Odontogenesis Fc Mcq

Front 1

The structure depicted at
the arrow is a:
a) primary dental lamina
b) secondary dental lamina
c) successional lamina
d) vestibular lamina
e) extensional lamina

Back 1

c) successional lamina

Front 2

The “bud”, “cap” and “bell” stages of odontogenesis
refer to the shapes of the:
a) dental papilla
b) alveolar mesenchyme
c) oral mesenchyme
d) oral epithelium
e) alveolar bone

Back 2

d) oral epithelium

Front 3

The stellate reticulum is
located at which region?
a) a
b) b
c) c
d) d
e) e

Back 3

B

Front 4

Which of the following pairs is mismatched?
a) stellate reticulum – odontoblasts
b) enamel organ ‐ ameloblasts
c) dental follicle– cementoblasts
d) periodontal ligament ‐ fibroblasts
e) alveolar bone ‐ osteoclasts

Back 4

a) stellate reticulum – odontoblasts

Front 5

The space indicated by
the arrows is?
a) enamel matrix
b) membrana preformativa
c) stratum intermedium
d) pre‐dentin
e) dentin

Back 5

b) membrana preformativa

Front 6

The first MINERALIZED tissue to be deposited at the
dentin‐enamel junction (DEJ) is:
a) enamel
b) enamel matrix
c) dentin
d) pre‐dentin
e) dentin and enamel, simultaneously

Back 6

c) dentin

Front 7

The cells at the arrows
represent?
a) odontoblasts
b) ameloblasts
c) inner enamel epithelium
d) outer enamel epithelium
e) cementoblasts

Back 7

c) inner enamel epithelium

Front 8

Which of the following statements is FALSE?
a) enamel deposition occurs on a dentin substrate
b) the membrana preformativa defines the future DEJ
c) reciprocal epithelial‐mesenchymal interactions are
required for tooth development
d) pre‐dentin is deposited during the appositional stage
e) failure of the primary dental lamina to regress can
lead to formation of enamel pearls

Back 8

e) failure of the primary dental lamina to regress can
lead to formation of enamel pearls

Front 9

Which of the following
CANNOT be seen in this
image?
a) vestibular lamina
b) stellate reticulum
c) membrana preformativa
d) extensional lamina
e) preameloblasts

Back 9

d) extensional lamina

Front 10

During odontogenesis, neural crest cells do NOT
produce which cell type?
a) cementoblasts
b) ameloblasts
c) odontoblasts
d) osteoblasts
e) fibroblasts

Back 10

b) ameloblasts

Front 11

Which of the following
structures has been mislabeled?
a) stratum intermedium
b) dental papilla
c) membrana preformativa
d) outer enamel epithelium
e) stellate reticulum

Back 11

c) membrana preformativa

Front 12

Hertwig’s root sheath is comprised of?
a) inner enamel epithelium and stratum intermedium
b) stellate reticulum and stratum intemedium
c) outer enamel epithelium and stellate reticulum
d) inner enamel epithelium and odontoblasts
e) inner and outer enamel epithelium

Back 12

e) inner and outer enamel epithelium

Front 13

The arrowed cells
represent?
a) ameloblasts
b) odontoblasts
c) stellate reticulum
d) inner enamel epithelium
e) stratum intermedium

Back 13

e) stratum intermedium

Front 14

Which of the following INCORRECTLY describes
tooth root formation?
a) root formation is initiated after crown completion
b) root maturation may take up to three years
c) cells of Hertwig’s root sheath develop into root
odontoblasts
d) Hertwig’s root sheath defines the apical foramen
e) root dentin is deposited prior to cementum

Back 14

c) cells of Hertwig’s root sheath develop into root
odontoblasts

Front 15

What would NOT be found
at this stage of odontogenesis?
a) odontoblasts
b) osteoblasts
c) neural crest cells
d) enamel organs
e) dental follicles

Back 15

a) odontoblasts