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Dental Anatomy > Eruption of teeth > Flashcards

Eruption of teeth Flashcards

1
Q

Explain the Universal symbolic system used to classify primary dentition

A

From right to left:
ABCDE / FGHIJ
TSRQP / ONMLK

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2
Q

Zisgmondy/Palmer symbolic system

A

From right to left:
EDCBA / ABCDE
EDCBA / ABCDE

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3
Q

Once fully calcified, it takes ____ until permanent tooth eruption takes place

A

2-5 years

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4
Q

Which is the first permanent tooth to calcify?

A

mandibular first molar

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5
Q

Once the permanent tooth erupts, it continues to form until what?

A

Until the closure of apex or apices, which takes place 1.5-3.5 years after eruption

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6
Q

Year of eruption of permanent Mx central

A

7-8

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7
Q

Year of eruption of permanent Md central

A

6-7

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8
Q

Year of eruption of permanent Mx lateral

A

8-9

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9
Q

Year of eruption of permanent Md lateral

A

7-8

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10
Q

Year of eruption of permanent Mx canine

A

11-12

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11
Q

Year of eruption of permanent Md canine

A

9-10

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12
Q

Year of eruption of permanent Mx 1st PM

A

10-11

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13
Q

Year of eruption of permanent Md 1st PM

A

10-12

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14
Q

Year of eruption of permanent Mx 2nd PM

A

10-12

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15
Q

Year of eruption of permanent Md 2nd PM

A

11-12

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16
Q

Year of eruption of permanent Mx 1st molar

A

6-7

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17
Q

Year of eruption of permanent Md 1st molar

A

6-7

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18
Q

Year of eruption of permanent Mx 2nd molar

A

12-13

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19
Q

Year of eruption of permanent Md 2nd molar

A

11-13

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20
Q

Year of eruption of permanent Mx 3rd molar

A

17-21

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21
Q

Year of eruption of permanent of Md 3rd molar

A

17-21

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22
Q

calcification of primary dentition begins ____

A

in utero (14 weeks with maxillary and mandibular central incisors)

23
Q

Formation of primary dentition is completed when?

A

2-3 years after the initiation of calcification with the formation of the roots of 2nd Mx molars

24
Q

When do the first primary teeth typically erupt?

A

during the 6th month of life (Md incisors)

25
Q

Time of eruption of primary Mx 51/61

A

10 m

26
Q

Time of eruption of primary 52/62

A

11 m

27
Q

Time of eruption of primary Mx 53/63

A

19 m

28
Q

Time of eruption of primary Mx 54/64

A

16 m

29
Q

Time of eruption of primary Mx 55/65

A

29 m

30
Q

Time of eruption of primary Md 71/81

A

8 m

31
Q

Time of eruption of primary Md 72/82

A

13 m

32
Q

Time of eruption of primary 73/83

A

20 m

33
Q

Time of eruption of primary Md 74/84

A

16 m

34
Q

Time of eruption of primary Md 75/85

A

27 m

35
Q

3 significant major stages of tooth formation:

A
  • beginning calcification
  • crown completion
  • root completion
36
Q

14 stages of tooth formation

A 
Ci = cusp initiated
Cco = cusp coalesced
Coc = cusp outline complete
Cr1/2 = crown 1/2
Cr3/4 = corwn 3/4
Crc = crown complete
Ri = root initiated
Cli = cleft initiated
R1/4 = root 1/4
R1/2 = Root 1/2
R3/4 = Root 3/4
Rc = root complete
A1/2 = apex 1/2
Ac = Apex complete
37
Q

what are natal teeth?

A

teeth that can be present at birth. These are either primary teeth or supernumerary

38
Q

What are the names of teeth that erupt within the first month of birth?

A

neonatal teeth

39
Q

Sequence for eruption of Mx teeth (same for Md)

A

ABDCE

40
Q

Sequence of eruption or primary Mx and Md teeth

A

Md A, Mx A, Mx B, Md B, Mx D, Md D, Mx C, Md C, Md E, Mx E

AB D C E
A B D CE

41
Q

By 6-8 months, which teeth should be present?

A

Md central incisors

42
Q

By 12 months, which teeth should be present?

A

All incisors

43
Q

By 18 months, which teeth should be present?

A

All incisors, 1st molars, and canines

44
Q

By 30 months, which teeth should be present?

A

all primary teeth

45
Q

What effect can the premature loss of primary teeth have on the permanent dentition?

A

may lead to a loss of space needed for the permanent dentition, leading to crowding

46
Q

If 85 is retained, what could happen to the Mx tooth occluding it?

A

it could overerupt

47
Q

sequence of eruption of Mx and Md permanent dentition

A

Mx: 6 1 2 4 5 3 7 8
Md: 6 1 2 3 4 5 7 8

48
Q

first permanent teeth to erupt?

A

Md 1st molars

49
Q

Which generally erupt prior to their counterparts in permanent dentition? Mx or Mad

A

Md

50
Q

When do Md 1st molars erupt and where?

A

at about 6 years. Distal to primary second molars

51
Q

All permanent incisors erupt between ___ to ____ years

A

7.5 to 8.5 years

52
Q

When to Md permanent canines erupt?

A

about 10 years

53
Q

By what age do all premolars and Mx canines erupt?

A

by 10.5-11.5 years

Dental Anatomy (3 decks)

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