Quiz #4 Review

Question 1

SLIDE 2: PERMANENT MAXILLARY FIRST PREMOLAR – Lingual
(“What is correct regarding to the items listed below” -kind of question”)

Q: Regarding to the lingual surface of the permanent maxillary first premolar:

1) The lingual cusp tip is slightly \_\_\_\_\_\_\_\_\_\_\_\_\_ (mesial or distal) to the mesiodistal long axis bisector. 
2) The mesial cuspal ridge will be \_\_\_\_\_\_\_\_ (shorter or longer) than the distal cuspal ridge.
3) The distal cuspal ridge will be \_\_\_\_\_\_\_\_\_ (shorter or longer) than the mesial cuspal ridge.
4) It is characteristic of the lingual cusps of both maxillary premolars to "swing" or point" to the \_\_\_\_\_\_\_ (mesial or distal).     5) (T/F) The lingual cusp tip is NOT as pointed as the FACIAL cusp tip

Answer 1

1) MESIAL
2) SHORTER
3) LONGER
4) MESIAL
5) TRUE (main word here is more POINTED)

Question 2

SLIDE 3: PERMANENT MAXILLARY FIRST PREMOLAR – Mesial
(Know measurement values btwn the root and the crown on the mesial aspect)

Q: The faciolingual measurement of the root trunk at the cervical line is about ___________ (# and more or less) mm than the overall faciolingual crown measurement.
( _____ #mm overhang facially and ______ #mm overhang lingually)

Answer 2

A: 1.0mm LESS than.

0.5mm overhang facially and 0.5mm overhang lingually

Question 3

SLIDE 4: PERMANENT MAXILLARY SECOND PREMOLAR – Occlusal
(T/F statement question)

Q1: The triangular ridges are approximately the _____________ (same or different length) and the point at which they meet is located ____________ (slightly lingual or facial) to the faciolingual bisector of the crown.
Q2: ____________ (often, rarely, or never) will there be a true, CONTINUOUS transverse ridge since the two triangular ridges are separated by a ___________ (distal, mesial or central groove).

Answer 3

Q1: SAME length, slightly LINGUAL
Q2: RARELY, CENTRAL GROOVE

Question 4

SLIDE 5: PERMANENT MANDIBULAR FIRST PREMOLAR – Facial view

Q: In a permanent mandibular first premolar, the mesial cuspal ridge is __________ (shorter or longer) than the distal cuspal ridge.

Answer 4

A: SHORTER

-Note:
All facial cusp ridges of premolar teeth are shorter at the mesial end except for the facial cusp ridges of the maxillary 1st premolar.

Question 5

SLIDE 6: PERMANENT MANDIBULAR FIRST PREMOLAR – Facial view

Q1: In the facial view of the permanent mandibular first premolar, the crown tapers __________ (alot or not much) from the contact areas to the cervical line.
Q2: The point of contact for this tooth is located where?

Answer 5

A1: ALOT. (Professor might use the word “markedly” instead of alot on exam. Same meaning).
A2: MIDDLE THIRD of the crown.
(NOT!!! at the junction of the middle third and cervical)

Question 6

SLIDE 7: PERMANENT MANDIBULAR FIRST PREMOLAR – Mesial view

Q1: What groove is present on all permanent mandibular first premolar?
Q2: Where is the location of this groove?

Answer 6

A1: MESIOLINGUAL GROOVE
A2: MERSIOLINGUAL LINE ANGLE

Question 7

SLIDE 7: PERMANENT MANDIBULAR FIRST PREMOLAR – Mesial view

Q: The mesiolingual groove __________ (is or is not continuous) with the mesiolingual coronal depression.

Answer 7

A: IS NOT CONTINUOUS

Question 8

SLIDE 8: PERMANENT MANDIBULAR SECOND PREMOLAR – Lingual view

Q1: In the permanent mandibular second premolar, the mesiolingual cusp tip is approximately _________ (#mm shorter or taller) than the facial cusp tip.
Q2: The distolingual cusp tip is about __________ (#mm shorter or taller) than the facial cusp tip.

Answer 8

A1: 1.5 mm shorter
A2: 2.0 mm shorter

Question 9

SLIDE 9: PERMANENT MANDIBULAR SECOND PREMOLAR – Mesial view
(Position of facial cusp: Single answer question)

Q: The facial cusp tip of the permanent mandibular second premolar is located where to the vertical long axis of the tooth?

Answer 9

A: SLIGHTLY FACIAL

Question 10

SLIDE 10: PERMANENT MAXILLARY FIRST MOLARS: Facial Aspect
(T/F Question)

Q: When measuring from the cervical line to the respective cusp tip:
- The facial cusps are slightly _________ (taller or shorter) than the lingual cusps, and the mesial cusps are slightly _________ (taller or shorter) than distal cusps.

Answer 10

A: TALLER (F>L)
A: TALLER (M>D)

Question 11

SLIDE 11: PERMANENT MAXILLARY FIRST MOLARS: Mesial aspect

Q1: On the mesial aspect of this permanent maxillary first molar, the facial outline of the mesiofacial root often extends __________ (facially or lingually) in its ______________ (cervical, middle, or occlusal) one third almost beyond the greatest projection of the crown
Q2: In the middle third of the root curves __________ (facially or lingually) to a relatively __________ (sharp or blunt) apex that is approximately in line with the tip of the _____________ (mesiofacial or mesiolingual) cusp.

Answer 11

Q1: extends FACIALLY in its MIDDLE ONE-THIRD
Q2: the root curves LINGUALLY to a relatively BLUNT apex that is approximately in line with the tip of the MESIOFACIAL cusp

Question 12

SLIDE 12: PERMANENT MAXILLARY FIRST MOLARS: Distal Aspect
(Looking for a single correct answer)

Q1: Why is it possible to see much of the occlusal anatomy from the distal aspect of the permanent maxillary first molars?

Answer 12

Can see much of the occlusal anatomy from the distal aspect because the the crown of this tooth is SHORTER ON THE DISTAL HALF than on the mesial half

NOTE: no curvature of the cervical line.

Question 13

SLIDE 13: PERMANENT MAXILLARY FIRST MOLARS: Occlusal Aspect
(True or False statement)

Q1: when viewing the occlusal surface of the permanent maxillary first molar:
- The crown is wider mesially or distally? (It has DISTAL convergence)
- The crown is wider facially or lingually? (It has FACIAL convergence)
Q2: Overall, the crown converges at what point? This is a unique feature of this tooth

Answer 13

A1: Wider MESIALLY than distally
A2: WIder LINGUALLY than facially
A3: the crown converges to the DISTOFACIAL (which is a unique feature to this tooth)

Question 14

SLIDE 13: PERMANENT MAXILLARY FIRST MOLARS: Occlusal Aspect

Q1: How many cusp are present on the first maxillary permanent molar? How many major/well developed and minor cusps are there?

Answer 14

5 total. 4 well developed cusps and 1 minor cusp (cusp of Carabelli)

Question 15

SLIDE 14: PERMANENT MAXILLARY THIRD MOLARS: Mesial Aspect

Q1: What is the crown to root ratio seen on the permanent maxillary third molars? (The root is only _______ (1,2, or 3) the length of the crown, which is _______ ( short or tall) for molars.

Answer 15

A1: 1:2 (crown:root)
A2: TWICE
A3: SHORT

Question 16

SLIDE 15: PERMANENT MANDIBULAR FIRST MOLAR: Facial aspect
(Cusps height order question)

Q: List the five cusps in order from tallest to shortest from this facial aspect of the perm. mandibular first molar: (MF, ML, DF, D, DL)

Answer 16

A: MESIOLINGUAL cusp
    MESIOFACIAL cusp
    DISTOFACIAL cusp
    DISTOLINGUAL cusp
    DISTAL cusp
ML > MF > DF > DL > D

Question 17

SLIDE 16: PERMANENT MANDIBULAR FIRST MOLAR: Mesial aspect

Q: In the permanent mandibular first molar mesial aspect, the mesiolingual cusp tip is going to be vertically lined up with what?

Answer 17

A: The mesiolingual cusp tip lines up with the MIDDLE 3rd ALMOST TO THE APICAL 3rd of the root.

Question 18

SLIDE 16: PERMANENT MANDIBULAR FIRST MOLAR: Mesial aspect

*The LINGUAL cusp tip is located just _______ (facial or lingual) to the lingual root outline in the ____________ (cervical or middle) one-third of the root.

Answer 18

A: FACIAL, CERVICAL one-third

Question 19

SLIDE 17: PERMANENT MANDIBULAR FIRST MOLAR – Occlusal Aspect
(Multiple answer standpoint question)

Q: Which cusp is the most FACIALLY placed cusp on the tooth? (MF, ML, DF, D, or DL)?
Q: Which cusp is the most MESIALLY placed cusp on the tooth? (MF, ML, DF, D, or DL)?

Answer 19

A1: DISTOFACIAL CUSP (DF)
A2: MESIOLINGUAL CUSP (ML)

Question 20

SLIDE 18: PERMANENT MANDIBULAR SECOND MOLAR –Mesial Aspect
(Looking for one correct answer statement)

Q: The ____________ (facial or lingual) outline of the crown has a LONGER measurement than the __________ (facial or lingual) crown outline, as is measured from the facial or lingual portion of the ______________ ( middle occlusal or cervical) line to the respective ____________ (apex tip or cusp tip).

Answer 20

A1: FACIAL outline LONGER than LINGUAL crown outline.
A2: Measured from the CERVICAL line to the respective CUSP TIP.

Question 21

SLIDE 19: PERMANENT MANDIBULAR SECOND MOLAR –Occlusal Aspect
(T/F Statement)

Q1: The central pit forms where the ________, ______, ________ (list three grooves) grooves meet.
Q2: The central pit is located on the __________ (facial or lingual) half of the crown.

Answer 21

A1: FACIAL, LINGUAL, and CENTRAL grooves.
(F,L,C)
A2: located on the LINGUAL half of the crown.

Question 22

SLIDE 20: PERMANENT MANDIBULAR THIRD MOLAR – Mesial Aspect

Q1: The inclines of the TRIANGULAR RIDGES of both the facial and lingual cusps are ___________ (steeply or shallow angled) at approximately _________ (# degrees) from the horizontal.

Answer 22

A1: STEEPLY, 40 DEGREES

Question 23

SLIDE 21: PERMANENT MANDIBULAR THIRD MOLAR – Occlusal Aspect
(Single answer question)

Q: Which line angle is the MOST ANGLED and SHARPEST? (MF, ML, D, DL, or DF)

Answer 23

MESIOLINGUAL LINE ANGLE

(ML)