Molars

Question 1

What shape is the occlusal view of a Mx 1st molar?

Answer 1

Rhomboidal

Question 2

What angles of a Mx 1st molar forms a acute angle?

Answer 2

Mesiofacial and distolingual

Question 3

What angles for the occlusal outline tend to be obtuse angles?

Answer 3

Mesiolingual and distofacial

Question 4

What Molar tends to taper toward the facial rather then toward the lingual so the buccal embrasure is larger than the lingual?

Answer 4

Mx 1st molar

Question 5

What is the most prone facial and lingual surfaces of the molars?

Answer 5

Lingual of the Mx and facial of the Mn

Question 6

What root is the largest on the Mx molar?

Answer 6

Palatal

Question 7

What is the smallest root of the Mx molar?

Answer 7

Distobuccal

Question 8

Viewing a Mx molar from the facial, what root is in line with the facial groove of the tooth?

Answer 8

Lingual root

Question 9

Viewing the Mx 1st molar from the lingual what root is in line with the midpoint of MD diameter?

Answer 9

Palatal root

Question 10

When a 4th pulp canal is present on a Mx 1st molar where is it located? Which root?

Answer 10

Mesiobuccal root

Question 11

Of the 3 furcations of the Mx 1st molars, which one is closest to the cervical line?

Answer 11

Mesial

Question 12

Of the 3 furcations of a Mx 1st M, which one is furthest away from the cervical line?

What is the distance of all of the furcations?

Answer 12

Distal

Mesial < Buccal < distal

Question 13

What does the oblique ridge form on the Mx 1st molar?

Answer 13

The distal boundary of the central fossa

Question 14

What does the oblique ridge connect?

Answer 14

The mesiolingual and distobuccal cusps

Question 15

The mesiolingual cusp of the Mx 1st molar occludes in what ?

Answer 15

In the central fossa of the Mn molar

Question 16

Which molar has the greatest faciolingual diameter of the crown of all teeth?

Answer 16

Mx 1st molar

Question 17

Which molar is closest in size FL vs. MD of any other Mx posterior teeth?

Answer 17

Mx 1st molar

Question 18

Which molar has a wider M-D width toward the facial than toward the lingual?

Answer 18

Mx 1st molar

Question 19

Which cusp of the Mx molar is not part of the molar cusp triangle?

Answer 19

Distolingual cusp

Question 20

What is the largest and longest cusp on the Mx 1st molar?

Answer 20

Mesiolingual cusp

Question 21

What tooth is most likely to be forced into the Mx sinus during an extraction is?

Answer 21

Mx 1st molar

Question 22

What molar has a distal concavity that can pose special problems in matrix placement?

Answer 22

Mx 1st molar

Question 23

What Mx molar has a shorter distolingual groove? Mx 1st or Mx 2nd molar?

Answer 23

Mx 1st molar

Question 24

In a Mx 2nd molar, if the DL cusp is not present what does the tooth shape turn into?

Answer 24

3 cusp type heart shaped

Question 25

The roots of the Mx 2nd molar tend to be ________ __________ and have a _______ distal inclination

Answer 25

Less divergent Greater

Question 26

What is the cross sectional outline of the Mx 2nd molar at the cervical

Answer 26

Roughly triangular

Question 27

What kind of grooves pattern does the Mn 1st molar have ?

Answer 27

Y shaped or dryopethicus pattern

Question 28

What is the occlusal outline of the Mn 1st molar?

Answer 28

Pentagonal

Question 29

What is the smallest cusp of the Mn 1st molar

Answer 29

Distal cusp

Question 30

What is the largest cusp of the Mn 1st molar Size of cusps largest to smallest

Answer 30

Mesiofacial cusp MB>ML>DL>DB>D

Question 31

Which molar has the largest M-D crown dimension of ANY other tooth

Answer 31

Mn 1st molar

Question 32

What Mn teeth are the ONLY Mn teeth that are wider mesio-distally than facio-lingual ?

Answer 32

Mn molars

Question 33

What tooth has the LARGEST F-L crown dimension of any MN tooth?

Answer 33

Mn 1st molar

Question 34

Which Mn molar has the largest occlusion-cervical crown dimension of ant Mn tooth?

Answer 34

Mn 1st molar

Question 35

Where are the facial surfaces of the Mn molars located?

Answer 35

Medial to the border of the ascending ramus

Question 36

What is the key feature that differentiates the Mn 1st and 2nd molar is?

Answer 36

The number of developmental grooves (Mn 2nd has two)

Question 37

How many facial cusps does the Mn 1st molar have?

Answer 37

3

Question 38

The developmental groove between the DF cusp and the distal cusp of the Mx 1st molar is?

Answer 38

Distofacial

Question 39

How may roots and root canals does the Mn 1st molar have?

Answer 39

2 roots and 3 canals

Question 40

The Mx 1st molar usually have 2 ____ canals?

Answer 40

Mesial

Question 41

Which molar has the longest root of any other molar?

Answer 41

Min 1st molar

Question 42

Which molar has the greatest root separation of any other root?

Answer 42

Mn 1st molar

Question 43

The mid root cross section of 1st molars, which has the largest and which root is it

Answer 43

Mn and mesial

Question 44

Which root of the Mn 1st molar has the greatest F-L dimension of any other root

Answer 44

Mesial root

Question 45

Which cusp of the Mn 2nd molar occludes with the central fossa of the Mx molar

Answer 45

Distobuccal cusp

Question 46

What does the the ideal position and height of lingual cusps of Mn 1st molar accommodate for?

Answer 46

Working movement

Question 47

Where is the shortest interdental papilla found ?

Answer 47

Between the Mn premolar and the Mn 1st molar

Question 48

What is the groove pattern of the Mn 2nd molar?

Answer 48

Cross pattern

Question 49

Mn molars are the only teeth that are wider?

Answer 49

Mesio-distally than faciolingually

Question 50

The crown of the Mn 2nd molar inclines to the >

Answer 50

Mesial and lingual

Question 51

Which tooth most frequently has 3 cusps?

Answer 51

Mx 3rd molar

Question 52

What is the shape of a Mx 3rd molar usually?

Answer 52

Heart shaped because they are missing the DL cusp

Question 53

Which molar has the most variation of crown morphology

Answer 53

Mn 3rd molars

Question 54

Which tooth has the greatest distal root inclination of any other tooth

Answer 54

Mn 3rd molar

Question 55

Which tooth has the shortest root of any other Mn tooth

Answer 55

Mn 3rd molar

Question 56

Which tooth has the greatest morphological variation besides the Mx laterals

Answer 56

Mn 3rd molars