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D2 Summer - Growth & Development Final > Final > Flashcards

Final Flashcards

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1
Q
  1. How many teeth come from successional lamina?
A

20

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2
Q
  1. Speeding up permanent tooth eruption:
A

Extract when 2/3 of the permanent rooth is formed

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3
Q
  1. Primary lower canine is missing very early. What intervention?
A

Lingual arch w/ hook or maybe just hook

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4
Q

Primary molar size

A

10mm

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5
Q
  1. Mom complains her kid has 6 teeth at 14 months. Is this normal amount?
A

No, more teeth than normal but nothing to worry about

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6
Q
  1. Which arch has more leeway?
A

Mandible

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7
Q
  1. What age should a female get ortho intervention?
A

8-11

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8
Q

In caucasians, which tooth is most commonly missing

A

upper lateral incisor

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9
Q
  1. What percent of people have missing teeth?
A

3-5%

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10
Q

Most impacted tooth

A

Upper canine

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11
Q

Order of cognitive development

A

sensorimotor, preoperational, concrete, and formal

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12
Q

T/F chronological age is MORE important than sequence for emotional development

A

False

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13
Q

T/F In primary teeth, it is normal to have incisal edges in contact in the vertical dimension

A

True

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14
Q

Most important conditioning in dentistry?

A

Positive and negative reinforcement

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15
Q

Kid throws tantrum and ends up leaving dental office

A

Negative reinforcement

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16
Q

Growth of arch width __________ after eruption of permanent upper canine

A

DOES NOT CHANGE

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17
Q

Overbite _______ in permanent dentition

A

Increases

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18
Q

Most important structure for tooth eruption

A

Root
**if not root should be dental sac/follicle or crown

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19
Q

Primary dentin

A

Formed during tooth development (4um/day)

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20
Q

Permanent dentition of maxilla erupts _______ to primary, and mandibular erupts _______ to primary

A

Labial/Buccal
Lingual

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21
Q

Protease:

A

Enamelysin
Kallikrein

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22
Q

Late bell stage:

A

Dental lamina breaks and then separates the tooth from oral epithelium

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23
Q

When should you reduce canines in primary dentin?

A

Severe crowding (>5mm)

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24
Q

What is ankylosis?

A

fusion of the root of a primary tooth to the underlying bone

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25
Q

How do you treat ankylosis?

A

Monitor (for exfoliation; if not, extract)

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26
Q

At 9 years old, upper permanent canine appears to be mesially angled. To prevent palatal impacting you should do what?

A

a. Radiograph then decide after 6 months?

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27
Q

Funcitonal posterior crossbite

A

Deviated in the direction of crossbite

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28
Q

Crouzon syndrome:
› Premature closure of all suture
› Larger orbit
› Prognathic mandible
› All of the above

A

Premature closure of all sutures

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29
Q

Cleidocranial dysplasia
› Supernumerary teeth
› Delayed eruption
› Slow eruption
› All of the above

A

All of the above

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30
Q

Osteogenesis imperfecta:

A

Class 3 malocclusion

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31
Q

Normal skeletal relationship:

A

Cranial base angle is stable for life

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32
Q

Most common malocclusion

A

Class 1

33
Q

Skeletal pattern that involves mandibular prognathism?

A

Class 3

34
Q

The original angle class invovles:
› A-P dimension of the 1st molars
› Transverse
› Vertical
› All of the above

A

› A-P dimension of the 1st molars

35
Q

First primary tooth erupts at?

A

6 months (5-8 months)

36
Q

First permanent tooth erupts at?

A

6 years

37
Q

Occlusal plane

A

Imaginary plane that passes through occlusal surfaces

38
Q

T/F the primary dentition has no angulation in the transverse direction

A

True

39
Q

What is overbite?

A

The vertical overlap of mandibular incisors by their maxillary antagonists

40
Q

Vertical alveolar bone growth leads to arch width changes greater/smaller/same in the maxilla compared to the mandible?

A

Greater
a. Maxilla gets larger, mandible gets smaller

41
Q
  1. What age should female Mandibular permanent central incisor erupt?
A

6-7 years

42
Q

6.8 year old has big lower central incisor and tooth count reveals a missing tooth

A

Fusion

43
Q

White coat syndrome =

A

Behavioral development

44
Q

What dentin is formed before tooth eruption and only in the crown?

A

Mantle dentin

45
Q

During primary to mixed dentition, maxillary permanent incisors erupt ______ to primary and mandibular permanent incisors erupt ______ to primary

A

Labial
Lingual

46
Q

Secretory ameloblast produce proteases during enamel formation. Which of the following is not one of these proteases?

A

Amelogenin (also Ameloblastin, Enamelin)

47
Q

When do glycosaminoglycans pull water into enamel organ?

A

Cap stage

48
Q

What can crossbite be caused by?
› Transitory
› Skeletal
› Neuromuscular imbalance
› All of the above

A

All of the above

49
Q

Do upper permanent canines erupt before, or after, or during eruption of 2nd premolars?

A

After

50
Q

Occlusal plane of primary teeth is what shape?

A

Flat

51
Q

9-year-old has a diastema between the central incisors with erupted permanent upper
lateral incisors and primary canine. What should you do?

A

Radiograph and decide?

52
Q

Define incisor liability

A

Permanent incisors are larger than primary incisors

53
Q

Crowding in primary dentition =

A

Crowding in permanent dentition

54
Q

Malocclusion diagnosed in primary dentition =

A

malocclusion in permanent dentition

55
Q

Ugly duckling stage is during what years?

A

8-10 y/o

56
Q

What erupts first – lower or upper permanent canine?

A

Lower permanent canine

57
Q

Which is a characteristic of primary incisors?

A

crowns are symmetrical

58
Q

3) Intercanine distance in lower arch is expected to increase

A

Until 10-11 y/o

59
Q

T/F Chronological age is more important than 8 ages of man?

A

False

60
Q

T/F Lower permanent canine erupt before upper permanent canine

A

True

61
Q

Anterior open bite:
a) Transitory
b) Skeletal origin
c) Neuromuscular imbalance
d) All of above

A

All of the above

62
Q

Group of permanent teeth first to erupt?

A

Central incisors

63
Q

T/F: upper primary incisor show no angulation in mesio-distal dimension

A

True

64
Q

Once the permanent canines have erupted, the intercanine distance width:

A

d. Remains the same (doesn’t change after age 10-11)

65
Q

Which of the following cell types are not derived from cranial neural crest?

A

Ameloblast

66
Q

How many calcified teeth does 3-year-old have?

A

48 partially
24 fully calcified
erupted teeth: 20

67
Q
  1. Down syndrome class?
A

a. Class III malocclusion

68
Q

Which stage of tooth development do cells in the enamel organ synthesize glycosaminoglycans in the ECM?

A

a. Cap stage

69
Q

Class II malocclusion presents:

A

Retrognathic mandible

70
Q

Overbite in an average patient will _____

A

a. Be more pronounced in permanent dentition?

71
Q

T/F: There is only one pathway for tooth development

A

False

72
Q

Mom complains her kid has 6 teeth at 14 months. Is this the normal amount?

A

No, less teeth than normal, however nothing to worry about (normal is 8-12)

73
Q

List 2 side effects of thumb sucking

A

a. Unfavorable skeletal patterns?
b. Ectopic dental eruption?
c. Malocclusion
d. Anterior open bite?

74
Q
  1. List teeth that are not present (besides 3rd molars) in a 9.5 year old
A

a. Upper canine, both upper/lower premolars, & 2nd molars?

75
Q

Characteristics of Cleidocranial Dysplasia are:
a. Poorly developed clavicle
b. Supernumerary teeth
c. Have congenital defects

A

A&B

76
Q

What is not class III?

A

Increased overjet

77
Q
  1. At 10 years old, ankylosis of the canine. To reduce potential, what should we do?
A

Extract

78
Q

Transition from juvenile to adult are determined by

A

a. Development of permanent canines

79
Q

What are two ways the body accommodates for incisor liability?

A
  1. Interdental space between incisors
  2. Maxillary permanent dentition erupts labially to primary

D2 Summer - Growth & Development Final (11 decks)

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