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oral embryology > quiz on alveolar process and pdl > Flashcards

quiz on alveolar process and pdl Flashcards

1
Q

part of the bony maxilla and mandible that supports the teeth

A

alveolar process

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2
Q

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

A

basal bone

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3
Q

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

A

dental roots

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4
Q

when teeth are extracted, alveolar bone will generally

A

resorb in edentulous area

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5
Q

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

A

implant

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6
Q

what cells are in alveolar bone

A

osteoblast, cytes clasts

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7
Q

what fibrous matrix in alveolar bone

A

collagen(main) calcified by deposition of calcium hydroxyapetite

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8
Q

ground substance of alveolar bone

A

proteoglycans

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9
Q

alveolar bone proper is the

A

lining of the tooth socket or alveolus

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10
Q

compact bone(cortical bone) contains

A

haversian system

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11
Q

what is the outer cortical plate make up

A

face, cheek, lip, buccal

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12
Q

what does the inner cortical plate make up

A

face, tongue, palate, lingual

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13
Q

cancellous or spongy bone called

A

trabecular bone

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14
Q

sandwiched between cortical plates

A

cancellous bone

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15
Q

composed of trabecular bone separated by bone marrow

A

cancellous bone

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16
Q

alveolar bone proper also called alveolus is made of

A

compact bone

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17
Q

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

A

alveolar bone proper

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18
Q

the most cervical rim of the alveolar bone proper

A

alveolar crest

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19
Q

another names for alveolar bone proper

A

cribiform plate or bundle bone

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20
Q

sharpeys fibers insert into alveolar bone or cementum at

A

90 degree angle or right angle

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21
Q

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

A

blood vessels; nerves

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22
Q

radiographic term; radiopacity occurs in alveolar bone proper area

A

lamina dura

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23
Q

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

A

lamina dura

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24
Q

alveolar bone is easily remodeled(allows tooth movement)

A

tooth movement

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25
Q

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

A

alveolar process

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26
Q

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

A

accomodation occurs as the leeway space

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27
Q

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

A

mesial drift

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28
Q

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

A

supereruption or occlusal drift

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29
Q

artificial movement

A

orthodontic

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30
Q

occurs in the direction the tooth is being moved

A

bone resorption

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31
Q

the compression stimulates ____ to resorb bone

A

osteoclasts

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32
Q

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

A

fibroblasts, osteoblasts, and cementoblasts to form new structures

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33
Q

occurs when compression is too great or too rapid

A

hyalinization of the pdl

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34
Q

where may bone loss occur

A

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

35
Q

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

A

bone tissue is lost

36
Q

where is bone loss first noted?

A

alveolar crest and slowly continues down alveolar bone

37
Q

with periodontal disease, the toot becomes increasingly

A

mobile and tooth loss becomes possible

38
Q

two terms for bone loss

A

fenestration vs Dehiscence

39
Q

what is pdl

A

a dense ct located between alveolar bone proper and cementum

40
Q

pdl contributes to

A

the attachment of the tooth

41
Q

pdl develops from

A

dental follicle

42
Q

what two types of fibers from pdl

A

gingival fibers and principal fibers

43
Q

between fiber; loos ct, blood vessel and nerves

A

interstitial spaces

44
Q

cells of the pdl

A

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

45
Q

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

A

fibroblasts

46
Q

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

A

osteoclasts

47
Q

ground substance for pdl

A

proteoglycans

48
Q

fibrous matrix of pdl does what

A

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

49
Q

does pdl have a fast turnover rate?

A

yes

50
Q

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

A

alveolodental ligament

51
Q

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

A

sharpeys fibers

52
Q

extended from the cervical cementum to the alveolar crest

A

alveolar crest fibers

53
Q

what is the 1st fiber effected when have perio?

A

alveolar crest fibers

54
Q

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

A

horizontal fibers

55
Q

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

A

horizontal fibers

56
Q

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

A

oblique fibers

57
Q

radiate from the apical cementum into the alveolar bone

A

apical fibers

58
Q

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

A

interradicular fibers

59
Q

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

A

interdental(transseptal)

60
Q

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

A

interdental (transseptal)

61
Q

located around the necks of teeth in the marginal gingiva

A

gingival fibers

62
Q

what are the gingival fibers (pdl)

A

circumferential(circular)
dentogingival ligament
alveologingival fibers
dentoperiosteal

63
Q

encircles the most cervical part of the tooth

A

circumferential

64
Q

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

A

dentogingival ligament

65
Q

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

A

alveologingival fibers

66
Q

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

A

dentoperiosteal

67
Q

interstitial spaces(can get crushed and damaged)

A

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

68
Q

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

A

pdl appears as periodontal space

69
Q

how does periodontal space show on x ray

A

dark- not mineralized

70
Q

measurement of periodontal space

A

.4-.15 mm

71
Q

rich and developed vessels are found in

A

interstitial spaces (pdl)

72
Q

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

A

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

73
Q

pdl vessels are richly_____ with alveolar bone

A

interconnected

74
Q

width of the pdl is greater in ____ than___

A

young adults; old adults

75
Q

width of pdl is greater in ___ and ___ portions

A

cervical and midroot

76
Q

width is related to the

A

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

77
Q

functions of pdl

A

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

78
Q

balls of cementum

A

cementicles

79
Q

leftover of hertwigs root sheath

A

epithelial rests of mallasez

80
Q

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

A

epithelial rests of mallasez

81
Q

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

A

untreated periodontal disease

82
Q

first fiber of group to become lost during chronic periodontal disease

A

alveolar crest group

83
Q

the destruction of the pdl then proceedes where

A

apically( bone loss can be in furcation area)

84
Q

what are all the principal fibers

A 
alveolar ligament
horizontal fibers
oblique fibers
apical fibers
interradicular fibers

oral embryology (10 decks)

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