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Dental Anatomy > Mandibular 2nd and 3rd Molars > Flashcards

Mandibular 2nd and 3rd Molars Flashcards

1
Q

Eruption time for mandibular 2nd molar

A

11-13 yrs

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2
Q

Shape of mandibular 2nd molar crown from the buccal

A

trapezoidal

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3
Q

Does the mandibular 2nd molar have a DB groove

A

no

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4
Q

T/F: All four cusp on the mandibular 2nd molar can be the same size

A

t

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5
Q

(mandibular 2nd molar/ mandibular 1st molar) has longer roots

A

mandibular 2nd molar

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6
Q

Buccal HOC for mandibular 2nd molar

A

Cervical third

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7
Q

Lingual HOC for mandibular 2nd molar

A

Junction of middle and occlusal thirds

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8
Q

(mandibular 2nd molar/ mandibular 1st molar) has more divergent roots

A

mandibular 1st molar

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9
Q

Crown shape of the mandibular 2nd molar from the lingual

A

trapezoidal

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10
Q

Mesial contact for mandibular 2nd molar

A

Junction of middle and occlusal thirds

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11
Q

Distal contact for mandibular 2nd molar

A

middle third

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12
Q

The CEJ of the mandibular 2nd molar is more (occlusal/cervical) on the lingual verses the buccal

A

occlusal

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13
Q

Shapes of the mesial and distal crown of mandibular 2nd molar

A

rhomboidal

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14
Q

Which root is wider on the mandibular 2nd molar

A

mesial

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15
Q

Shape of the occlusal table for mandibular 2nd molar

A

rectangle

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16
Q

Range the cusp sizes of the mandibular 2nd molar from smallest to largest

A

DL-ML-DB-MB

17
Q

How many transverse ridges does the mandibular 2nd molar have

A

2

18
Q

What are the cusps involved in the transverse ridges for the mandibular 2nd molar

A
  • MB/ML

- DB/DL

19
Q

How many fossae does the mandibular 2nd molar have? Names?

A

3– same names as Mandibular 1st molar (central, mesial triangular, and distal triangular)

20
Q

T/F the BL(M) dimension of the mandibular 2nd molar is larger than the BL(D) dimension

A

T

21
Q

T/F: The MD(B) dimension is smaller than the MD (L) dimension

A

F other way around

22
Q

What is the occlusal pattern for the mandibular 2nd molar in the central groove

A

+4

23
Q

T/F: The central groove in the mandibular 2nd molar is relatively straight

A

t

24
Q

Eruption time for mandibular 3rd molar

A

17-18 yrs

25
Q

T/F: The mandibular 3rd molar can be the largest molar in the mandibular arch

A

t– but most often it is the smallest

26
Q

Type 1 mandibular 3rd molar resembles

A

permanent mandibular 2nd molar

27
Q

Type 1 mandibular 3rd molar has… cusps

A

4

28
Q

Type II mandibular 3rd molar resembles….

A

Permanent mandibular 1st molar

29
Q

Type II mandibular 3rd molar has…cusps

A

5

30
Q

Type (I/II) is the most common form of mandibular 3rd molars

A

I

31
Q

Type I mandibular 3rd molar typically has… roots

A

fused

32
Q

Type II typically have…. roots

A

separate mesial and distal roots

Dental Anatomy (10 decks)

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