300 Dental Anatomy: Maxillary Molars

Question 1

The occlusal outline form of an occlusal view for the maxillary 1st molar is what shape?

Answer 1

Rhomboidal

Question 2

MX 1M: 
The Mesiofacial (MF) and Distolingual (DL) angles from the occlusal outline tend to be:

Answer 2

Acute

Question 3

MX 1M:
The Mesiolingual (ML) and Distofacial (DF) angles from the occlusal outline tend to make what type of angle?

Answer 3

Obtuse

Question 4

What angles make up the oblique ridge?

Answer 4

ML + DF

*obtuse angles

Question 5

Maxillary 1st molar tends to taper towards the ____.

Answer 5

Buccal

Question 6

The ____ embrasure is larger is MX 1M.

Answer 6

buccal

Question 7

The side most prone to caries on the MX 1M is the:

Answer 7

Lingual

Question 8

The largest root of the maxillary first molar is the:

Answer 8

Palatal (lingual)

Question 9

The smallest root of the maxillary first molar is the:

Answer 9

Distobuccal

Question 10

From the facial view, the apex of the lingual root is in line with the ______ of the maxillary 1st molar.

Answer 10

facial groove

Question 11

From the lingual view, the palatal root is in line with the _______ of the maxillary 1st molar.

Answer 11

Midpoint of the MD diameter

Question 12

When a 4th pulp canal is prsent in a maxillary 1st molar it is located in which canal?

Answer 12

MB canal

Question 13

Which furcation is the closest to the cervical line in a maxillary first molar?

Answer 13

Mesial

Question 14

Which furcation is the furthest from the cervical line in a maxillary 1st molar?

Answer 14

Distal

Question 15

The oblique ridge of the maxillary 1st molar develops which boundary of the central fossa?

Answer 15

Distal boundary of the central fossa

Question 16

The obtuse corners of the maxillary 1st molar coincide with:

Answer 16

The direction of the oblique ridge

Question 17

The center of the oblique ridge on a maxillary 1st molar is at the same level as the height of the:

Answer 17

Marginal ridge

Question 18

The oblique ridge connects which cusps?

Answer 18

ML + DB

Question 19

The ML cusp of the maxillary 1st molar occludes in:

Answer 19

central fossa of the mandibular molars

Question 20

Greatest FL diameter of the crown for ALL teeth:

Answer 20

Maxillary 1st molar

*think cusp of carabelli

Question 21

Maxillary 1st molar has a wider MD width toward the ___

Answer 21

lingual

*MD width is longer on lingual side than buccal side

Question 22

The only cusp that is not a part of the molar cusp triangle of the maxillary first molar:

Answer 22

DL

Question 23

Largest and longest posterior cusp of the maxillary 1st molar is:

Answer 23

ML

Question 24

Which tooth is most likely forced into the maxillary sinus during extraction?

Answer 24

MX 1M

Question 25

Which tooth has a DISTAL concavity that can pose special problems in matrix placement?

Answer 25

MX 1M

Question 26

Which tooth has a MESIAL concavity that can pose special problems in matrix placement?

Answer 26

MX 1PM

Question 27

Which tooth has a shorter DL groove: Maxillary 1st Molar or Maxillary 2nd molar?

Answer 27

MX 1M

Question 28

Which cusp is the only one not a part of the molar cusp triangle of the maxillary 2nd molar?

Answer 28

DL

*same as MX 1M!

Question 29

If the DL cusp is not present on the maxillary 2nd molar, you will have what shape?

Answer 29

Heart-shaped! (3-cusp type)

Question 30

The roots of the maxillary 2nd molar tend to be:

Answer 30

Less divergent and have greater distal inclinations

*Basically, the roots are more smushed between the two molars - so they drift towards the back more (distally)

Question 31

The cross sectional outline at the cervical for maxillary 2nd molar is what shape?

Answer 31

Triangular