Quiz 3 Review

Question 1

In the Permanent Maxillary First Molar (facial aspect) the cuspal rides of the distofacial cusp meet at a (1.)___________ making it a (2.)_________ than the mesiofacial cusp tip.

Answer 1

1. 90 degree angle
2. Shaper

Question 2

In the Permanent Maxillary First Molar the mesiofacial root extends (1.) _______ with a slight mesial curve for two-thirds of its length, then curves slightly to the (2.) __________?

Answer 2

1. Apically
2. Distal

**This will be the only correct statement to chose**

Question 3

In the lingual aspect of the Permanent Maxillary First Molar the cuspal ridges on the mesiolingual cusp meet at a ________ at the cusp tip.

Answer 3

Wide Obtuse Angle - 130˚ or more

Question 4

From the distal view of the Permanent Maxillary First Molar -

1. How many cusps are visible from this view?

Answer 4

1. Only 4 of the 5 cusps (can’t see cusp of Carabelli)

**This will be a single answer, which one is INCORRECT**

Question 5

In the distal view of the Permanent Maxillary First Molar most of this distal convergence takes place because _______________?

Answer 5

The facial cervical ridge flattens out in the distal half of the tooth.

Question 6

In the distal aspect of Permanent Maxillary First Molars the tip of the apex of the distofacial root is lined up with what?

Answer 6

The Mesiofacial Cusp

Question 7

In the distal aspect of Permanent Maxillary First Molars -

1. How deep is the root surface depression.
2. How frequent does this root surface depression show up?
3. Describe the location of the root surface depression.
4. What must clinician be careful about with this depression?
5. How much does the surface root depression encompass?

Answer 7

1. It is shallow
2. It is consistent
3. It extends cervically across the cervical line on to cervical third of crown
4. Calculus deposits that engulf depression
5. A small percentage, maybe 20% (not HALF)

Question 8

In the occlusal view of the Permanent Maxillary First Molars - what is the order of cusp size from SMALLEST to LARGEST?

Answer 8

• Cusp of Carabelli cusp
• Distofacial cusp
• Distolingual cusp
• Mesiofacial cusp
• Mesiolingual cusp

Question 9

In the occlusal view of the Permanent Maxillary First Molar -

1. How does the low point of the oblique ridge compare to the mesial and distal marginal ridges?
2. What is the groove (or the low point of the oblique ridge) between where the two ridges meet called?
3. What entities will be at the same depth on this tooth?

Answer 9

1. Their depths are at the same level
2. Transverse groove of the oblique ridge
3. The transverse groove of the oblique ridge, the mesial marginal ridge groove, distal marginal ridge groove

Question 10

1. ) On the occlusal aspect of the Permanent Maxillary First Molar there are two major fossae, where are they located?
2. ) What are the two major fossae

Answer 10

1. On either side of the mid-point of the oblique ridge
2. Central Fossa (in the center) & Distal Fossa (distal side of oblique ridge)

Question 11

In the facial aspect of the Permanent Maxillary Second Molar how does the facial groove compare to the maxillary first molar?

Answer 11

It is short and **more distal **

Question 12

On the Permanent Maxillary Second Molars (lingual view) the mesial cusp ridge of the mesiolingual cup meets the relatively straight mesial outline of the crown at what angle?

Answer 12

115˚ angle

Question 13

In the mesial aspect of the Permanent Maxillary Second Molar -

1. How many cusps can be seen from this view?
2. Which cusps can be seen from this view?

Answer 13

1. 3 of the 4 cusps
2. Mesiofacial, Distofacial, Mesiolingual

Question 14

From the distal aspect of the Permanent Maxillary Second Molar the tip of the mesiolingual cusp and distolingual cusp are lined up with each other and (1.)____________ positioned when compared to the (2.)______________?

Answer 14

1. Slightly Facial
2. The apex of the lingual root

Question 15

In the occlusal view of the Permanent Maxillary Second Molar what are the Cusps in order from smallest to largest?

Answer 15

• Distolingual
• Distofacial
• Mesiofacial
• Mesiolingual

** know it in the reverse order too**

Question 16

In the occlusal view of the Permanent Maxillary Second Molar - The traingular ridge of the distofacial cusp and the distal cuspal ridge of the mesiolingual cusp (oblique ridge) meet where?

Answer 16

Closer to the central pit than on the Maxillary First Molar

Question 17

In the facial aspect of the Permanent Maxillary Third Molar - how many cusps can be seen and what are their names?

Answer 17

3 Cusps can be seen

Mesiofacial, Distofacial, Mesiolingual

Question 18

In the lingual view of the Permanent Maxillary Third Molar which cusp tips can be viewed?

Answer 18

• Mesiofacial
• Distofacial
• Mesiolingual

Question 19

On the occlusal aspect of the Permanent Maxillary Third Molar -

1. ) The triangular ridge and distal cusp ridge of the distolingual cusp become what?
2. ) There is a disctinct ________ marginal ridge.

***3.) What is not part of the sigle roll of enamel?

Answer 19

1. A single convex roll of enamel
2. Distal
3. ***The triangular ridge of the distofacial cusp

Question 20

When comparing the Permanent Maxillary Molars

1.) What does the distolingual cusp do from first molar to second to third?

Answer 20

1. The distolingual cusp decreases in size from 1st to 2nd to 3rd molars (same as saying the facial to lingual taper of each maxillary molar increases from 1st to 2nd to 3rd)

**All the other statements will be INCORRECT