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teeth develop from the interaction of _ tissues
in the primitive oral cavity
TERM 2
The 2 types of tissues that make up
teeth
DEFINITION 2
oral epithelial cells and mesenchymal cells
TERM 3
oral epithelial cells form
DEFINITION 3
the enamel organ and eventually enamel and intermediate
cementum
TERM 4
mesenchymal cells form
DEFINITION 4
the dental papilla and eventually dentin, cementum and pulp
TERM 5
Tooth development can be divided into _
stages
DEFINITION 5
The 7 stages of tooth development are
Initiation, Bud, Cap, Bell, Apposition, Maturation, Root
Development
TERM 7
The Initiation Stage begins at
the
DEFINITION 7
6th - 7th week in utero
TERM 8
At the _ week, the primitive oral cavity is
covered in _
DEFINITION 8
6th; ectoderm
TERM 9
The _ _ influence the oral epithelium to form
the _ _ and initiate _ _
DEFINITION 9
mesenchymal cells; dental lamina; tooth formation
TERM 10
the first sign of tooth formation is the
development of the _ _ from the oral
epithelium
DEFINITION 10
dental lamina
dental lamina AKA _ _ grows posteriorly as the
jaws grow
general lamina
TERM 17
the dental lamina functions until about the _
year when the _ _ form
DEFINITION 17
15th; third molars
TERM 18
The Bud Stage occurs at
about
DEFINITION 18
week 8
TERM 19
The Bud Stage is
DEFINITION 19
a rounded localized growth of cells surrounded by
mesenchyme
TERM 20
After the Bud Stage is the _ Stage
DEFINITION 20
Cap
The Cap Stage occurs
at
9th - 10th week
TERM 22
epithelial cells become
DEFINITION 22
enamel organ
TERM 23
mesenchymal cells form
DEFINITION 23
dental papilla
TERM 24
cells surrounding the enamel organ and
dental papilla are called
DEFINITION 24
dental follicles
TERM 25
during the Cap Stage
DEFINITION 25
the bud enlarges and forms a concave shape-still attached to
lamina
The four cell types in the enamel organ
are
outer enamel epithelial, inner enamel epithelial, stellate
reticulum, and stratum intermedium
TERM 32
The inner enamel epithelial cells conform to
the shape of the
DEFINITION 32
crown of the tooth they are forming
TERM 33
The inner enamel epithelial cells will become
DEFINITION 33
ameloblasts
TERM 34
These cells are star-shaped
DEFINITION 34
stellate reticulum
TERM 35
stellate reticulum cells
DEFINITION 35
attach the cells to each other - help support enamel function
stratum intermedium cells
lie adjacent to inner enamel epithelial cells - aid ameloblasts
in formation of enamel
TERM 37
during the Bell Stage, the outer cells of the
dental papilla become
DEFINITION 37
odontoblasts
TERM 38
during the Bell Stage, the inner cells of the
dental papilla become
DEFINITION 38
the pulp
TERM 39
during the Bell Stage, the dental sac (follicle)
DEFINITION 39
is surrounding the developing tooth and increases in collagen
content
TERM 40
After the Bell Stage is the
DEFINITION 40
Apposition Stage, which has various timing with each tooth
during the Apposition Stage, _ gradually
moves toward the pulp, leaving behind the _ _
odontoblast; odontoblastic process (housed in the dentinal
tubule)
TERM 47
predentin is laid down
DEFINITION 47
in increments
TERM 48
dentin formation begins at the _ _ and
progresses along the _ _
DEFINITION 48
cusp tips; dentinoenamel junction
TERM 49
during the Apposition Stage, the basement
membrane disintegrates
DEFINITION 49
bringing preameloblasts and predentin into contact
TERM 50
Together, predentin and preameloblasts
differentiate into
DEFINITION 50
ameloblasts
Tome's process
occurs during the Apposition Stage - ameloblasts lay down
enamel matrix on their side of the disintegrating basement
membrane
TERM 52
Dentinoenamel junction formation
DEFINITION 52
predentin and enamel matrix contact, mineralization of the
basement membrane occurs
TERM 53
how amelogenin (the protein in enamel
matrix) is produced
DEFINITION 53
nutrients pass though the stellate reticulum to the
ameloblasts and stratum intermedium
TERM 54
after the Apposition Stage is
the
DEFINITION 54
Maturation Stage
TERM 55
enamelin
DEFINITION 55
formed during the Maturation Stage - the mature, mineralized
protein of the enamel matrix
at the cervical area of the enamel organ, the
inner and outer epithelial cells join to form a
root sheath
TERM 62
when crown formation is complete the root
sheath continues to grow, forming the
DEFINITION 62
epithelial root sheath or Herwig's root sheath
TERM 63
The root sheath bends at about a _ degree
angle to form the _ _
DEFINITION 63
45; epithelial diaphragm
TERM 64
during root development, the cells of the
inner enamel epithelium induce the outer
cells of the dental papilla to differentiate into
_ and form _
DEFINITION 64
odontoblasts; dentin *these cells determine length,
curvature, thickness, and number of roots
TERM 65
as root dentin is formed, cells of the _ _ _
deposit _ _ onto the dentin
DEFINITION 65
inner enamel epithelium; intermediate cementum
intermediate cementum is a thin layer of _ _
that seals the end of the _ _
acellular cementum, dentinal tubules
TERM 67
outer enamel epithelium cells disperse into
small clusters and move away from the root
DEFINITION 67
epithelial rests
TERM 68
mesenchymal cells move between the
epithelial rests and root , differentiate into
DEFINITION 68
cementoblasts and deposit cementoid
TERM 69
cementoid
DEFINITION 69
quickly calcifies to form cementum
TERM 70
the root is lengthened by
DEFINITION 70
odontoblasts along the pulpal border and adjacent to the
epithelial diaphragm differentiating and proliferating
density of fibers increases as
occlusion is established
TERM 77
formation of the alveolar bone leads to _ _
formation between the teeth to complete the
_ _
DEFINITION 77
bony septa formation; bone crypt
TERM 78
the alveolar bone matures once
DEFINITION 78
the tooth erupts
TERM 79
the 2 types of bone
DEFINITION 79
cancellous and compact bone
TERM 80
compact bone makes up
DEFINITION 80
the buccal and lingual plates of the alveolar process
cancellous bone is the _ bone between the _ _
and _ _
spongy; alveolar bone and compact bone
TERM 82
the bone between the roots of multirooted
teeth is called
DEFINITION 82
interradicular bone
