Quiz 4 Review

Question 1

In the lingual aspect of the Permanent Maxillary First Premolar -

1. ) The lingual cusp tip is _________ to the mesiodistal long axis bisector.
2. ) The Lingual cusp is ______ than the facial cusp.
3. ) The mesial cuspal ridge is __________ than the distal cuspal ridge.
4. ) Which cusp tip is more pointed the facial cusp tip or the lingual cusp tip?

Answer 1

1. Slightly Mesial
2. Shorter
3. Shorter
4. Facial Cusp tip

Question 2

In the mesial view of the Permanent Maxillary First Premolar what is the difference between the faciolingual measurement of the root trunk and the overall faciolingual crown measurement?

Answer 2

1. 0mm less
   (0. 5 mm overhang facially and lingually)

Question 3

In the occlusal view of the Permanent Maxillary Second Premolar -

1. ) The triangular ridges are approximately the _________ and the point at which they meet is 2.)__________ to the faciolingual bisector of the crown.
2. ) Rarely (not never) will there be a true, continuous transverse ridge since the two triangular ridges are separated by a _________.

Answer 3

1. Same length
2. Slightly lingual
3. Central groove

Question 4

On the facial view of the Permanent Mandibular First Premolar which ridge is shorter, the mesial or distal cuspal ridge?

Answer 4

The Mesial Cuspal Ridge is SHORTER

Question 5

In the facial view of the Permanent Mandibular First Premolar -

1. ) How does the crown’s shape change from the contact areas to the cervical line?
2. ) Where are the contact areas located?

Answer 5

1. The crown tapers markedly (a lot)
2. In the middle third

Question 6

In the mesial view of the Permanent Mandibular First Premolar -

1. ) Where is the mesiolingual groove present at?
2. ) How does the mesiolingual groove relate to the mesiolingual coronal depression?

Answer 6

1. Mesiolingual line angle
2. It is not continuous with it.

Question 7

In the lingual view of the Permanent Mandibular Second Molar -

1. ) How does the mesiolingual cusp tip height relate to the facial cusp tip height?
2. ) How does the distolingual cusp tip height relate to the facial cusp tip height?

Answer 7

1. The mesiolingual cusp tip is 1.5mm shorter than the facial cusp tip
2. The distolingual cusp tip is about 2.0mm shorter than the facial cusp tip

Question 8

In the mesial view of the Permenent Mandibular Second Premolar - Where is the facial cusp tip located compared to the vertical long axis of the tooth?

Answer 8

Slightly Facial

Question 9

In the facial aspect of the Permanent Maxillary First Molar -

1.) The facial cusps are ________ than lingual cusps and the mesial cusps are 2.)_________ than distal cusps, when measuring from the 3.)__________ to the respective cusp tip.

Answer 9

1. Slightly Taller
2. Slightly Taller
3. Cervical Line

Question 10

In the mesial view of the Permanent Maxillary First Molar -

1. ) The facial outline of the mesiofacial root extends ________ in the 2.) ____________ almost beyond the greatest projection of the crown.
2. ) The mesiofacial root extends apically from the middle one-third and curves ________ to a relative blunt apex that is in line with the tip of the 4)___________?

Answer 10

1. Facially
2. Middle one-third
3. Lingually
4. Mesiofacial Cusp

Question 11

In the distal aspect of the Permanent Maxillary First Molar - It is possible to see much of the occlusal anatomy from the distal aspect because why?

Answer 11

The crown of this tooth is shorter on the distal half

Question 12

In the occlusal view of the Permanent Maxillary First Molar

1. ) The crown is wider _________ and 2.) _________ (what is another name for that?)
2. ) Overall the crown converges to the _________?

Answer 12

1. Mesially than distally (Distal convergence)
2. Lingually than facially (Facial convergence)
3. Distofacial

Question 13

In the mesial aspect of the Permanent Maxillary Third Molar -

1. ) The crown to root ratio is?
2. ) Which is ______ for molars?

Answer 13

1. 1:2 (root is twice the length of the crown)
2. Short

Question 14

In the facial view of the Permanent Mandibular First Molar list the cusps in order of height - tallest first.

Answer 14

1. Mesiolingual
2. Mesiofacial
3. Distofacial
4. Distolingual
5. Distal

** The mesiolingual cusp is taller than the distofacial, which is taller than the distal, but the mesiolingual cusp is taller than all three facial cusps.**

Question 15

In the mesial view of the Permanent Mandibular First Molar, the lingual cusp tip is vertically lined up with what?

Answer 15

The Middle Third to almost the Apical Third

Question 16

In the occlusal aspect of the Permanent Mandibular First Molar -

1. Which cusp is the most facially placed cusp?
2. Which cusp is the most mesially placed cusp?

Answer 16

1. Distofacial
2. Mesiolingual

Question 17

In the mesial view of the Permanent Mandibular Second Molar -

The facial outline of the crown has a1.) ________ measurement than the lingual crown outline, as you measure from the 2.)_________ to the 3.)___________?

Answer 17

1. Longer
2. Cervical line
3. Respective cusp tip

Question 18

In the occlusal view of the Permanent Mandibular Second Molar -

1. ) The central pit forms where what grooves meet?
2. ) The central pit is located where?

Answer 18

1. Facial, Lingual and Central Grooves
2. Lingual half of the crown

Question 19

In the Mesial view of the Permanent Mandibular Third Molar - the inclines of the triangular ridges of both the facial and lingual cusps are at what angle?

Answer 19

40˚

Question 20

In the occlusal aspect of the Permanent Mandibular Third Molar - which line angle is the most angled and sharpest?

Answer 20

The Mesiolingual Line Angle