Molar Comparisons Flashcards
Maxillary and Mandibular Molars
! No deciduous ______
! NOT ______teeth
deciduous
succedaneous
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
Maxillary 1ST, 2ND, 3RD Molars BUCCAL VIEW
! The M-D crown dimension of ______ molar is greater
1st
Maxillary 1ST, 2ND, 3RD Molars BUCCAL VIEW
! The O-C crown dimension of ______
molar is greater
1st
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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