Periodontium

Question 1

tissues that support the position of the tooth within the jaw

Answer 1

periodontium

Question 2

cementum is a ___________ tissue

Answer 2

mineralized

Question 3

the PDL is a ______ tissue

Answer 3

connective

Question 4

the alveolar process is a ________________ tissue

Answer 4

mineralized

Question 5

what is the composition of the alveolar process

Answer 5

60% hydroxyapatite and 25% type I collagen

Question 6

what types of bone are found in the alveolar bone

Answer 6

cortical/dense and trabecular/cancellous

Question 7

what does the alveoli house

Answer 7

the roots of the teeth

Question 8

lines each alveolus

Answer 8

alveolar bone proper

Question 9

makes up the rest of the alveolar process

Answer 9

supporting alveolar bone

Question 10

the supporting alveolar bone is composed of plates of __________ bone on the buccal and lingual surfaces and ___________ in between

Answer 10

cortical
trabecular

Question 11

what is alveolar bone proper composed of

Answer 11

cortical bone

Question 12

what is the alveolar bone proper seen as on radiographs

Answer 12

lamina dura

Question 13

the alveolar bone proper contains ________________ from the PDL

Answer 13

sharpey’s fibers

Question 14

covers and protects the root dentin

Answer 14

cementum

Question 15

cementum provides attachment for the _________

Answer 15

PDL

Question 16

cementum participates in maintenance of what

Answer 16

occlusion

Question 17

what is the composition of cementum

Answer 17

65% hydroxyapatite and 23% type I collagen

Question 18

development of cementum

Answer 18

cementogenesis

Question 19

what forms cementum

Answer 19

cementoblasts from ectomesenchymal cells in the inner portion of the dental follicle/sac

Question 20

what type of cementum is deposited first

Answer 20

acellular (primary)

Question 21

what part of the tooth does acellular primary cementum cover

Answer 21

root dentin

Question 22

does acellular primary cementum contain cementocytes

Answer 22

no

Question 23

where is cellular (secondary) cementum located

Answer 23

covering acellular cementum, typically in the apical 1/3

Question 24

does cellular secondary cementum contain cementocytes

Answer 24

yes in the lucunae

Question 25

what is type I collagen divided into

Answer 25

intrinsic fibers and extrinsic fibers

Question 26

what lays down intrinsic fibers of type I collagen

Answer 26

cementoblasts

Question 27

what type of fibers are sharpey’s fibers

Answer 27

extrinsic fibers

Question 28

is cementum vascular or avascular

Answer 28

avascular

Question 29

cementum is more resistant to what

Answer 29

resorption

Question 30

cementum and bone contain cells in lucunae with _________________ and __________________

Answer 30

canaliculi and type I collagen

Question 31

specialized connective tissue with groups of fibers

Answer 31

PDL

Question 32

the PDL attaches teeth to what

Answer 32

alveolar bone proper

Question 33

what does the PDL house

Answer 33

nerves and sources of blood supply

Question 34

where does the PDL form from

Answer 34

ectomesenchyme of dental follicle/sac

Question 35

main fiber group of the PDL with 5 subgroups

Answer 35

alveolodental ligament

Question 36

what are the 5 subgroups of the alveolodental ligament

Answer 36

alveolar crest, horizontal, oblique, apical, and interradicular

Question 37

connects teeth to each other

Answer 37

interdental ligament

Question 38

what is included in the gingival fiber group

Answer 38

dentogingival, dentoperiosteal, circular, and alveologingival

Question 39

gingiva to alveolar crest

Answer 39

alveologingival

Question 40

gingiva to cementum

Answer 40

dentogingival

Question 41

cementum to periosteum

Answer 41

dentoperiosteal

Question 42

surrounds tooth

Answer 42

circular