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Human Growth & Development > Primary Dentition- Dr. Retrouvey (FINAL) > Flashcards

Primary Dentition- Dr. Retrouvey (FINAL) Flashcards

1
Q

Field of orthodontics treatment that occurs while the patient has mixed dentition (primary + permanent dentition):

A

Interceptive orthodontics

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2
Q

How many deciduous teeth in the primary dentition:

A

20

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3
Q

Primary dentition + Permanent molars =

A

Mixed dentition

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4
Q

The permanent molars erupt _____ to the primary dentition

A

Distal

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5
Q

_____ replaces primary teeth

A

Succedaneous

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6
Q

Permanent dentition (ideally) includes:

A

32 teeth

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7
Q

Permanent teeth erupt from:

A

6-13 years old

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8
Q

Tooth eruption can be described as a:

A

very complicated process

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9
Q

According to professor- what are the last primary maxillary & mandibular teeth to erupt?

THIS IS DIFFERENT FROM CHART

A

Canines

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10
Q

List the characteristics of deciduous dentition:

A. _____ crown shapes
B. _____ spacing
C. No _____ of the incisors
D. Less variability in the ____ than the permanent dentition
E. _____ changes with growth

A

A. symmetrical
B. interdental
C. angulation
D. occlusal relations
E. arch

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11
Q

What do we mean by symmetrical crowns in primary dentition?

A

Mesial and distal portions of the teeth are equal

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12
Q

Interdental spacing=

A

Diastemas

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13
Q

Describing the primary dentition like a picket fence, would be describing the ______ of angulation

A

Angulation (90 degrees to the occlusal plane)

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14
Q

Why are the occlusal relations less variable in primary dentition (than in permanent dentition):

A

Malocclusions have not yet been expressed

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15
Q

At what ages do we see the arches width grow bigger?

A

0-2 years

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16
Q

Interdental spacing in primary teeth is:

A

Desirable/good

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17
Q

What is a typical desirable measurement of interdental spacings in primary teeth?

A

4mm

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18
Q

There is a significant difference in size in the roots between the upper central & lateral incisors and even canines in the permanent teeth that will be replacing the them:

A

Incisor liability

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19
Q

Larger spaces found mesial to the upper cuspids & distal to the lower cuspids are called:

A

Primate spaces

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20
Q

Primary spaces are found mesial to the _____ & distal to the _____

A

upper cuspids; lower cuspids

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21
Q

Rule #1:

If there is no interdental spacing in the deciduous dentition…

A

Crowding in the permanent dentition will occur (to about 75%)

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22
Q

Crowding in primary dentition is considered:

A

Rare

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23
Q

Crowding in the primary dentition results in:

A

100% chance for crowding in permanent dentition & poses risk to impaction

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24
Q

Crowing in primary dentition (rare) may be caused by:

A
  1. Lack of bone formation
  2. Force of the lips are too strong resulting in lack of dental alveolar development
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25
Q

_____ between anterior primary teeth are important to get space for permanent incisor eruption

A

diastemas

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26
Q

the upper incisors erupt to the _____ of primary teeth

A

Labial/facial

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27
Q

Lower incisors tend to erupt to the ____ of primary teeth

A

Lingual

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28
Q

Describe the increase in arch size during the eruption of permanent incisors:

A

No significant increase in arch size

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29
Q

Because the upper incisors erupt to the labial/facial of primary teeth, the arch size:

A

expands

30
Q

Because the lower incisors erupt to the lingual of the primary teeth, the arch size:

A

decreases

31
Q

The roots of primary teeth are _______

A

symmetrical

32
Q

Since the roots of primary teeth are symmetrical this means that they are:

A

90 degrees to the occlusal plane

33
Q

ONLY _____ primary teeth are smaller compared to permanent teeth

A

anterior (incisors & canines)

34
Q

Because permanent teeth are typically larger than the anterior primary teeth, what issue do we run into?

A

Incisor liability

35
Q

Some primary _____ teeth are larger than their successor

A

Larger

36
Q

The upper second premolar replaces the:

A

Upper second primary molar

37
Q

The upper second premolar replaces the upper second primary molar.
What size of teeth are involved?

A

Upper second permanent premolar= 7.0mm mm
Upper second primary molar= 8.2 mm

(1.2 mm difference in size)

38
Q

The lower second premolar replaces the:

A

Lower second primary molar

39
Q

The lower second premolar replaces the lower second primary molar.
What size of teeth are involved?

A

Lower second premolar= 7.0

Lower second primary molar= 9.0mm

(2.9 mm difference — but you have that on both sides so close to 6mm)

40
Q

The difference in sizes between the posterior primary teeth and permanent teeth is an important aspect in:

A

Interceptive orthodontics

41
Q

The secret to orthodontic treatment is to create:

A

A desirable occlusal plane

42
Q

An imaginary surface that passes through the occlusion of the teeth:

A

Occlusal plane

43
Q

The surface of the occlusal plane is curved, and is, strictly speaking not a plane, but is approximated by one straight line _____ view based on specific reference points within the dental arches

A

Lateral view

44
Q

Unlike the primary teeth, the permanent teeth are NOT _____ degrees to the occlusal plane

A

90 degrees

45
Q

Forms in the PERMANENT dentition in response to the fact that our mandible goes through excursions:

A

Curve of spee

46
Q

in the primary dentition the curve of spee is:

A

Flat

47
Q

If there is a non-flat curve of spee in primary dentition this signifies:

A

Severe malocclusion

48
Q

Response of the dentoalveolar process to the skeletal dysplasia or to functional disturbance (are not fully expressed)

A

Dentoalveolar compensations

49
Q

If you have a discrepancy between the maxilla & mandible in deciduous dentition- the level of the occlusal plane will be affected and the ______ will compensate

A

Dentoalveolar process

50
Q

Describe the dentoalveolar compensations in the primary dentition:

A

Very minimal because normally the maxilla and mandible are still in minimal amount of growth

51
Q

If a malocclusion is diagnosed in the primary dentition, it will most probably:

A

Get worse during growth (with age)

52
Q

Occlusal relations in deciduous dentition:

  1. upper & lower incisors are ____
  2. minimal ___ & _____
  3. upper canine tip is positioned in the _____ between the lower canine & first primary moar
A
  1. vertical
  2. overbite & overjet
  3. embrasure space
53
Q

As far as occlusal relations in the deciduous dentition, the upper canine tip is positioned in the ____ between the lower canine& first primary molar

A

embrasure

54
Q

If your upper canine is well tucked into the embrasure between the lower canine & first primary molar this describes:

A

Class I

55
Q

How do you measure overbite?

A

The amount of coverage of the lower incisor by the upper incisor

56
Q

Usually the primary dentition overbite=

A

10-30%

57
Q

The amount of distance between the lower incisor and the upper incisor from the lingual surface to the labial surface of the lower:

A

Overjet

58
Q

A typical overjet measurement in primary dentition is:

A

1-2mm

59
Q

What provides the most interdigitation in primary dentition?

A

The canine

60
Q

In the primary dentition if the canine is forward (anterior) in occlusal relations this will result in:

What if the canine is backwards (posterior):

A

Class II

Class III

61
Q

pushing of incisors with tongue may result in:

A

anterior overbite

62
Q

Describe a reverse overjet malocclusion:

A

When the maxillary incisors are BEHIND the mandibular incisors

63
Q

In deciduous dentition, normal occlusal changes are due to _____, NOT from ____

A

Skeletal growth; dental changes

64
Q

-Altering functional environment
-Altering neuromuscular pattern
-Introducing habits such as thumb sucking

These can alter:

A

Alter skeleton & occlusion resulting in malocclusion

65
Q

Functional disturbances or thumb sucking habits are involved in the:

A

Etiology of malocclusions

66
Q

In deciduous dentition, unfavorable ______ lead to malocclusion, even in young patients

A

Unfavorable skeletal patterns

67
Q

_______ dental eruption may lead to malocclusion

A

Ectopic

68
Q

Ectopic dental eruption is pretty much reserved to:

A

Permanent dentition

69
Q

When the upper and/or lower (maxilla, mandible) jaws are not aligned in relation to the cranial base:

A

Skeletal malocclusions

70
Q

What influence skeletal malocclusions (which is when the upper &/or lower jaws do not align in relation to the cranial base)

A

STRONG genetic influence

But some claim that function can create significant skeletal malocclusion

71
Q

Missing primary teeth is:

A

rare

Human Growth & Development (11 decks)

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