1. What layer do neural crest cells devel- Ectoderm
op from?
2. At what embryonic age does the dental 6 weeks
lamina begin to develop?
3. What are the three components of the Enamel Organ
tooth bud? Dental papilla
Dental sac
4. What are the three morphologic stages Bud stage
of a developing tooth bud? Cap stage
Bell stage
5. During the bell stage invagination of Stratum intermedium
the epithelium occurs, which layer is
essential for enamel production?
6. Which cells does the stellate reticulum Ameloblasts
support and protect?
7. What do remnants of Hertwig's epithe- Rests of Malassez
lial root sheath persist as?
8. What is the origin of the dental papilla? Neural crest cells
9. What does the dental papilla differenti- Dentin and primordium of pulp
ate in to?
10. What are enamel pearls? Cells of epithelial root sheath that
remain attached to dentin. Differ-
entiate into ameloblasts and pro-
duce enamel
11. What are the 7 steps (in order) of histo- Initiation
phyisological differentiation of a tooth Proliferation
bud? Histodifferentiation
Morphodifferentiation
Apposition
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Mineralization
Maturation
12. During which stage of tooth develop- Initiation
ment may problems that lead to anom-
alies of tooth number occur?
13. Which three stages of tooth develop- Proliferation
ment encompasses the bud, cap, early Histodifferentiation
bell and late bell? Morphodifferentiation
14. Disruptions of proliferation may result Size
in what type of tooth anomalies? (4) Proportion
Numbers
Twinning
15. Which stage of tooth development Morphodifferentiation
may lead to anomalies of the enamel,
dentin, and cementum?
16. What is the incidence of hyperdontia? 0.3 - 3%
Males vs females? Males 2:1 females
17. Is hyperdontia more common in maxil- Maxilla 90%
la or mandible? More common in pri- Permanent dentition 5x more
mary teeth or permanent teeth? common that primary
18. Which permanent teeth are most fre- Third molars
quently missing? List in order from Mandibular second pre molars
most to least common Maxillary lateral incisors
Maxillary second pre molars
19. Name 9 syndromes that may be asso- Apert
ciated with supernumerary teeth Cleidocranial dysplasia
Gardner syndrome
Crouzon syndrome
Sturge Weber syndrome
Orofacialdigital Syndrome I
Hallermann-Strieff Syndrome - A
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Cleft lip and palate
Down syndrome
20. Which syndrome is associated with C. Apert Syndrome
shovel shaped incisors?
Narrow high palate
A. Sturge Weber Syndrome Cleft of soft palate
B. Cleidocranial dysplasia Delayed or ectopic eruption
C. Apert syndrome Shovel shaped incisors
D. Hallermann Strieff Syndrome-A Hypoplastic midface
21. Which syndrome is associated with os- D. Gardner Syndrome
teomas of the jaw?
Delayed eruption
A. Orofiaciodigital Syndrome I Supernum teeth
B. Apert Syndrome Osteomas of the jaw
C. Crouzon Syndrome
D. Gardner Syndrome
22. Agensis of third molars is associat- Maxillary lateral - either one or
ed with agenesis of which permanent both
tooth?
23. What is the inheritance pattern for non Autosomal dominant
syndromic hypodontia?
24. Which teeth (from most to least) com- Lateral incisors
monly present as microdontia? Second pre molars
Third molars
25. Which tooth anomaly is characterized Gemination
by: abortive attempt by single tooth to
divide; bifid crown with single root and
pulp chamber?
26. Which tooth anomaly is characterized Twinning
by: complete cleavage of single bud re-
sults in supernum mirror image tooth?
27. Japenese (5%)
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Which race is fusion of teeth most
commonly seen?
28. Which tooth anomaly is characterized Fusion
by: dental union of 2 embryological-
ly developing teeth two separate pulp
chambers; separate or fused canals
appear as large bifid crown with one
chamber; dentin is always confluent?
29. Which tooth anomaly is characterized Concresence
by fusion after root formation is com-
pleted? What is a common cause? Etiology: trauma
30. What class drug is chloral hydrate? Non-barbituate
Sedative hypnotic
31. What is the dosing range for Chloral 25 - 50 mg/kg (typically with
Hydrate? What is the max dose? CCHMC triple, dose at 15 - 25
mg/kg)
Max 100 mg
32. What is the other name for Meperi- Demerol
dine? What dug class is Meperidine?
Opiod, narcotic
33. What are the most common side ef- Hypotension
fects of meperidine? Respiratory depression
Emesis
Dizziness
Neurotoxic metabolite
34. What is the dosage (mg/kg) for meperi- 0.5 - 2 mg/kg
dine? What is the max dose?
Max: 50 mg
35. What is the reversal agent for meperi- Naloxone (Narcan)
dine? At what dose? 0.1 mg/kg, max dos of 2 mg