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103- Midterm Q's
SCC- Fellman
60
Dentistry
Professional
12/07/2015

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Cards

Term
Root dentin forms from which structure?
Definition
outer cells of the dental papilla
Term
What facial structure is formed from the mandibular arch?
Definition
lower face
Term
The secondary palate will give rise to which portion of the palate?
Definition
posterior 2/3 of hard palate
Term
The secondary palate contains which teeth?
Definition
maxillary canines and posterior teeth
Term
Hertwig's root sheath is composed of which two cellular layers?
Definition
inner and outer enamel epithelium
Term
T/F- Tongue development begins as a triangular swelling, the tuberculum impar
Definition
True
Term
What are 3 developmental disturbances that occur during the cap stage of tooth development?
Definition
dens en dente
gemination
fusion
Term
T/F- The paired maxillary processes fuse at the midline to form the mandibular arch?
Definition
False
Term
Another name for the primary palate is?
Definition
premaxilla
Term
A mesenchymal cell comes from which germ layer?
Definition
mesoderm
Term
After the formation of the IEE in the bell shaped enamel organ, the innermost cells elongate, repolarize, and differentiate into which cells?
Definition
preameloblasts
Term
Which germ layer gives rise to muscles and connective tissue?
Definition
mesoderm
Term
Which tooth component continues to form after the tooth has erupted?
Definition
dentin
Term
The oropharyngeal membrane disintegrates during which week of prenatal development?
Definition
4th
Term
The walls of the pulp cavity are lined with which cells?
Definition
odontoblasts
Term
T/F- The globular process becomes the philtrum and the primary palate
Definition
True
Term
Tooth development begin when a localized growth of cells on the jaw ridge produces a strand of epithelium known as?
Definition
dental lamina
Term
T/F- The shedding of the associated primary tooth for a permanent succedaneous tooth is intermittent?
Definition
True
Term
What developmental disturbance occurs during the bud stage of tooth development?
Definition
macrodontia
Term
Epithelial cells that become trapped during palatal fusion may later contribute to the formation of what structure?
Definition
cysts
Term
What is the term for two adjacent teeth that are fused by cementum?
Definition
concrescence
Term
T/F- The dental papilla will produce the future dentin and pulp tissue for the inner portion of the tooth?
Definition
True
Term
Cells that make enamel are known as?
Definition
ameloblasts
Term
Cells that make dentin are known as?
Definition
odontoblasts
Term
What structure defines the shape of the root as it is forming?
Definition
Hertwig's root sheath
Term
What term describes the attainment of adult function and size due to proliferation, differentiation, and morphogenesis?
Definition
maturation
Term
T/F- Placodes are rounded areas of specialized, thickened ectoderm found at the location of developing special sense organs
Definition
True
Term
The posterior third (base) of the tongue develops from which structure?
Definition
copula
Term
Proliferation and unequal growth in different parts of the tooth bud are characteristics of which tooth development stage?
Definition
cap stage
Term
The tongue develops from which branchial arches?
Definition
I, II, III
Term
The oral and nasal cavities develop from which two structures?
Definition
1st branchial arch and frontal process
Term
Which branchial arch divides into the maxillary and mandibular process?
Definition
I
Term
The number of roots a tooth will develop is determined by which structure?
Definition
Hertwig's root sheath
Term
What term describes the change in identical embryonic cells to become distinct, both structurally and functionally?
Definition
differentiation
Term
Rests of Malessez are composed of remnants of which developmental structure
Definition
Hertwig's root sheath epithelial cells in the PDL
Term
What are the 4 cell layers of the enamel organ?
Definition
inner enamel epithelium (IEE)
stratum intermedium
stellate reticulum
outer enamel epithelium (OEE)
Term
During which stage of prenatal development are developmental disturbances most likely to occur?
Definition
embryonic period
Term
In the area of the foramen cecum, the epithelium invaginates deep into the tissue and becomes which structure?
Definition
thyroid gland
Term
Attachment epithelium is derived from which cellular structure?
Definition
reduced enamel epithelium
Term
The point where the foregut and stomodeum share a common wall is known as?
Definition
buccopharyngeal membrane
Term
Which developmental tissue gives rise to the nervous system, epidermis, and enamel of teeth?
Definition
ectoderm
Term
If an infant is born without a primary palate, which teeth will be missing in the primary and permanent dentition?
Definition
incisors
Term
The structure at the tapered end of the ameloblast that faces the basement membrane is known as?
Definition
Tome's process
Term
What is another term for tooth development?
Definition
odontogenesis
Term
What is another term for the stomodeum?
Definition
oral pit / primitive mouth
Term
The outer cells of the dental papilla repolarize and differentiate into which cells?
Definition
odontoblasts
Term
What are 3 derivatives of the dental sac?
Definition
PDL
cementum
alveolar bone
Term
How many primary tooth buds first occus in the developing dental lamina embryo?
Definition
20
Term
Which developmental disturbance occurs during the initiation of tooth development?
Definition
anodontia
Term
Odontogenesis of the primary teeth begins during which week of prenatal development?
Definition
between 6-7 weeks
Term
The embryonic period is between which weeks of prenatal development?
Definition
2-8 weeks
Term
The midface and all structures of the oral cavity except for the posterior part of the tongue develop from which two structure?
Definition
frontal process and 1st branchial arch
Term
Cleft palate results from the lack of fusion between which two structures?
Definition
right and left palatine processes
Term
What developmental process is involves the controlled cellular growth and accumulation of byproducts?
Definition
proliferation
Term
Enamel develops from which embryonic tissue?
Definition
ectoderm
Term
Dentin and pulp develop from which embryonic tissue?
Definition
mesoderm
Term
The attachment apparatus (PDL, cementum, alveolar bone) originate from which structure?
Definition
dental sac
Term
Facial development is completed during which week of prenatal development?
Definition
12th week
Term
Nasmyth's membrane found on newly erupted teeth in children is the remains of which developmental structure?
Definition
reduced enamel epithelium (REE)
Term
The earliest sign of the human face occurs during the 3rd week and is defined by the formation of which structure?
Definition
stomodeum
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