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GENP 311 > Anatomy of Primary Dentition > Flashcards

Anatomy of Primary Dentition Flashcards

1
Q

Why are primary teeth important? 5 reasons.

A
  • Need for mastication
  • Support cheeks and lips
  • Need for speech
  • Guide permanent teeth
  • Need as space maintainers
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2
Q

Do caries progress faster in primary or permanent teeth?

A

Primary

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3
Q

Early exfoliation or extraction of primary teeth may lead to…

A

Orthodontic problems because baby teeth are “space maintainers”

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4
Q

What type of teeth are not included in the primary dentition?

A

Premolars

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5
Q

From what ages do you expect to find a primary dentition?

A

6 months to 6 years old

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6
Q

From what ages do you expect to find a mixed dentition?

A

6 years to 12 years old

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7
Q

What does exfoliation mean?

A

Primary teeth are being lost

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8
Q

What does succedaneous mean?

A

Teeth that replace primary teeth

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9
Q

What teeth are nonsuccedaneous?

A

Permanent molars

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10
Q

From what ages do you expect to find a adult dentition?

A

After age 12

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11
Q

What permanent teeth replace primary molars?

A

Premolars

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12
Q

How are primary teeth labeled in the universal notation?

A

Letters A-T

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13
Q

What is the acronym to remember the second primary molars letters?

A

Apple Juice Kills Teeth

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14
Q

What is the acronym to remember first primary molar letters?

A

BILS, pay your bills first

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15
Q

How are primary enumerated teeth labeled?

A

By adding an “S” to the end of the most adjacent tooth

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16
Q

How are permanent enumerated teeth labeled?

A

By adding 50 to the number of the most adjacent tooth

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17
Q

How are primary teeth labeled in the palmer numbering system?

A

Using A-E and symbol for each quad

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18
Q

Do primary or permanent teeth tend to have more consistent shapes and fewer anomalies?

A

Primary

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19
Q

The primary incisors and canines are _______ mesio-distally than the permanent dentition.

A

Narrower

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20
Q

The primary molars are _______ mesio-distally than the permanent dentition.

A

Wider

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21
Q

What is the space mesial to maxillary canines and distal to the mandibular canines?

A

Primate space

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22
Q

What is the CDE segment that is wider mesio-distally than the 3-4-5 mesio-distal width?

A

Leeway space

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23
Q

What is the ideal spacing between primary teeth called?

A

Baume Type 1

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24
Q

What is the limited/no spacing between primary teeth called?

A

Baume Type 2

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25
Q

Do girls or boys teeth tend to come in first?

A

Girls

26
Q

Teeth tend to erupt in…

A

Pairs

27
Q

Do mandibular or maxillary teeth erupt first typically?

A

Mandibular

28
Q

What color are primary teeth?

A

Bluish white tint

29
Q

What color are permanent teeth?

A

Tend to be more yellow/gray compared to baby teeth

30
Q

What is the overall shape of primary teeth?

A

Small and bulbous crowns with sharp constriction cervically

31
Q

Primary teeth have a sharp inclination in what direction?

A

Sharp lingual inclination occlusually

32
Q

The roots are more slender and tapering and longer in proportion to the crown in what teeth?

A

Primary teeth

33
Q

What is the purpose of diverging roots of primary teeth?

A

So adult teeth can follow

34
Q

What is the pulp anatomy of primary teeth?

A

Pulp outline follows the DEH more closely than permanent teeth

35
Q

Is the pulp larger or smaller in primary teeth?

A

Larger

36
Q

Is the pulp closer or farther from the enamel surface in primary teeth?

A

Closer

37
Q

Is the microscopic structure of the tissues of primary teeth the same as permanent teeth?

A

Yes

38
Q

When does primary teeth development start?

A

Prenatal life

39
Q

When does the formation of enamel and dentin of permanent teeth occur?

A

Postnatal life

40
Q

How is the enamel surface situated in reference to the DEJ?

A

Enamel surface is parallel to the DEJ

41
Q

What is the thickness of primary enamel?

A

Primary enamel is half the thickness of permanent teeth

42
Q

What is attrition?

A

Tooth wear from tooth-to-tooth contact

43
Q

What causes attrition in primary teeth?

A

Less mineralized enamel

44
Q

What shape overall are primary anterior teeth?

A

Square

45
Q

Are there mamelons on primary teeth?

A

No

46
Q

What are the two characteristics of primary anterior roots?

A
  • Longer and narrower roots
  • Root bends 10 degrees labially
47
Q

Are primary central incisors wider mesio-distally or incisally-cervically?

A

Mesio-distally

48
Q

Are primary lateral incisors wider mesio-distally or incisally-cervically?

A

Incisally-cervically

49
Q

What shape are primary canines?

A

Pentagon

50
Q

Is the mesial cusp ridge longer or shorter than the distal cusp ridge of a primary canine?

A

Mesial cusp ridge is longer

51
Q

What shape contact areas do primary molars have?

A

Broad and flat contact areas

52
Q

Are primary maxillary molars wider bucco-lingually or mesio-distally?

A

Bucco-lingually

53
Q

Are primary mandibular molars wider bucco-lingually or mesio-distally?

A

Mesio-distally

54
Q

Why are the first primary molars unique?

A

They can be infected easily

55
Q

Are the primary molars smaller or bigger than their permanent successors (premolars)?

A

Larger

56
Q

What primary tooth has the highest failure rate for class II restorations?

A

Mandibular first primary molars

57
Q

How many cusps do the mandibular first primary molars have?

A

4

58
Q

How many cusps do the maxillary first primary molars have?

A

3

59
Q

How many roots do the maxillary first primary molars have?

A

3

60
Q

How many roots do the maxillary second primary molars have?

A

3

GENP 311 (8 decks)

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