QUESTION 1
The dental lamina is induced to proliferate into a tooth bud by the
Basement membrane
Epithelial nerves
ecto mesenchyme
oral epithelium
QUESTION 2
What statement regarding the epithelial diaphragm is NOT true?
its plane remains horizontal during root formation
after dentine formation it's cells differentiate into cementoblasts.
it's growing tip is located coronally
it maintains a fixed distance from the basal part of the adjacent alveolar bone.
QUESTION 3
The reduced enamel epithelium joins with which layer to form Nasmyth's membrane?
enamel cuticle
enamel lemellae
enamel pellicle
oral epithelium
QUESTION 4
What process will not be associated with the primary tooth during exfoliation?
odontoclastic resorption of roots
odontoblastic repair of roots
development of the gubernacular canal
osteoclastic resorption of the inter-radicular septum.
QUESTION 5
Which of the following pairs of word regarding hard tissue genesis is mismatched?
dentine - mesoderm
enamel - ectoderm
bone - mesoderm
cementum - ectoderm
QUESTION 6
Prismless Enamel
is less mineralized than prismatic enamel.
is found only in the cervical area of permanent teeth
is harder than prismatic enamel
two of the above are correct
QUESTION 7
Dentine tubules
provide a pathway for unmyelinated nerve axons to the ADJ
are surrounded by a ring of hypomineralized peritublar dentine
always follow a straight course to the ADJ
contain processes that may extend into enamel as enamel spindles
QUESTION 8
Which cell is in greatest abundance in the tooth pulp?
odontoblasts
fibroblasts
lymphoid wandering cells
histocytes
reserve cells