quiz on lecture 6

Question 1

dental tissues pulp, dentin, and cementum are specialized forms of what major tissue type?

Answer 1

connective tissue

Question 2

epithelial components becomes the enamel ______

Answer 2

organ

Question 3

mouth epithelium and enamel comes from

Answer 3

ectoderm

Question 4

derived from neural crest cells and forms the dental papilla

Answer 4

mesenchyme

Question 5

derived from ectoderm and forms the enamel organ

Answer 5

oral epithelium

Question 6

the oral epithelium grows deeper into the mesenchyme =

Answer 6

dental lamina(filled with oral epithelium)

Question 7

shaping of the tooth

Answer 7

morphodifferentiation

Question 8

cells differentiation into specific tissue forming cells

Answer 8

cytodifferentiation

Question 9

enamel forming cells

Answer 9

ameloblasts

Question 10

cementum forming cells

Answer 10

cementoblast

Question 11

dentin forming cells

Answer 11

odontoblasts

Question 12

pulp forming cells

Answer 12

fibroblasts

Question 13

oral epithelium and the underlying mesenchyme are responsible for shaping a tooth, also called what

Answer 13

induction(1st stage)

Question 14

extensive proliferation of the dental lamina into buds. the condensed area of mesenchymal cells are continuous with the oral epithelium

Answer 14

bud stage

Question 15

the connection between the two layers(bud stage) is referred to as the

Answer 15

dental lamina(filled with oral epithelium)

Question 16

the epithelial tissue gains a concave surface(enamel organ); a portion of the mesenchyme deep to the buds has condensed into a mass within the concavity

Answer 16

cap stage

Question 17

(cap stage) the inner mass of mesenchyme is now called ____

Answer 17

dental papilla

Question 18

the dental papilla helps form the

Answer 18

dentin and pulp for inner portion of tooth

Question 19

the cementum, PDL and alveolar bone are formed from

Answer 19

dental follicle/sac

Question 20

the area around the dental papilla is

Answer 20

dental follicle /sac

Question 21

the enamel organ + dental papilla + dental follicle=

Answer 21

tooth germ(cap stage)

Question 22

in the bell stage, what are the organized layers of the enamel organ (4 cell types)

Answer 22

OEE, IEE, stellate reticulum, stratum intermedium

Question 23

in the bell stage, the dental papilla are divided into inner and outer cells =

Answer 23

inner cells, outer cells

Question 24

inner cells will form

Answer 24

pulp

Question 25

outer cells(aka peripheral cells) will differentiate into

Answer 25

odontoblasts(dentin)

Question 26

replaces primary teeth, something that permanent molars are NOT

Answer 26

succedaneous

Question 27

an overlapping period between primary and permanent dentition

Answer 27

mixed dentition

Question 28

resorbs bone

Answer 28

osteoclasts

Question 29

layering matrix; cells have differentiated into tissue forming cells. matrizes are all secreted

Answer 29

appositionally

Question 30

with maturation, these tissues fully

Answer 30

mineralize

Question 31

under cytodifferentiation, epithelial components become the enamel organ which is organized into 4 distinct layers

Answer 31

oee, iee, stratum intermedium, stellate reticulum

Question 32

what do the four layers of the enamel organ do?

Answer 32

all help produce enamel

Question 33

the outer cuboidal cells of the enamel organ

Answer 33

oee

Question 34

the innermost, tall, columnar cells of the enamel organ on the concave side

Answer 34

iee

Question 35

what will the iee of the enamel organ become?

Answer 35

will become the future enamel producing cells, the ameloblasts(preameloblasts)

Question 36

compressed cells that lie on top of the iee

Answer 36

stratum intermedium

Question 37

star shaped cells that fill the bulk of the enamel organ

Answer 37

stellate reticulum

Question 38

the mesenchymal components become subdivided into:

Answer 38

dental follicle, dental papilla

Question 39

surrounds the developing tooth germ and provides cells that will form the cementum, PDL, and alveolar bone

Answer 39

dental follicle

Question 40

condensed mesenchyme located on the concavity side of the enamel organ

Answer 40

dental papilla

Question 41

the outer cells(peripheral) will differentiate into dentin forming cells called

Answer 41

odontoblasts

Question 42

the center of the dental papilla (inner cells) will become the:

Answer 42

pulp

Question 43

between the oral epithelium and the mesenchyme. the mesenchyme instructs the epithelium to grow down into the mesenchyme and shape the tooth

Answer 43

1st interaction between epithelium and mesenchyme

Question 44

the 1st interaction is also called

Answer 44

initiation stage

Question 45

given by the cells of the IEE (preameloblasts) to the outer (peripheral) cells of the dental papilla to differentiate into odontoblasts to begin the deposition of dentin

Answer 45

2nd interaction

Question 46

as soon as odontoblasts begin to deposit dentin, preameloblasts become true-secreting ameloblasts and begin the deposition of enamel

Answer 46

3rd interaction

Question 47

occurs with the development of root dentin and cementum

Answer 47

4th interaction

Question 48

when does dentinogenesis begin(which interaction)

Answer 48

2nd interaction

Question 49

where dentin meets enamel

Answer 49

dentinoenamel junction (DEJ)

Question 50

tome’s process does what

Answer 50

secretes enamel matrix

Question 51

cells continue to make dentin how often?

Answer 51

as needed throughout life

Question 52

daily cycles of secretion and mineralization create what? (associated with dentinogenesis)

Answer 52

incremental lines called lines of von ebner

Question 53

each ameloblast has a secretory process, called what

Answer 53

tome’s process

Question 54

what is the structure responsible for root development

Answer 54

cervical loop(oee and iee meet)