeys fibers

Question 52

extended from the cervical cementum to the alveolar crest

Answer 52

alveolar crest fibers

Question 53

what is the 1st fiber effected when have perio?

Answer 53

alveolar crest fibers

Question 54

extends at right angles to the long axis of the root in a horizontal plane from the cementum to the alveolar bone

Answer 54

horizontal fibers

Question 55

found in cervical 1/3 of root or midroot(pdl)

Answer 55

horizontal fibers

Question 56

slants occlusally from the cementum to the alveolar bone(biggest group of fibers, starts at apical 2/3 of root

Answer 56

oblique fibers

Question 57

radiate from the apical cementum into the alveolar bone

Answer 57

apical fibers

Question 58

seen only in multirooted teeth; extends from cementum in furcation area of tooth to cemenum of other root superficial to interradicular septum

Answer 58

interradicular fibers

Question 59

fibers travel from the cervical cementum of one tooth and to the adjacent tooth over the alveolar bone between teeth;

Answer 59

interdental(transseptal)

Question 60

only on m and d surfaces, helps keep teeth in line; no bony attachments; toot to tooth

Answer 60

interdental (transseptal)

Question 61

located around the necks of teeth in the marginal gingiva

Answer 61

gingival fibers

Question 62

what are the gingival fibers (pdl)

Answer 62

circumferential(circular) dentogingival ligament alveologingival fibers dentoperiosteal

Question 63

encircles the most cervical part of the tooth

Answer 63

circumferential

Question 64

inserts in the cementum of the root and extends into marginal gingiva(tooth to gingiva)

Answer 64

dentogingival ligament

Question 65

extend form the alveolar crest and radiate coronally into the marginal gingiva(bone to gingiva)

Answer 65

alveologingival fibers

Question 66

course from the cementum (near cej) across the alveolar crest into the gingiva

Answer 66

dentoperiosteal

Question 67

interstitial spaces(can get crushed and damaged)

Answer 67

located between bundles of fibers appear in cross section and longitudinal planes carries vascular and neural structures can withstand masticatory forces

Question 68

a radiolucent area between the radiopaque alveolar bone proper and the radiopaque cementum

Answer 68

pdl appears as periodontal space

Question 69

how does periodontal space show on x ray

Answer 69

dark- not mineralized

Question 70

measurement of periodontal space

Answer 70

.4-.15 mm

Question 71

rich and developed vessels are found in

Answer 71

interstitial spaces (pdl)

Question 72

each tooth has a common blood supply. a small artery enters:

Answer 72

apical foramen-supplies pulp pdl- supplies areas all around the tooth alveolar bone

Question 73

pdl vessels are richly_____ with alveolar bone

Answer 73

interconnected

Question 74

width of the pdl is greater in ____ than___

Answer 74

young adults; old adults

Question 75

width of pdl is greater in ___ and ___ portions

Answer 75

cervical and midroot

Question 76

width is related to the

Answer 76

amount of function of the tooth(varies with functional forces on tooth and at different levels

Question 77

functions of pdl

Answer 77

supportive(support teeth) sensory and proprioceptive(abundance of nerves) nutritive(bv supply pdl, cementum, alveolar bone) maintenance(form and respond to environment)

Question 78

balls of cementum

Answer 78

cementicles

Question 79

leftover of hertwigs root sheath

Answer 79

epithelial rests of mallasez

Question 80

remnants of the root sheath that did not disintegrate; potential to become cystic

Answer 80

epithelial rests of mallasez

Question 81

can result in damage to the supporting apparatus of the tooth. can eventually lead to tooth loss

Answer 81

untreated periodontal disease

Question 82

first fiber of group to become lost during chronic periodontal disease

Answer 82

alveolar crest group

Question 83

the destruction of the pdl then proceedes where

Answer 83

apically( bone loss can be in furcation area)

Question 84

what are all the principal fibers

Answer 84

``` alveolar ligament horizontal fibers oblique fibers apical fibers interradicular fibers ```