Embryology + Histology Chapter 8-10 Test Flashcards
Ectoderm forms enamel with what cells
ameloblasts - form enamel organ
Mesoderm forms what 3 things
dentin, pulp, and cementum
Odontoblasts form what
dentin
cementumblasts form
cementum
cementum starts in the
dental sac
Fibroblasts form what in the dental papilla
pulp
histodifferentiation is the
specialization of cells, and differentiation of cells for tissue
Morphodifferentiation is the
changing shape and size of teeth
Eruption
tooth coming into functional position in oral cavity
Exfoliation
loss of primary teeth
Primary teeth are
baby teeth
Succedaneous teeth are
permanent teeth following a primary tooth
Primate spaces are located where
between baby teeth
what happens in the bud stage(initiation)
thickening of dental lamina for bud formation
What happens in the cap stage (proliferation)
development of enamel organ, dental papilla and dental sac
Where is stellate reticulum loacted
in the enamel organ
what happens in Bell stage (histo and morpho)
cells specialize and tooth changes shape and size
The DEJ (dentoemanel) is where
where dentin and enamel meet
The CEJ (cementoenamel) is where
where cementum and enamel meet right below gingiva
apposition is when the tooth ___
moves into position to prepare for eruption
Calcification occurs in which stage
Apposition
Odontogensis is the
formation of new teeth
Lamina dura is the
thin bone lining the socket
OsteClasts
resorb bone (resorption)
OsteoBlasts
build bone (deposition)
The stomodeum is known as the
primitive mouth
Teratogens are the
adverse environmental influences
fordyce granules (spots)
misplaced sebaceous glands
the most crucial stage in development is
the embryonic stage
what occurs during weeks 4-8
processes move to midline
Which teeth are first to develop
mandibular anterior teeth (4 incisors)
The primary palate is developed in week
5
Fusion of the palates occurs in weeks
8-12
Disruption in palate fusion can cause what
Cleft lip and palate
what is the hardest structure in the body
enamel
Hydroxyapetite is the
crystals inside enamel prisms and rods where minerals are deposited
an anatomical crown is considered the
enamel covered portion of crown
a clinical crown includes
anything showing up to gingiva, can have exposed root
Dentinal tubules are ___ in dentin
canals that hold fluoride
how do you feel sensation
through dental tubules
Dental fibres transmit ___
pain stimuli
Primary dentin is the
bulk of the tooth, prior to eruption
Secondary dentin
continues to grow and occurs after eruption