Maxillary First Molar

Question 1

Which tooth is known as the 6-year molar?

Answer 1

Maxillary First Molar

Question 2

Which tooth has the largest crown in the entire mouth?

Answer 2

Maxillary First Molar

Question 3

Which tooth on the maxillary arch is the largest in overall size?

Answer 3

Maxillary First Molar

Question 4

Among maxillary molars, which one is least variable n anatomic form?

Answer 4

Maxillary First Molar

Question 5

What are the dimensions from largest to smallest on a Maxillary First Molar?

Answer 5

FL>MD>OC

Question 6

What is the geometrical shape of the Maxillary First Molar from lingual and/or facial view?

Answer 6

Trapezoidal (all teeth)

Tapers cervically from facial/lingual view

Question 7

What is the geometrical shape of the Maxillary First Molar from proximal view?

Answer 7

Trapezoidal and tapers occlusally

Question 8

What is the geometrical shape of the Maxillary First Molar from occlusal view?

Answer 8

Rhomboidal (but 5 sides)

Leans mesially

Question 9

Where is the Mesial HOC on a Maxillary First Molar?

Answer 9

Junction of Occlusal and Middle Third

Question 10

Where is the Distal HOC on a Maxillary First Molar?

Answer 10

Middle Third

Question 11

Is the entire outer portion of the distal outline from the facial view of the Maxillary First Molar concave or convex?

Answer 11

Distal outline from facial view is convex

Question 12

What is the comparison of the disco-occlusal an mesial-occlusal angle on a Maxillary First Molar?

Answer 12

Disco-Occlusal angle is more rounded (obtuse)

Mesial-Occlusal angle is much sharper (acute)

Question 13

From the facial view of a Maxillary First Molar, can one see the distal surface of the tooth?

Answer 13

Distal Surface is visible from facial view due to rhomboidal effect tapering mesially

Question 14

What is so special about the Cervical line (CEJ) on a facial view of a Maxillary First Molar?

Answer 14

there is a V-Shape dip on a Maxillary First Molar facial view towards the buccal root bifurcation

Question 15

Which teeth in the entire mouth have the least lingual taper?

Answer 15

Mandibular 2nd premolar 3-cusp variety & Maxillary First Molar

Question 16

Which cusp is the biggest on a Maxillary First Molar?

Answer 16

Mesiolingual Cusp is the biggest

Question 17

Which cusp is the sharpest on a Maxillary First Molar?

Answer 17

Distobuccal Cusp is sharpest

Question 18

Which Tooth has the largest F-L dimension of any tooth?

Answer 18

Maxillary First Molar

Question 19

What maxillary molar has the least difference between MD & FL? In other words, which maxillary molar has a nearly equal length than any other maxillary molar?

Answer 19

Maxillary First Molar

Question 20

Which tooth of the maxillary molars does not have lingual taper?

Answer 20

Maxillary First Molar

Question 21

Which root has the greatest MD dimension in maxillary arch?

Answer 21

Palatal (lingual) root of maxillary molars (First?)

Question 22

Unique features of maxillary molars only…. (flip over)

Answer 22

Oblique ridge
distolingual groove
Trigone (MB + DB + ML)
Mesiollingual Cusp has 2 ridges (1 from transverse ridge + 1 from oblique ridge)

Question 23

When we refer to the two facial roots as having a unique shape of pliers, we are speaking about…?

Answer 23

Maxillary First Molar MB + DB roots

Question 24

Which teeth share a characteristic where the distal proximal contact area is centered both, OC + FL?

Answer 24

Maxillary Lateral Incisor, Canine, First + Second Molar

Mandibular Second Molar

Question 25

From a facial view a Maxillary First Molar, which cusp can be seen between MB + DB cusp

Answer 25

Mesionlingual cusp

Question 26

Where is the Facial HOC on a Maxillary First Molar? What is that site called and which way is it more prominent from a facial view?

Answer 26

Facial HOC is located as cervical third due to Bucco-gingival ridge which runs horizontally. It is more prominent mesially

Question 27

Which groove is found on the lingual surface of the Maxillary First Molar?

Answer 27

Distolingual Groove

Question 28

Which two cusps does the distolingual groove separate on a Maxillary First Molar?

Answer 28

ML + DL cusps

Question 29

Which maxillary premolar has a wide MD lingually than facially?

Answer 29

Maxillary First Molar

Question 30

On which cusp of which tooth is the Cusp of Carabelli found?

Answer 30

Maxillary First Molar ML cusp

Question 31

What feature does the lingual root of the Maxillary First Molar have that other Maxillary molars do not?

Answer 31

Lingual root of Maxillary First Molar posses a root depression/concavity

Question 32

From a proximal view of Maxillary First Molar, where does the lingual root lay in comparison to the crown?

Answer 32

Palata root apex is lingual to the crown

Question 33

From mesial view of the Maxillary First Molar, which cusps are visible?

Answer 33

MB + ML cusps

Question 34

From distall view of the Maxillary First Molar, which cusps are visible?

Answer 34

all 4 cusps + all of occlusal surface

Question 35

Does the Maxillary First Molar from the mesial side have a groove?

Answer 35

Maxillary First Molar has a menial groove bisecting the mesial marginal ridge

Question 36

From which view can one see more of the facial surface and less of the lingual surface on a Maxillary First Molar?

Answer 36

from distal view one can see more facial and less lingual due to its rhomboidal shape (5 sides)

Question 37

Where is the distal contact of a Maxillary First Molar located on a F-L dimension?

Answer 37

Distal contact area located midway F-L (with other 4 teeth)

Question 38

Which cusps are acute and obtuse in a Maxillary First Molar?

Answer 38

``` Acute = MB + DL Obtuse = DB + ML ```

Question 39

Which tooth of the entire mouth has the largest F-L dimension of any tooth?

Answer 39

Maxillary First Molar

Question 40

Of the 3 maxillary molars, which tooth has nearly similar FL and MD dimensions?

Answer 40

Maxillary First Molar has nearly similar FL & MD dimension but FL > MD

Question 41

Which side of the tooth has a wider MD dimensions on a Maxillary First Molar?

Answer 41

M-D width as wide or wider lingually than facially (Mandibular 2nd premolar as well)

Question 42

List the largest to smallest cusp size of a Maxillary Molars?

Answer 42

Largest ---------------------> Smallest | ML > MB > DB > DL

Question 43

Which cusp of the Maxillary Molars has the most variability from 1st, to 2nd, to 3rd?

Answer 43

DL cusp

Question 44

Which cusps of the Maxillary First Molar make up the Trigone?

Answer 44

MB + DB + ML

Question 45

Which tooth (other than the Maxillary Premolar(s)) resembles the Maxillary Premolar

Answer 45

2/3 of the Maxillary First Molar looks like Max Premolar

Question 46

Which two cusps make up the oblique ridge on a Maxillary First Molar?

Answer 46

DB + ML

Question 47

True or False | Oblique ridge of the Maxillary First Molar does not have the height as the marginal ridges?

Answer 47

False | Oblique ridge of the Maxillary First Molar has about the same height as the marginal ridge

Question 48

How many pits and which is the deepest is found on a Maxillary First Molar?

Answer 48

Medial, Central, Distal | Central = Deepest

Question 49

What are the developmental grooves of a Maxillary First Molar?

Answer 49

Buccal, Central, & Distolingual

Question 50

How many fossae are found on a Maxillary First Molar?

Answer 50

4 cusps | Medial, Central, Distal, Distolingual

Question 51

Which root is the longest and largest on a Maxillary First Molar? Widest MD than FL.

Answer 51

Lingual Root is the widest MD than FL of a Maxillary First Molar

Question 52

Which root has a cervical concavity on a Maxillary First Molar?

Answer 52

DB root

Question 53

Which root from the three in a Maxillary First Molar can have a possibility of having 2 pulp canals?

Answer 53

MB root of a Maxillary First Molar