Quiz #4

Question 1

Permanent Mandibular First Molar: Facial Aspect - Does the deep depression between the roots cross the cervical line?

Answer 1

No, Gandalf is there!

Question 2

Permanent Mandibular First Molar: Facial Aspect - The two roots are positioned _____ and _____. The roots of the mandibular first molar are usually ____ and more______ than those of the mandibular second or third molar.

Answer 2

• mesially and distally
• longer and more divergent

Question 3

Permanent Mandibular First Molar: Occlusal Aspect - The ______ cusp is the most facially placed and the ______ cusp is the most mesially placed cusp on the tooth

Answer 3

• distofacial
• mesiolingual

Question 3

Permanent Mandibular First Molar: Occlusal Aspect - The _____ cusp is the most distally located cusp

Answer 3

-distal

Question 4

Permanent Mandibular First Molar: Distal Aspect - The ______ cusp exclusively comprises the distal contact area, which is also slightly _____ to the faciolingual vertical bisector of the crown

Answer 4

• distal
• facial

Question 6

Permanent Mandibular First Molar: Facial Aspect - The ____ cusp comprises a very small part of the total mesiodistal width of the facial surface because most of the cusp is _____ to the distofacial line angle placing it on the distal aspect of the tooth.

Answer 6

• distal
• lingual

Question 6

Permanent Mandibular First Molar: Facial Aspect - There is a pit present at the terminus that commonly requires restoration that is termed “_____” or “______” pit

Answer 6

facial or buccal

Question 7

Permanent Mandibular First Molar: Distal Aspect - Both the distal and the distofacial cusp tips are _____ to the apices of the mesial and distal roots

Answer 7

-facial

Question 8

Permanent Mandibular Second Molar: Occlusal Aspect - The _____ groove and the _____ groove meet the central groove at _____ angles dividing the occlusal surface into mesial and distal halves. These three major grooves present a structure which is said to be a “___” or “____” design

Answer 8

• facial
• lingual
• right
• ”+”
• “cross”

Question 9

Permanent Mandibular First Molar: Distal Aspect - The facial outline of the distal cusp is located _____ to the facial outline of the taller distofacial cusp with the entire ______cusp superimposed onto the distofacial cusp

Answer 9

• lingual
• distal

Question 9

Permanent Mandibular Second Molar: Facial Aspect - There is ____ facial groove, called the facial (or buccal) groove and it divides the mesiofacial and distofacial ducsp, ending in a distinct facial (buccal) pit in the ______ third of the crown

Answer 9

• one
• middle

Question 10

Permanent Mandibular First Molar: Facial Aspect - The root trunk on the facial aspect measures _____ mm. There is a deep depression between the roots that becomes progressively more _____ as it extends occultly from the bifurcation to the cervial line.

Answer 10

• 3.0 mm
• shallow

Question 10

Permanent Mandibular First Molar: Mesial Aspect - Since the mesial cusps are ______ than the distal cusps on the tooth, _______ of the occlusal surface can be viewed.

Answer 10

• taller
• very little

Question 11

Permanent Mandibular First Molar: Facial Aspect - The mesiofacial groove is ______ than the distofacial groove and extends from the occlusal margin of the facial surface and terminates about ________ to the cervical line ending in a slight depression that extends ______ from the terminus of the groove.

Answer 11

• shorter
• half way
• laterally

Question 12

Permanent Mandibular First Molar: Mesial Aspect - The greatest curvature of the facial outline is at the ______ third of the crown and is termed the ______ ridge. The crest is ______ occlusally when compared to the cervical ridges found on maxillary molars but (is or is not) still in the cervical third.

Answer 12

• Cervical
• cervical
• higher
• is

Question 13

Permanent Mandibular First Molar: Occlusal Aspect - Arrange the cusp in order from largest to smallest

Answer 13

• MF
• ML
• DL
• DF
• Distal

Question 15

Permanent Mandibular First Molar: Lingual Aspect - When measured on the lingual, the total tooth length is ______ because the roots are measured from the cervical line to the apex

Answer 15

• greater

Question 16

Permanent Mandibular Third Molar: Facial Aspect - The two facial cusp variety ends in a facial pit, approximately in the ______ third of the surface, usually exhibiting decay because it is difficult for the patient to clean in this area of the mouth

Answer 16

-middle

Question 17

Permanent Mandibular Second Molar: Occlusal Aspect - Each cusp has mesial and distal cruspal ridges extending laterally, as well as a triangular ridge that extends ______ the central fossa. On most specimen the triangular ridges meet to form two _____ ridges.

Answer 17

• towards
• transverse

Question 19

Permanent Mandibular First Molar: Lingual Aspect - The cervical line is positioned approximately ____ mm _____ on the lingual surface than on the facial surface so the root trunk measurement will also be ____ mm longer(average of 4mm) from the cervical line to bifurcation on the lingual aspect of the tooth.

Answer 19

• 1.0 mm
• higher
• 1.0 mm

Question 20

Permanent Mandibular First Molar: Mesial Aspect - The angulation of the triangular ridge of the mesiolingual cusp is approximately _____ degrees in relation to the mesial marginal ridge

Answer 20

30 degrees

Question 21

Permanent Mandibular First Molar: Mesial aspect- The mesial crown outline is ______ shaped

Answer 21

rhomboidal

Question 22

Permanent Mandibular Second Molar: Occlusal Aspect - The lateral ends of the central groove are in the ____ and _____ TRIANGULAR fossae and each end has a respective mesial and distal TRIANGULAR pit

Answer 22

• Mesial
• Distal

Question 24

Permanent Mandibular First Molar: Facial Aspect - The distal cusp tip is (more or less) pointed that either the mesiofacial or distofacial cusp

Answer 24

more pointed

Question 25

Permanent Mandibular Second Molar: Occlusal Aspect - The ______ forms where the facial, lingual and central grooves meet and is located on the ______ half of the crown.

Answer 25

• central pit
• lingual

Question 26

Permanent Mandibular Second Molar: Mesial Aspect - The tip of the mesiofacial cusp is close to the vertical _______ long axis bisector than to the greatest facial outline of the crown

Answer 26

faciolingual- in other words it is close to the middle of the tooth than to the facial outline

Question 27

Permanent Mandibular Second Molar: Facial Aspect - The facial groove is ____ except for a slight _____ inclination at the facial pit and is located slightly _____ to the vertical line dividing the crown in half, mesiodistally

Answer 27

• vertical
• mesially
• distal

Question 28

Permanent Mandibular Third Molar: Occlusal Aspect - The crown is _____ mesiodistally than it is facioligually

Answer 28

-wider

Question 29

Permanent Mandibular First Molar: Facial Aspect - The distofacial cusp has cusp ridges that give rise to a (more or less) pointed cusp tip that the mesiofacial cusp, but the cusp tip is still _____

Answer 29

• more
• rounded

Question 30

Permanent Mandibular First Molar: Facial Aspect - The cuspal ridges of the mesiofacial cusp meet at an angle that is almost ______

Answer 30

flat

Question 31

Permanent Mandibular Third Molar: Mesial Aspect - The central groove is positioned ______ to the faciolingual long axis bisector

Answer 31

lingual

Question 32

Permanent Mandibular Second Molar: Occlusal Aspect - The tips of both facial cusps, especially the _______ cusp, are located ______ lingually from the facial outline of the crown than the tips of the lingual cusps in relation to the lingual outline

Answer 32

• mesiofacial
• farther

Question 33

Permanent Mandibular Second Molar- Occlusal Aspect- What three grooves meet at right angles diving the occlusal surface into mesial and distal halves, or a “+” design?

Answer 33

1. facial groove
2. lingual groove
3. central groove