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Flashcards in Molar Comparisons Deck (23)
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1

Maxillary and Mandibular Molars
! No deciduous ______
! NOT ______teeth

deciduous
succedaneous

2

Maxillary Molar Arch Traits
! ______ roots " 2 B
" 1 L
! Generally, ______ cusps
" 3 ______ cusps
" ______ may be missing entirely
! ______ ridge
! Broader B-L than ______
! Triangular arrangement of the
MB, DB, and ML cusps
" ______

three
four
major
DL
oblique
MD
trigone

3

Maxillary 1ST, 2ND, 3RD Molars BUCCAL VIEW
! The M-D crown dimension of ______ molar is greater

1st

4

Maxillary 1ST, 2ND, 3RD Molars BUCCAL VIEW
! The O-C crown dimension of ______
molar is greater

1st

5

Maxillary 1ST, 2ND, 3RD Molars BUCCAL VIEW
! The two buccal cusps are closest in size on ______ molar
! The buccal cusps are equal in height on ______ molar
! The DB cusp is slightly shorter than the MB cusp on ______ molar
! The DB cusp is much shorter than the MB cusp on the ______ molar

1st
1st
2nd
3rd

6

Maxillary 1ST, 2ND, 3RD Molars BUCCAL VIEW
!
The buccal groove is located farther ______ on the crown surface of the 2nd and 3rd molars
" MB cusp on 2nd and 3rd molars are ______ than the DB

distally
larger

7

Maxillary 1ST, 2ND, 3RD Molars BUCCAL VIEW
!
1st molar roots have the greatest ______
" less on the ______ molar
" least separation on the ______
molar – if not fused
The roots of 1st and 2nd molar are about the ______

MD separation
2nd
3rd
same length

8

Maxillary 1ST, 2ND, 3RD Molars BUCCAL VIEW
! The distal inclination of the roots is greatest on the ______ molar
! Root trunk differences

3rd

more apically located on the 2nd, closer to root apices

9

Maxillary 1ST, 2ND, 3RD Molars LINGUAL VIEW
!
The 1st molar has a 5th cusp
" The cusp of Carabelli (______ of the time)
The DL cusp of the ______ molar is larger than the DL cusp of the ______ molar

70%
1st
2nd

10

Maxillary 1ST, 2ND, 3RD Molars LINGUAL VIEW
! The ______ cusp of the 2nd molar is much shorter than the ______cusp from a lingual view

distolingual
mesiolingual

11

Maxillary 1ST, 2ND, 3RD Molars LINGUAL VIEW
! The DL groove does not extend as far mesially or cervically on the ______ molar
! The P root of the ______ molar is mesio- distally the widest of the three

2nd
1st

12

Maxillary 1st, 2nd, 3rd Molars OCCLUSAL VIEW
! The occlusal outline form of the 1st molar is:
" asquare
" a ______ " ______
! The rhomboidal outline is more ______ on the 2nd molar

rhomboid
parallelogram
accentuated

13

Maxillary 1st, 2nd, 3rd Molars OCCLUSAL VIEW
! The 1st and 2nd molars have about the same ______ crown dimension
! 2nd molars are narrower M-D in the ______ half of the crown than 1st molars

BL
lingual

14

Maxillary 1st, 2nd, 3rd Molars OCCLUSAL VIEW
! There is more distal crown taper on ______ molar than first molars
! The oblique ridge is smaller on ______ molar than the ______ molar
" barely visible or absent on ______ molar

2nd
2nd
1st
3rd

15

Mandibular Molar Arch Traits
! ______ roots " 1 M
" 1 D
! Generally, ______ cusps
" 4 ______ cusps
" 5th (lesser size) – 1st molar
! ______ M-D than B-L
! Only teeth where the two major lingual cusps are approximately ______ in size

two
four
major
broader
equal

16

Mandibular 1ST, 2ND, 3RD Molars BUCCAL VIEW
! The M-D crown dimension is greatest on the ______ molar
! The O-C crown dimension is greatest on the ______ molar

1st
1st

17

Mandibular1ST, 2ND, 3RD MOLARS BUCCAL VIEW
! The first molar has ______ buccal cusps
! The first molar has ______ buccal grooves
" the second and third molars usually have
only ______ groove


3
2
1

18

Mandibular1ST, 2ND, 3RD MOLARS BUCCAL VIEW
! The ______ molar has the longest roots of the mandibular molars
! The ______ molar has the greatest root separation

1st
1st

19

Mandibular1ST, 2ND, 3RD MOLARS BUCCAL VIEW
! The distal inclination of the roots is greatest on the ______ molar
! The cervico-apical dimension of the root trunk is greatest on the ______ molar

3rd
3rd

20

Mandibular 1ST, 2ND, 3RD MOLARS LINGUAL VIEW
! The 2nd molar lingual groove may terminate on the ______ surface
! It may also just slightly extend onto the ______ surface in the occlusal third
" Same for the ______ molar


occlusal
lingual
3rd

21

Mandibular 1st, 2nd, 3rd MOLARS OCCLUSAL
! The first molar crown is a ______ shape
! The second molar is more ______
! The third molar is more ______

pentagon/hexagon
square/rectangular
oval

22

Mandibular 1st, 2nd, 3rd MOLARS OCCLUSAL
VIEW
! The buccolingual dimension is greatest on ______ molars
! The 1st molar central developmental groove/cental fossa has a 􏰁______􏰀 form M-D

1st
zigzag

23

Mandibular 1st, 2nd, 3rd MOLARS OCCLUSAL
VIEW
! The 1st molar major groove pattern:
" 􏰁______􏰀
! The grooves on the 2nd and
3rd molars form a 􏰁______􏰀 " 􏰁______􏰀

Y 5
+4