Final Exam - Dental Morph

Question 1

Which tooth is most likely to have a bifurcated root?

Answer 1

mandibular canine

Question 2

Which tooth is least likely to have a bifurcated root?

Answer 2

maxillary canine

Question 3

Which tooth has a lower mesial marginal ridge?

Answer 3

1st mandibular premolar

Question 4

Which primary molar has an oblique ridge & a distolingual groove?

A. Maxillary 1st
B. Maxillary 2nd
C. Mandibular 1st
D. Mandibular 2nd

Answer 4

B. Maxillary 2nd

Question 5

Which premolar is readily identifiable by a deep mesial concavity and a groove traversing the mesial marginal ridge onto the mesial surface?

A. Mandibular 1st premolar
B. Mandibular 2nd premolar
C. Maxillary 1st premolar
D. Maxillary 2nd premolar

Answer 5

C. Maxillary 1st premolar

Question 6

Which premolar is MMR lower than DMR?

A. mand 1st
B. mand 2nd
C. max 1st
D. max 2nd

Answer 6

A. mand 1st

Question 7

Which premolar has only 1 pulp horn?

Answer 7

mandibular 1st

Question 8

Which premolar has a crescent shaped developmental groove?

Answer 8

mandibular 2nd

Question 9

Which of the following would be of greatest value in distinguishing between a primary mandibular 2nd molar and a permanent mandibular 1st molar?

A. Number of roots
B. Number of cusps
C. Arrangement of grooves on the occlusal surface
D. Comparative size of the distal cusps

Answer 9

D. Comparative size of the distal cusps

Explanation​: All will be the same in both teeth EXCEPT for the comparative size of the distal cusps. In the primary mandibular 2nd molar, all three buccal cusps will be about the same size. This is not true in the permanent mandibular 1st molar.

Question 10

Which of the following teeth is least likely to have two canals?

A. Maxillary canine
B. Mandibular canine
C. Maxillary 1st premolar
D. Mandibular 1st premolar
E. Maxillary 2nd premolar

Answer 10

A. Maxillary canine

Question 11

Which of the following teeth is broader faciolingually than mesiodistally?

A. Maxillary central incisor
B. Maxillary lateral incisor
C. Mandibular central incisor

Answer 11

C. Mandibular central incisor

Question 12

Which of the following teeth have crowns that are narrower buccolingually than mesiodistally?

A. Maxillary central incisors
B. Maxillary canines
C. Maxillary 1st premolars
D. Maxillary 2nd premolars

Answer 12

A. Maxillary central incisors

Question 13

Which of the following teeth has a root trunk that is 1/2 to 2/3’s the length of the root?

A. Maxillary 1st premolar
B. Mandibular 1st premolar
C. Maxillary 2nd premolar
D. Maxillary 1st molar
E. Mandibular 1st molar

Answer 13

A. Maxillary 1st premolar

Question 14

Which of the following teeth has a mesial cusp arm/ridge that is longer than the distal cusp arm/ridge?

A. Permanent maxillary canine
B. Permanent mandibular canine
C. Primary maxillary canine
D. Primary mandibular canine
E. Both primary maxillary & mandibular canines

Answer 14

C. Primary maxillary canine

Question 15

Which of the following teeth exhibits the MOST deviation in crown morphology?

A. Maxillary central incisor
B. Maxillary lateral incisor
C. Mandibular lateral incisor
D. Maxillary canine
E. Mandibular canine

Answer 15

B. Maxillary lateral incisor

Question 16

Which of the following surfaces of a tooth is always next to an adjacent tooth?

A. Distal
B. Facial
C. Palatal
D. Occlusal
E. Proximal

Answer 16

E. Proximal

Explanation​: Proximal surface = the surface of a tooth which faces toward an adjoining tooth in the same arch

Question 17

Which of the following statements is true with respect to the major differences between primary and permanent teeth?

A. Primary teeth have larger pulp chambers with prominent pulp horns
B. Primary teeth have longer root trunks
C. The roots of the posterior primary teeth are closer together and often fused
D. Primary teeth have thicker dentin

Answer 17

A. Primary teeth have larger pulp chambers with prominent pulp horns

Question 18

Which of the following statements is true with respect to the differences between primary & permanent teeth?

A. Primary teeth have longer root trunks
B. Primary teeth have proportionately larger pulp chambers with prominent pulp horns
C. The roots of the posterior primary teeth are closer together and often fused
D. Permanent teeth have a markedly constricted cervix compared to primary teeth

Answer 18

B. Primary teeth have proportionately larger pulp chambers with prominent pulp horns

Question 19

Which of the following statements is not correct?

A. A primary central incisor is replaced by a permanent central incisor
B. A primary canine is replaced by a permanent canine
C. A primary 1st molar is replaced by a permanent 1st molar
D. A permanent 1st molar is an accessional tooth

Answer 19

C. A primary 1st molar is replaced by a permanent 1st molar

Question 20

Which of the following roots typically has two canals?

A. Buccal root of a maxillary 1st premolar
B. Mesiobuccal root of a maxillary 1st molar
C. Mesiobuccal roots of maxillary 1st & 2nd molars
D. Palatal root of maxillary 1st molar
E. Distobuccal roots of maxillary 1st & 2nd molars

Answer 20

B. Mesiobuccal root of a maxillary 1st molar

Question 21

Which of the following represents the normal eruption pattern for primary teeth?

A. Central incisor, lateral incisor, canine, 1st molar, 2nd molar
B. Central incisor, lateral incisor, 1st molar, canine, 2nd molar
C. 1st molar, central incisor, lateral incisor, canine, 2nd molar
D. 1st molar, 2nd molar, central incisor, lateral incisor, canine

Answer 21

B. Central incisor, lateral incisor, 1st molar, canine, 2nd molar

Question 22

Which of the following represents the largest cusp of the mandibular 1st molar?

A. Distal
B. Mesiobuccal
C. Distobuccal
D. Mesiolingual
E. Distolingual

Answer 22

B. Mesiobuccal

Question 23

Which of the following represents the general crown OUTLINE of canines, as viewed from the labial aspect?

A. Hexagonal
B. Triangular
C. Rhomboidal
D. Pentagonal
E. Diamond-shaped

Answer 23

D. Pentagonal

Explanation​: And the GEOMETRIC form is trapezoidal

Question 24

Which of the following primary teeth erupts first?

A. Maxillary 1st molar
B. Mandibular 1st molar
C. Maxillary 2nd molar
D. Mandibular 2nd molar

Answer 24

A. Maxillary 1st molar

Question 25

Which of the following premolars often has two roots?

A. Maxillary 1st
B. Mandibular 1st
C. Maxillary 2nd
D. Mandibular 2nd

Answer 25

A. Maxillary 1st

Question 26

Which of the following premolars most frequently has only one pulp horn?

A. Mandibular 1st premolar
B. Mandibular 2nd premolar
C. Maxillary 1st premolar
D. Maxillary 2nd premolar

Answer 26

A. Mandibular 1st premolar

Question 27

Which of the following premolars may have a lingual developmental groove?

A. Mandibular 1st premolar
B. Mandibular 2nd premolar
C. Maxillary 1st premolar
D. Maxillary 2nd premolar

Answer 27

B. Mandibular 2nd premolar

Question 28

Which of the following permanent incisors has the deepest lingual fossa?

A. Maxillary central incisor
B. Maxillary lateral incisor
C. Mandibular central incisor
D. Mandibular lateral incisor

Answer 28

B. Maxillary lateral incisor

Question 29

Which of the following is the most frequently missing anterior tooth?

A. Maxillary central incisor
B. Maxillary lateral incisor
C. Maxillary canine
D. Mandibular central incisor
E. Mandibular lateral incisor

Answer 29

B. Maxillary lateral incisor

Question 30

Which of the following is NOT correct?

A. In all anterior teeth the cervical embrasure space is larger than the incisal embrasure space
B. In premolar teeth, the facial embrasure space is smaller than the lingual embrasure space
C. The gingival papilla occupies the facial embrasure space

Answer 30

C. The gingival papilla occupies the facial embrasure space

Question 31

Which of the following is FALSE regarding the permanent maxillary lateral incisor?

A. Anterior tooth with the most variable anatomy
B. Erupts at 8-9 years of age
C. Mesioincisal angle is a right angle
D. Crown is smaller in dimension than the maxillary central incisor

Answer 31

C. Mesioincisal angle is a right angle

Question 32

Which of the following is correct with respect to the deciduous maxillary canine?

A. It has a blunt flattened cusp tip
B. It has a short root relative to the crown height
C. It has a prominent lingual ridge that runs from the cusp tip to the cingulum
D. It has a single lingual fossa
E. It is exfoliated at 8-9 years

Answer 32

C. It has a prominent lingual ridge that runs from the cusp tip to the cingulum

Question 33

Which of the following is correct with respect to deciduous maxillary canine?

A. it has a blunt flattened cusp tip
B. it has a short root relative to the crown height
C. it has a prominent lingual ridge that runs from the cusp tip to the cingulum D. it has a single lingual fossa
E. it is exfoliated at 8-9 years

Answer 33

C. it has a prominent lingual ridge that runs from the cusp tip to the cingulum

Question 34

Which of the following is a characteristic of ALL mandibular incisors?

A. Their proximal contacts are located in the middle 1/3 inciso-cervically
B. Their distoincisal angles are rounded
C. Their facial heights of contour are in the incisal 1/3
D. They have marginal ridges on their lingual surfaces

Answer 34

D. They have marginal ridges on their lingual surfaces

Question 35

Which of the following cusps is not in the primary molar triangle or trigon of the maxillary molar?

A. Mesiobuccal cusp
B. Mesiolingual cusp
C. Distobuccal cusp
D. Distolingual cusp

Answer 35

D. Distolingual cusp

Question 36

Which is the older tooth?

Answer 36

B

Question 37

Which image shows the mesial view of the mandibular lateral incisor?

Answer 37

A

Explanation​: From the mesial view, you can see a portion of the lingual surface. You can’t see any of the lingual surface from the distal view.

Question 38

Which furcation in the maxillary first molar is farthest from the CEJ?

Answer 38

distal

Question 39

Which furcation in the maxillary 1st molar is closest to the CEJ?

A. Facial
B. Mesial
C. Distal
D. Lingual

Answer 39

B. Mesial

Question 40

Which exhibits the most diversity in crown morphology?

Answer 40

maxillary lateral incisor

Question 41

Which deciduous tooth when viewed from the buccal has a mesial crown height that is twice that of the distal?

A. Mandibular 1st molar
B. Mandibular 2nd molar
C. Maxillary 1st molar
D. Maxillary 2nd molar

Answer 41

A. Mandibular 1st molar

Question 42

Which cusp in maxillary molars becomes progressively smaller starting with the 1st molar?

A. Distolingual cusp
B. Distobuccal cusp
C. Mesiolingual cusp
D. Mesiobuccal cusp

Answer 42

A. Distolingual cusp

Question 43

Which crown belongs with the below root (shown in transverse section)?

Answer 43

A

Question 44

Which crown belongs with the below root (shown in transverse section)?

Answer 44

C

Question 45

Which are the most commonly congenitally missing ANTERIOR teeth?

Answer 45

maxillary lateral incisors

Question 46

When viewed from the occlusal aspect, the surface of the maxillary 1st molar has 2 acute and 2 obtuse angles. Which are the obtuse angles?

A. Mesiolingual & distolingual
B. Mesiobuccal & mesiolingual
C. Mesiolingual & distobuccal
D. Mesiobuccal & distolingual
E. Distolingual & distobuccal

Answer 46

C. Mesiolingual & distobuccal

Question 47

When viewed from the mesial aspect, the position of the buccal cusp tip of the mandibular 1st premolar is:

A. Centered over the midline of the tooth
B. Buccal to the midline of the tooth
C. Lingual to the midline of the tooth
D. Buccal to the buccal outline of the root

Answer 47

A. Centered over the midline of the tooth

Question 48

When viewed from the buccal, what is the geometric form of the maxillary 1st premolar?

A. Triangle
B. Trapezoid
C. Rectangle
D. Rhomboid

Answer 48

B. Trapezoid

Question 49

When is the first sign of tooth development?

A. 6-7 weeks i.u.
B. 18-20 weeks i.u.
C. At birth
D. 6 months

Answer 49

A. 6-7 weeks i.u.

Question 50

When does the maxillary central incisor erupt?

A. 6-7 years
B. 7-8 years
C. 8-9 years
D. 10-11 years

Answer 50

B. 7-8 years

Question 51

When does the permanent maxillary central incisor erupt?

A. 6-7 years
B. 7-8 years
C. 8-9 years
D. 10-11 years

Answer 51

B. 7-8 years

Question 52

When does the maxillary 1st premolar typically erupt?

A. 7-8 years
B. 8-9 years
C. 10-11 years
D. 11-12 years

Answer 52

C. 10-11 years

Question 53

What premolar is this tooth?

A. Maxillary 1st
B. Maxillary 2nd
C. Mandibular 1st
D. Mandibular 2nd

Answer 53

C. Mandibular 1st

Explanation​: Note the mesiolingual groove outlined in red. This groove is unique to the mandibular 1st premolar!

Question 54

What molar is illustrated in this transverse section?

A. Maxillary 1st
B. Maxillary 2nd
C. Mandibular 1st
D. Mandibular 2nd

Answer 54

A. Maxillary 1st

Question 55

What is the universal number for this tooth?

A. #6
B. #7
C. #8
D. #9
E. #10
F. #11

Answer 55

D. #9

Question 56

What is the universal number for this tooth?

A. #6
B. #7
C. #8
D. #9
E. #10
F. #11

Answer 56

E. #10

Question 57

What is the name of the structure highlighted in orange?

A. Cusp tip
B. Marginal ridge
C. Oblique ridge
D. Triangular fossa

Answer 57

C. Oblique ridge

Question 58

What is the name of the highlighted embrasure?

A. Incisal embrasure
B. Gingival embrasure
C. Facial embrasure
D. Lingual embrasure

Answer 58

C. Facial embrasure

Question 59

What is the name of the highlighted embrasure?

A. Incisal embrasure
B. Gingival embrasure
C. Facial embrasure
D. Lingual embrasure

Answer 59

B. Gingival embrasure

Question 60

What is the longest tooth in the maxillary arch?

A. Maxillary central incisor
B. Maxillary lateral incisor
C. Maxillary canine

Answer 60

C. Maxillary canine

Question 61

What is the largest cusp of the maxillary 1st molar?

Answer 61

ML (with its cusp of Carabelli)

Question 62

What is the largest cusp of the mandibular 1st molar?

Answer 62

MB

Question 63

What is the first permanent tooth to erupt?

A. Mandibular central incisor
B. Mandibular lateral incisor
C. Mandibular first molar
D. Mandibular second molar

Answer 63

C. Mandibular first molar

Question 64

What are the most likely anterior teeth to have 2 pulp canals?

Answer 64

mandibular canine

Question 65

What are the least likely anterior teeth to have 2 pulp canals?

Answer 65

maxillary canine

Question 66

Using universal notation, what is the tooth number of the tooth illustrated here in transverse section?

A. #2
B. #3
C. #14
D. #15

Answer 66

C. #14

Question 67

Using universal notation, what is the tooth number of the permanent maxillary left 1st molar?

A. #3
B. #14
C. #15
D. #18
E. #19

Answer 67

B. #14

Question 68

Using universal notation, what is the tooth number for this tooth?

A. #2
B. #3
C. #14
D. #15

Answer 68

B. #3

Question 69

Using universal notation, what is the tooth number for this tooth?

A. #20
B. #21
C. #28
D. #29

Answer 69

C. #28

Question 70

True or False? In the maxillary 1st premolar, the mesial cusp arm of the buccal cusp is shorter than the distal cusp arm?

A. True
B. False

Answer 70

B. False

Question 71

True or False: Root depressions are larger on distal than mesial generally.

Answer 71

True

Question 72

These pictures represent the mesial and distal views of the same tooth. Identify the tooth. Idk where the pic is

A. #18
B. #19
C. #30
D. #31

Answer 72

C. #30

Explanation​: You can tell it is permanent mandibular 1st molar because you can see DB and Distal cusps from the distal view (no distal cusp in the mandibular 2nd molar). Then, using the surfaces as orientation, you can determine it is a mandibular RIGHT first molar – #30.

Question 73

The smallest permanent tooth in the mouth is the:

A. Maxillary central incisor
B. Maxillary lateral incisor
C. Mandibular central incisor
D. Mandibular lateral incisor

Answer 73

C. Mandibular central incisor

Question 74

The shape of the maxillary central incisor when viewed from the mesial is best described as:

A. Rhomboidal
B. Triangular
C. Ovoid
D. Trapezoidal

Answer 74

B. Triangular

Question 75

The shape of the maxillary central incisor when viewed from mesial is best described as:

Answer 75

Triangular

Question 76

The roots of the primary mandibular right first molar are flared to allow space for the development of ______:

A. #20
B. #21
C. #28
D. #29
E. #30

Answer 76

C. #28

Question 77

The roots of the primary mandibular right 1st molar are flared to allow space for the development of which tooth?

A. #20
B. #21
C. #28
D. #29
E. #30

Answer 77

C. #28

Question 78

The primary function of the pulp is

A. Provide nutrition
B. Provide sensation
C. Form dentin
D. Form enamel

Answer 78

C. Form dentin

Question 79

The premolar with the occlusal groove pattern that may simulate the letter “Y” is the:

A. Maxillary 1st
B. Mandibular 1st
C. Maxillary 2nd
D. Mandibular 2nd

Answer 79

D. Mandibular 2nd

Question 80

The permanent maxillary 2nd molar differs from the permanent maxillary 1st molar in the number of:

A. Roots
B. Buccal grooves
C. Cusps
D. Marginal ridges

Answer 80

C. Cusps

Question 81

The outline of the crowns of all posterior teeth from the facial and lingual views is best described as:

A. Oval
B. Rhomboidal
C. Trapezoidal
D. Triangular

Answer 81

C. Trapezoidal

Question 82

The mesioincisal angle of #8 is:

A. A right angle
B. Acute
C. Obtuse
D. Rounded

Answer 82

A. a right angle

Question 83

The mesial marginal ridge groove is found in which of the following teeth?

A. Maxillary canines
B. Mandibular canines
C. Maxillary 1st premolars
D. Maxillary 2nd premolars
E. Both maxillary 1st and 2nd premolars

Answer 83

C. Maxillary 1st premolars

Question 84

The mesial contact of a maxillary central incisor is located in the:

A. Incisal 1/3
B. Middle 1/3
C. Junction of the middle & cervical 1/3
D. Cervical 1/3

Answer 84

A. Incisal 1/3

Question 85

The maxillary 2nd molar develops from:

A. 3 lobes
B. 4 lobes
C. 5 lobes
D. 6 lobes

Answer 85

B. 4 lobes

Question 86

The mandibular 2nd premolar in general erupts ___ the mandibular 1st premolar erupts

A. Before
B. After
C. At the same time

Answer 86

B. After

Question 87

The longest tooth (including root and crown) in the ‘upper’ arch is the….

Answer 87

Maxillary canine

Question 88

The first non-succedaneous tooth to erupt is the:

A. Maxillary central incisor
B. Mandibular central incisor
C. Mandibular lateral incisor
D. Maxillary 1st molar
E. Mandibular 1st molar

Answer 88

E. Mandibular 1st molar

Question 89

The fifth or accessory cusp of the maxillary 1st molar is called:

A. Distal cusp
B. Mesiolingual cusp
C. Cusp of Carabelli
D. Cusp of Carvinelli

Answer 89

C. Cusp of Carabelli

Question 90

The embrasures of posterior teeth are called:

A. Incisal, Gingival, Mesial, Distal
B. Occlusal, Gingival, Mesial, Distal
C. Incisal, Gingival, Buccal, Lingual
D. Occlusal, Gingival, Buccal, Lingual
E. Mesial, Distal, Buccal, Lingual

Answer 90

D. Occlusal, Gingival, Buccal, Lingual

Question 91

The development of the root of permanent mandibular lateral incisor is first completed at

Answer 91

10 years

Question 92

The deciduous molars are replaced by which teeth?

A. Permanent 1st & 2nd molars
B. Permanent 1st & 2nd premolars
C. Permanent canines & 1st premolars
D. Permanent 2nd & 3rd molars

Answer 92

B. Permanent 1st & 2nd premolars

Question 93

The cingulum of the maxillary central incisor is

A. Centered on the lingual aspect of the tooth
B. Slightly mesial to the center of the lingual
C. Slightly distal to the center of the lingual
D. The maxillary central does not have a cingulum

Answer 93

C. Slightly distal to the center of the lingual

Question 94

The cervical ridge would stand out the most prominently as a distinct entity in which of the following primary maxillary molars?

A. Mesiobuccal of the 1st
B. Distobuccal of the 1st
C. Mesiobuccal of the 2nd
D. Distobuccal of the 2nd

Answer 94

A. Mesiobuccal of the 1st

Question 95

Regarding the mesioincisal and distoincisal angles of the mandibular central incisors:

A. Both angles are right angles
B. The mesioincisal angle is a right angle & the distoincisal angle is rounded
C. The mesioincisal angle is rounded & the distoincisal angle is a right angle
D. Both angles are rounded

Answer 95

A. Both angles are right angles

Question 96

Rank the roots of the maxillary 1st molar in order from largest to smallest.

A. MB > DB > Palatal
B. Palatal > MB > DB
C. DB > Palatal > MB

Answer 96

B. Palatal > MB > DB

Question 97

On which surface of the permanent maxillary central incisor does the cervical line exhibit the greatest amount of curvature?

A. Facial
B. Lingual
C. Mesial
D. Distal

Answer 97

C. Mesial

Question 98

On the crown of the maxillary canine, the height of contour is normally located in the cervical third of which of the following surfaces?

A. Labial
B. Lingual
C. Both labial & lingual
D. Neither labial nor lingual

Answer 98

C. Both labial & lingual

Question 99

On a maxillary molar, which of the following ridges is formed by the union of the distal cusp ridge of the mesiolingual cusp and the triangular ridge of the distofacial cusp?

a. Cuspal
b. Central
c. Marginal
d. Oblique
e. Transverse

Answer 99

d. Oblique

Question 100

Maxillary tooth crowns exhibit concavities on which of the following surfaces?

A. The mesial of the central incisor & 1st premolar
B. The mesial of the canine & 1st molar
C. The distal of the 1st premolar & mesial of the 2nd molar
D. The mesial of the 1st premolar & distal of the 1st molar
E. The distal of the 1st molar & mesial of the 2nd molar

Answer 100

D. The mesial of the 1st premolar & distal of the 1st molar

Question 101

List the roots of the maxillary first molar in order from largest to smallest: mesiobuccal, distobuccal, and palatal *

Answer 101

palatal, mesiobuccal, distobuccal

Question 102

In which premolar is the mesial marginal ridge at a lower level than the distal marginal ridge?

A. Mandibular 1st premolar
B. Mandibular 2nd premolar
C. Maxillary 1st premolar
D. Maxillary 2nd premolar

Answer 102

A. Mandibular 1st premolar

Question 103

In which of the following premolars is the mesial cusp ridge of the buccal cusp longer than the distal cusp ridge of the buccal?

A. Mandibular 1st premolar
B. Mandibular 2nd premolar
C. Maxillary 1st premolar
D. Maxillary 2nd premolar

Answer 103

C. Maxillary 1st premolar

Question 104

In which arch is the second premolar larger than the first premolar?

A. maxillary
B. mandibular

Answer 104

B. mandibular

Question 105

In the sequence of eruption of the deciduous dentition, which of the following is correct?

A. Maxillary central incisor erupts before the mandibular central incisor
B. Mandibular lateral incisor erupts before the maxillary lateral incisor
C. Maxillary 1st molar erupts before the mandibular 1st molar
D. Mandibular canine erupts before the maxillary canine

Answer 105

C. Maxillary 1st molar erupts before the mandibular 1st molar

Question 106

In the maxillary 1st molar, what is the structure that connects the DB cusp to the ML cusp?

A. Central groove
B. Oblique ridge
C. Primary molar triangle (trigon)
D. Cusp of Carabelli

Answer 106

B. Oblique ridge

Question 107

In the mandibular first premolar, which groove separates the mesial marginal ridge from the lingual cusp?

A. Mesial groove
B. Mesiolingual groove
C. Central groove
D. Distal groove

Answer 107

B. Mesiolingual groove

Question 108

In general, which teeth are the most commonly congenitally missing?

Answer 108

3rd molars

Question 109

In comparison with the mandibular canine, the maxillary does NOT *

A. have a shorter crown height
B. have a more pronounced cingulum
C. have a more pronounced developmental depression on the mesial surface of the root
D. have a cusp tip more nearly centered over the root when viewed from the facial

Answer 109

C. have a more pronounced developmental depression on the mesial surface of the root

Question 110

In comparison to a mandibular canine, a maxillary canine:

A. Is longer incisogingivally
B. Has a cusp height that is 1⁄3 the height of the crown
C. Has a less developed cingulum
D. Is narrower mesiodistally

Answer 110

B. Has a cusp height that is 1⁄3 the height of the crown

Question 111

In a tooth that is partly erupted, the clinical crown height is _____ than the anatomical crown height

A. longer
B. shorter
C. equal to

Answer 111

B. shorter

Question 112

In a tooth that is partially erupted, how does the clinical crown height compare to the anatomical crown height? The clinical crown height is:

A. Longer
B. Shorter
C. Equal in height

Answer 112

B. Shorter

Question 113

In a molar, where do root canals usually join the pulp chamber?

A. At the level of the furcation
B. At varying levels, depending on age
C. Within the middle third of the crown
D. Within the cervical third of the crown
E. Apical to the cementoenamel junction

Answer 113

E. Apical to the cementoenamel junction

Question 114

Identify this tooth

A. Maxillary canine
B. Maxillary 1st premolar
C. Maxillary 2nd premolar

Answer 114

B. Maxillary 1st premolar

Explanation​: It is a maxillary 1st premolar because it has 2 cusps and you can see a mesial marginal ridge developmental groove that runs over the mesial marginal ridge (in red). This groove is a unique feature of the maxillary 1st premolar!

Question 115

Identify this molar

A. Maxillary 1st
B. Maxillary 2nd ​

Answer 115

A. Maxillary 1st

Explanation​: This maxillary molar has a Cusp of Carabelli - only present on Maxillary 1st molars

Question 116

Identify this incisor

A. Primary maxillary central incisor
B. Primary maxillary lateral incisor
C. Permanent maxillary central incisor
D. Permanent maxillary lateral incisor

Answer 116

A. Primary maxillary central incisor

Explanation​: The primary central incisor is notable for having a mesiodistal width that is GREATER than its incisogingival length. This is the only incisor in either dentition with this characteristic!

Question 117

How many pulp horns, roots and canals does the maxillary first premolar typically have?

A. 1,1,1
B. 1,2,2
C. 2,1,1
D. 2,1,2
E. 2,2,2

Answer 117

E. 2,2,2

Question 118

How many pulp horns are found in the permanent maxillary canine?

A. One
B. Two
C. Three
D. Four

Answer 118

A. One

Question 119

How many lobes does the maxillary canine develop from?

A. One
B. Two
C. Three
D. Four
E. Five

Answer 119

D. Four

Question 120

How many cusps are generally present in the permanent 1st & 2nd mandibular molars respectively?

A. 4,4
B. 5,5
C. 4,5
D. 5,4

Answer 120

D. 5,4

Question 121

From the occlusal aspect, what is the shape of the permanent mandibular 2nd molar?

A. Hexagonal
B. Rectangular
C. Trapezoidal
D. Rhomboidal

Answer 121

B. Rectangular

Question 122

Considering the nature and position of mandibular incisor interproximal contacts, which of the following statements is true?

A. The gingival embrasure is larger than the incisal embrasure
B. The gingival embrasure is the same size as the incisal embrasure
C. The gingival embrasure is smaller than the incisal embrasure

Answer 122

A. The gingival embrasure is larger than the incisal embrasure

Question 123

Compared with its permanent successors, the primary maxillary central incisor has:

A. More rounded incisal edges
B. More pronounced marginal ridges
C. A shorter root length than crown length
D. A wider mesiodistal diameter than cervicoincisal length

Answer 123

D. A wider mesiodistal diameter than cervicoincisal length

Question 124

Compared to the maxillary central incisor, the lingual fossa of the maxillary lateral incisor is:

A. Shallower
B. Deeper
C. Of the same depth

Answer 124

B. Deeper

Explanation​: The lingual fossa of the maxillary lateral incisor also often contains a pit

Question 125

Between which of the following teeth in the primary dentition is the mandibular “primate” space usually found?

A. Central incisors
B. Central & lateral incisors
C. Lateral incisors & canine
D. Canine & 1st molar
E. 1st & 2nd molars

Answer 125

D. Canine & 1st molar

Question 126

Between which of the following teeth in the primary dentition is the mandibular “primate” space usually found?

A. central incisors
B. central and lateral incisors
C. lateral incisors and canine
D. canine and 1st molar
E. first and second molars

Answer 126

D. canine and 1st molar

Question 127

All of the following incisal angles are rounded EXCEPT the:

A. Mesioincisal of the central incisor
B. Distoincisal of the central incisor
C. Mesioincisal of the lateral incisor
D. Distoincisal of the lateral incisor

Answer 127

A. Mesioincisal of the central incisor

Question 128

All anterior teeth develop from ____ lobes.

Answer 128

4

Question 129

According to the universal notation system, tooth #26 is the:

A. Permanent mandibular left lateral incisor
B. Permanent mandibular left central incisor
C. Permanent mandibular right central incisor
D. Permanent mandibular right lateral incisor

Answer 129

D. Permanent mandibular right lateral incisor

Question 130

According to the universal notation system, Tooth #15 is the:

A. Primary maxillary left 1st molar
B. Primary maxillary left 2nd molar
C. Permanent maxillary left 1st molar
D. Permanent maxillary left 2nd molar
E. Permanent maxillary left 3rd molar

Answer 130

D. Permanent maxillary left 2nd molar

Question 131

A lingual pit is most frequently found on

A. Maxillary central incisors
B. Maxillary lateral incisors
C. Mandibular central incisors
D. Mandibular lateral incisors

Answer 131

B. Maxillary lateral incisors

Question 132

Which tooth is represented by the drawing to the right:

A. Mesial view of the permanent mandibular 1st Molar
B. Mesial view of the permanent mandibular 2nd Molar
C. Mesial view of the permanent mandibular 1st Premolar
D. Distal view of the permanent mandibular 1st Molar
E. Distal view of the permanent mandibular 2nd Molar

Answer 132

D. Distal view of the permanent mandibular 1st Molar

Question 133

Which tooth has a mesiolingual developmental groove?

A. Permanent mandibular first molar
B. Permanent maxillary first molar
C. Mandibular first premolar
D. Mandibular second premolar
E. Maxillary first premolar

Answer 133

C. Mandibular first premolar

Question 134

Which statement is false? In comparing the manibular canine with the maxillary canine, the maxillary canine:

A. Has shorter crown.
B. More pronounced cingulum
C. Has a more pronounce developmental depression on the Mesial surface of the root
D. Has a cusp tip more nearly centered over the root when viewed from the Facial.

Answer 134

C. Has a more pronounce developmental depression on the Mesial surface of the root

Question 135

Which root of the maxillary first molar has two canals in a large percentage of patients?

A. lingual root
B. mesiobuccal root
D. distobuccal root
D. distal root

Answer 135

B. mesiobuccal root

Question 136

Which root and which tooth of the maxillary molars typically has two pulp canals?

Answer 136

Mesialbuccal (MB) root; maxillary 1st molar

Question 137

Which represents the general crown form of the canine as viewed from the Occlusal?

A. hexagon
B. triangular
C. rhomboidal
D. pentagonal
E. diamond shaped

Answer 137

D. pentagonal

Question 138

Which primary molar has a transverse ridge, an oblique ridge, and distiolingual groove?

A. Maxillary first
B. Maxillary second
C. Mandibular first
D. Mandibular second

Answer 138

B. Maxillary second

Question 139

Which primary molar has a transverse ridge, an oblique ridge, and a distolingual groove?

A. maxillary 1st
B. mandibular 1st
C. maxillary 2nd
D. mandibular 2nd

Answer 139

C. maxillary 2nd

Question 140

Which premolar is most likely to have only one pulp horn?

A. Maxillary first
B. Maxillary second
C. Mandibular first
D. Mandibular second

Answer 140

C. Mandibular first

Question 141

Which premolar is most likely to have a ‘Y’ shaped fissure pattern?

A. Maxillary first
B. Mandibular first
C. Maxillary second
D. Mandibular second

Answer 141

D. Mandibular second

Question 142

Which premolar has an uninterrupted transverse ridge?

A. Maxillary first
B. Maxillary second
C. Mandibular first
D. Mandibular second

Answer 142

C. Mandibular first

Question 143

Which premolar has a mesial marginal ridge at a lower level than the distal marginal ridge?

A. Maxillary first premolar
B. Maxillary second premolar
C. Mandibular first premolar
D. Mandibular second premolar

Answer 143

C. Mandibular first premolar

Question 144

Which premolar has a lingual developmental groove?

Answer 144

mandibular second premolar

Question 145

Which premolar has a lingual cusp which is 2/3 the occlusocervical height of the buccal cusp?

Answer 145

mandibular 1st premolar

Question 146

Which permanent tooth as a mesial marginal ridge developmental groove?

A. Maxillary first premolar
B. Maxillary second premolar
C. Mandibular first premolar
D. Mandibular second premolar
E. Maxillary first molar

Answer 146

A. Maxillary first premolar

Question 147

Which permanent incisor has a lingual pit?

A. maxillary central incisor
B. mandibular central incisor
C. maxillary lateral incisor
D. mandibular lateral incisor

Answer 147

C. maxillary lateral incisor

Question 148

Which of the following would be of greatest value in distinguishing between a primary mandibular second molar and permanent mandibular first molar?

A. Number of roots
B. Number of cusps
C. Arrangement of grooves on the occlusal surface
D. Comparative size of the distal cusps

Answer 148

D. Comparative size of the distal cusps

Question 149

Which of the following would be of greatest value in distinguishing between a primary mandibular 2nd molar and permanent mandibular 1st molar?

A. number of roots
B. number of cusps
C. arrangement of grooves on the occlusal surface
D. comparative size of the distal cusps

Answer 149

D. comparative size of the distal cusps

Question 150

Which of the following teeth usually have two roots which may be fused?

A. maxillary first premolar
B. mandibular first premolar
C. maxillary second premolar
D. mandibular second premolar

Answer 150

A. maxillary first premolar

Question 151

Which of the following teeth usually has two roots?

Answer 151

Maxillary 1st premolar

Question 152

Which of the following teeth is most likely to have a bifurcated root? *

A. maxillary central incisor
B. maxillary lateral incisor
C. mandibular lateral incisor
D. maxillary canine
E. mandibular canine

Answer 152

E. mandibular canine

Question 153

Which of the following teeth is broader faciolingually than mesiodistally?

A. maxillary central incisor
B. maxillary lateral incisor
C. mandibular central incisor

Answer 153

C. mandibular central incisor

Question 154

Which of the following teeth have greater mesiodistal widths than faciolinguals widths?

Answer 154

maxillary central incisors and lateral incisors

Question 155

Which of the following teeth have crowns that have greater mesial distal than faciolingual widths?

Answer 155

Maxillary lateral incisors (and central)

Question 156

Which of the following teeth have a facial cusp with the mesial cusp ridge longer than the distal cusp arm?

A. mandibular canine
B. mandibular first premolar
C. maxillary canine
D. maxillary first premolar

Answer 156

D. maxillary first premolar

Question 157

Which of the following teeth have a cusp of Carabelli?

A. primary maxillary 1st molar and permanent maxillary 1st molar
B. primary maxillary 1st molar and permanent maxillary 2nd molar
C. primary maxillary 2nd molar and permanent maxillary 1st molar
D. primary maxillary 2nd molar and permanent maxillary 2nd molar

Answer 157

C. primary maxillary 2nd molar and permanent maxillary 1st molar

Question 158

Which of the following teeth have a cusp of Carabelli
1. Permanent maxillary first molar
2. Permanent maxillary second molar
3. Permanent mandibular first molar
4. Primary mandibular first molar
5. Primary maxillary first molar
6. Primary maxillary second molar
7.Primary mandibular second molar

A. 1,2,5 and 6 only
B. 1,3,4 and 5 only
C. 1 and 2 only
D. 1 only
E. 1 and 6 only

Answer 158

E. 1 and 6 only

Question 159

Which of the following teeth has a root trunk that is 1⁄2 to 2/3 it’s root length?

A. Permanent mandibular first molar
B. Permanent maxillary first molar
C. Maxillary first premolar
D. Mandibular first premolar

Answer 159

C. Maxillary first premolar

Question 160

Which of the following teeth has a mesial cusp arm/ridge that is longer than the distal cusp arm/ridge?

A. permanent maxillary canine
B. permanent mandibular canine
C. primary maxillary canine
D. primary mandibular canine
E. both primary maxillary and mandibular canines

Answer 160

C. primary maxillary canine

Question 161

Which of the following teeth exhibits the most deviation in crown?

A. maxillary central incisor
B. maxillary lateral incisor
C. mandibular lateral incisor
D. maxillary canine
E. mandibular canine

Answer 161

B. maxillary lateral incisor

Question 162

Which of the following surfaces of perminant teeth are pit and fissure carries most likely to occur?

A. F of max 1st molar
B. L of max 1st molar
C. F of mand 1st premolar
D. L of mand 1st premolar
E. Proximal of mand I

Answer 162

B. L of max 1st molar – because of the lingual groove, at its bottom

Also – buccal of mandibular molars – buccal grooves are susceptible to pit ‘n fissure caries

Question 163

Which of the following surfaces of a tooth is always next to an adjacent tooth?

A. Distal
B. Facial
C. Palatal
D. Occlusal
E. Proximal

Answer 163

E. Proximal

Question 164

Which of the following statements is true with respect to major differences between primary and permanent teeth?

A. primary teeth have longer root trunks
B. primary teeth have proportionately larger pulp chambers with prominent pulp horns
C. the roots of the posterior primary teeth are closer together and often fused
D. permanent teeth have a markedly constricted cervix compared to primary teeth

Answer 164

B. primary teeth have proportionately larger pulp chambers with prominent pulp horns

Question 165

Which of the following statements is not correct?

A. a primary central incisor is replaced by a permanent central incisor
B. a primary canine is replaced by a permanent canine
C. a primary first molar is replaced by a permanent first molar
D. a permanent first molar is an accessional tooth

Answer 165

C. a primary first molar is replaced by a permanent first molar

Question 166

Which of the following statements is not correct?

A. The maxillary 1st Premolar has a ML developmental groove
B. Mandibular 1st Premolar has a ML developmental groove
C. Mandibular 2nd Premolar commonly has a lingual groove
D. The maxillary 2nd Premolar has a short central developmental groove

Answer 166

A. The maxillary 1st Premolar has a ML developmental groove

Question 167

Which of the following statements is correct?

Answer 167

The primary mandibular first molar is exfoliated at 9-10 years and replaced by a succendaneous tooth

Question 168

Which of the following statements is correct?

Answer 168

Mandibular 2nd premolar commonly has a lingual developmental groove (for the Y type cusps)

Question 169

Which of the following statements is correct in relation to the maxillary incisors?

A. the lingual embrasure is larger than the facial embrasure
B. the facial embrasure is larger than the lingual embrasure
C. the incisal embrasure is larger than the cervical embrasure
D. the lingual and facial embrasures are equal in size

Answer 169

D. the lingual and facial embrasures are equal in size

Question 170

Which of the following sketches illustrates the mesial view of the permanent mandibular right lateral incisor?

Answer 170

A
larger than central incisor

Question 171

Which of the following series represents the normal eruption series for primary teeth?

A. central incisor, lateral incisor, canine, 1st molar, 2nd molar
B. central incisor, lateral incisor, 1st molar, canine, 2nd molar
C. 1st molar, central incisor, lateral incisor, canine, 2nd molar
D. 1st molar, 2nd molar, central incisor, lateral incisor, canine
E. central incisor, canine, lateral incisor, 2nd molar, 1st molar

Answer 171

B. central incisor, lateral incisor, 1st molar, canine, 2nd molar

Question 172

Which of the following represents the general crown form of the canine from the Facial?

A. Hexagon
B. Triangle
C. Rhomboidal
D. Pentagonal
E. Diamond

Answer 172

D. Pentagonal

Question 173

Which of the following represents the general crown form of canine, as viewed from the labial aspect?*

A. hexagonal
B. triangular
C. rhomboidal
D. pentagonal
E. diamond-shaped

Answer 173

D. pentagonal

Question 174

Which of the following primary teeth erupts first?

A. maxillary first molar
B. mandibular first molar
C. maxillary second molar
D. mandibular second molar

Answer 174

A. maxillary first molar

Question 175

Which of the following primary molars bears the greatest resemblance to a premolar?

A. Maxillary first
B. Maxillary second
C. Mandibular first
D. Mandibular second

Answer 175

A. Maxillary first

Question 176

Which of the following premolars most typically have three rather than two cusps?

A. maxillary first premolar
B. maxillary second premolar
C. mandibular first premolar
D. mandibular second premolar

Answer 176

D. mandibular second premolar

Question 177

Which of the following premolars most frequently has one pulp horn:

Answer 177

mandibular 1st premolar

Question 178

Which of the following premolars may have a lingual developmental groove?

A. max 1st
B. max 2nd
C. mand 1st
D. mand 2nd

Answer 178

D. mand 2nd

Question 179

Which of the following premolars may have a lingual development groove?

Answer 179

mandibular second

Question 180

Which of the following premolars is most likely to develop from 5 lobes?

Answer 180

mandibular second premolar

Question 181

Which of the following pre molars may* have a L developmental groove?

A. Maxillary 1st (has Mesial Marginal Ridge Dev. Groove)
B. Maxillary 2nd (has a short central Dev. Groove on occlusal surface)
C. Mandibular 1st (has Mesiolingual Dev. Groove)
D. Mandibular 2nd

*dependent on the number of

Answer 181

D. Mandibular 2nd

Question 182

Which of the following permanent teeth has the most variable anatomy?

Answer 182

Maxillary lateral incisor

Question 183

Which of the following permanent incisors has the deepest lingual fossa?

A. maxillary central incisor
B. mandibular central incisor
C. maxillary lateral incisor
D. mandibular lateral incisor

Answer 183

C. maxillary lateral incisor

Question 184

Which of the following permanent incisors has the deepest lingual fossa?

Answer 184

maxillary lateral incisor

Question 185

Which of the following muscles is not an elevator of the mandible?

A. Medial pterygoid
B. Masseter
C. Lateral pterygoid
D. Temporalis

Answer 185

C. Lateral pterygoid

Question 186

Which of the following muscles are primarily involved in elevation of the mandible
1. Masseter
2. Medial pterygoid
3. Lateral pterygoid
4. Digastric
5. Temporalis

A. 1,2,3,4 and 5
B. 1,2 and 5 only
C. 3 and 4 only
D. 1,2,4 and 5 only

Answer 186

B. 1,2 and 5 only

Question 187

Which of the following is the normal eruption age of the permanent maxillary lateral incisors?

Answer 187

8-9 years

Question 188

Which of the following is the normal eruption age (years) of the permanent maxillary lateral incisors

A. 8-9 years
B. 7-8 years
C. 11-13 years
D. 11 months

Answer 188

A. 8-9 years

Question 189

Which of the following is not correct?

A. on all ant. teeth, the cervical embrasure space > incisal embrasure space
B. in premolar teeth, the facial embrasure space < lingual embrasure space
C. gingival papilla occupies the facial embrasure space
D. the interproximal contact areas of premolar teeth are centered occlusogingivally when viewed from the buccal

Answer 189

C. gingival papilla occupies the facial embrasure space

Question 190

Which of the following is not correct?

A. Mandibular 1st Premolar most commonly has three pulp horns.
B. Maxillary 1st Premolar usually develops from 4 lobes
C. The Premolar most likely to have a central pit is the Mandibular 2nd.
D. Maxillary 1st Premolar has a pronounce mesial concavity extending from the crown onto the root
E. The premolar most likely to have 3 roots is the maxillary 1st

Answer 190

A. Mandibular 1st Premolar most commonly has three pulp horns.

Question 191

Which of the following is not correct?

Answer 191

The gingival papilla occupies the facial embrasure space

Question 192

Which of the following is not correct?

Answer 192

in a partly erupted tooth, the clinical crown length is longer than the anatomical crown length

Question 193

Which of the following is not correct?

Answer 193

The maxillary first premolar has a mesiolingual developmental groove.

Question 194

Which of the following is not correct?

Answer 194

The mandibular first premolar most commonly has three pulp horns.

Question 195

Which of the following is NOT an anatomic feature of permanent maxillary central incisor:

A. Cingula
B. Mamelon
C. Cuspal ridges
D. Marginal ridges

Answer 195

C. Cuspal ridges

Question 196

Which of the following is normal eruption age of the permanent maxillary lateral incisors?

Answer 196

8-9 years

Question 197

Which of the following is correct? *

A. in all anterior teeth the facial embrasure space is larger than the lingual embrasure space
B. in all anterior teeth, the facial embrasure space is the same size as the lingual embrasure space
C. in all anterior teeth the facial embrasure space is smaller than the lingual embrasure space

Answer 197

B. in all anterior teeth, the facial embrasure space is the same size as the lingual embrasure space

Question 198

Which of the following is correct?

A. In all anterior teeth, the F embrasure space is larger than the L e.s.
B. In all anterior teeth, the F embrasure space is the same as the L e.s.
C. In all anterior teeth, the F embrasure space is smaller than the L e.s.

Answer 198

B. In all anterior teeth, the F embrasure space is the same as the L e.s.

Question 199

Which of the following incisors has the deepest lingual fossa

Answer 199

maxillary lateral incisor

Question 200

Which of the following cusps is not a member of the primary molar triangle or trigon found in maxillary molars?

A. Mesiofacial
B. Distofacial
C. Mesiolingual
D. Distolingual

Answer 200

D. Distolingual

Question 201

Which of the following characteristics is common to maxillary 1st and 2nd premolars?

A. The lingual cusp tip is offset to the mesial.
B. Facial and lingual cusps are equal in size and prominence
C. Mesial root concavity extends into cervical 1/3 of crown

Answer 201

A. The lingual cusp tip is offset to the mesial.

Question 202

Which of the following CEJ is the most curved in a permanent dentition?

Answer 202

mesial of the permanent maxillary central incisor

Question 203

Which of the following are correct?

A. in all anterior teeth the facial embrasure is larger that the lingual embrasure
B. in all anterior teeth facial embrasure is the same size as the lingual embrasure
C. in all anterior teeth facial embrasure is smaller than the lingual embrasure

Answer 203

B. in all anterior teeth facial embrasure is the same size as the lingual embrasure

Question 204

Which of the following are correct?

A. A line angle is where three or more surfaces of a tooth meet
B. The geometric form of the permanent mandibular canine when viewed Facially is rhomboidal.
C. When viewed from the mesial, the geometric form of the permanent mandibular 1st premolar is best described as rhomboidal in nature.

Answer 204

C. When viewed from the mesial, the geometric form of the permanent mandibular 1st premolar is best described as rhomboidal in nature.

Question 205

Which muscle of mastication inserts into the lateral aspect of the ramus of the Mandible as far as the angle of the mandible

A. Masseter
B. Medial pterygoid
C. Lateral pterygoid
D. Temporalis

Answer 205

A. Masseter

Question 206

Which muscle of mastication has a head or part that originates from the infratemporal surface of the greater wing of the sphenoid?

A. Masseter
B. Medial pterygoid
C. Lateral pterygoid
D. Temporalis

Answer 206

C. Lateral pterygoid

Question 207

Which lobe does the cingulum of the canine develop from?

Answer 207

Lingual lobe

Question 208

Which is the only incisor that has a crown that is wider mesiodistally than long incisogingivally?

A. Permanent mandibular central incisor
B. Permanent maxillary central incisor
C. Primary maxillary central incisor
D. Primary mandibular central incisor
E. Primary maxillary lateral incisor

Answer 208

C. Primary maxillary central incisor

Question 209

Which is the longest root in the maxillary first molar?

A. Lingual
B. Mesiobuccal
C. Distobuccal
D. Mesial
E. Distal

Answer 209

A. Lingual

Question 210

Which is not correct?

A. mand 1st premolar most commonly has 3 pulp horns
B. max 1st premolar develops from 4 lobes
C. the premolar most likely to have a central pit is the mand 2nd
D. max 1st premolar has a pronounced mesial concavity
E. premolar most likely to have 3 roots is the maxillary 1st

Answer 210

A. mand 1st premolar most commonly has 3 pulp horns

Question 211

Which is most likely has bifurcated root?

A. Mandibular canine
B. Maxillary canine
C. Mandibular lateral incisors

Answer 211

A. Mandibular canine

Question 212

Which is correct?

A. a line angle is where three or more surfaces meet
B. the geometric form of the perm mand canine when viewed from the facial is triangular
C. point angles are present on posterior teeth but not anterior
D. permanent mand 1st premolar is rhomboidal

Answer 212

D. permanent mand 1st premolar is rhomboidal

Question 213

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

A. Mesial
B. Distal
C. Facial

Answer 213

A. Mesial

Question 214

Which furcation in the maxillary first molar is closest to the CEJ? *

A. facial
B. mesial (closest)
C. distal (furthest)
D. lingual

Answer 214

B. mesial (closest)

Question 215

Which deciduous tooth when viewed from the facial has a mesial crown height that is twice the distal crown height?

A. mandibular 1st molar
B. mandibular 2nd molar
C. maxillary 1st molar
D. maxillary 2nd molar

Answer 215

A. mandibular 1st molar

Question 216

Which deciduous tooth when viewed from the facial has a mesial crown height that is twice the distal crown height?

A. Deciduous mandibular first molar
B. Deciduous mandibular second molar
C. Deciduous maxillary second molar
D. Deciduous maxillary second molar
E. Deciduous maxillary canine

Answer 216

A. Deciduous mandibular first molar

Question 217

Which cusps of the maxillary molars become progressively smaller starting with the first molar?

A. distal lingual cusp
B. distobuccal cusp
C. mesiolingual cusp
D. mesiobuccal cusp

Answer 217

A. distal lingual cusp

Question 218

Which cusp in maxillary molars becomes progressively smaller starting with the 1st molar?

Answer 218

distolingual (DL) cusp

Question 219

Which CEJ is the most curved in the permanent dentition?

A. Mesial of mandibular central incisor
B. Distal of mandibular central incisor
C. Mesial of maxillary central incisor
D. Distal of maxillary central incisor
E. Facial of maxillary central incisor

Answer 219

C. Mesial of maxillary central incisor

Question 220

Which arch are the 2nd premolars larger than the 1st?

A. maxillary
B. mandibular

Answer 220

B. mandibular

Question 221

Where three surfaces of a tooth meet is called a __________.

Answer 221

point angle

Question 222

When viewing a permanent maxillary canine from the mesial aspect, the line bisecting the root longitudinally passes ____ to the cusp tip

Answer 222

Lingual

Question 223

When viewing a permanent maxillary canine from the mesial aspect, one would normally expect a line bisecting the root longitudinally to pass

A. Facial to the cusp tip
B. Lingual to the cusp tip
C. Bisect the cusp tip

Answer 223

B. Lingual to the cusp tip

Question 224

When viewing a permanent mandibular canine from the mesial aspect, one would normally expect a line bisecting the root longitudinally to pass

A. Facial to the cusp tip
B. Lingual to the cusp tip
C. Bisect the cusp tip

Answer 224

A. Facial to the cusp tip

Question 225

When viewed from the occlusal aspect the surface of the maxillary first molar has 2 acute and 2 obtuse angles. The obtuse angles are located at which of the following line angles? *

A. mesiolingual and distolingual
B. mesiobuccal and mesiolingual
C. mesiolingual and distobuccal
D. mesiobuccal and distolingual
E. distolingual and distobuccal

Answer 225

C. mesiolingual and distobuccal

Question 226

When viewed from the occlusal aspect the outline of the permanent maxillary Second molar has two acute and two obtuse angles. The acute angles are

A. Mesiolingual and distofacial
B. Mesiofacial and distolingual
C. Mesiolingual and mesiofacial
D. Distolingual and distofacial

Answer 226

B. Mesiofacial and distolingual

Question 227

When viewed from the mesial, the geometric form of the crown of the maxillary first premolar is classically described as

Answer 227

trapezoidal

Question 228

When viewed from the mesial, the crown of the mandibular first premolar is classically described as

A. Trapezoidal
B. Rhomboidal
C. Square
D. Rectangular

Answer 228

B. Rhomboidal

Question 229

When viewed from the mesial the geometric form of the crown of the max 1st premolar is classically described as

Answer 229

1st + 2nd Max: Trapezoidal from proximal
1st + 2nd Mand: Rhomboidal

Question 230

When viewed from the mesial aspect, the position of the buccal tip of the mandibular first premolar is:

A. centered over the midline of the tooth
B. buccal to the midline of the tooth
C. lingual to the midline of the tooth
D. buccal to the buccal outline of the tooth

Answer 230

A. centered over the midline of the tooth

Question 231

When viewed from the mesial aspect, the position of the buccal tip of the mandibular first premolar is:

A. Centered over the midline of the tooth
B. Buccal to the midline of the tooth
C. Lingual to the midline of the tooth
D. Buccal to the buccal outline of the tooth

Answer 231

A. Centered over the midline of the tooth

Question 232

When viewed from the mesial aspect, the position of the buccal cusp tip of the mandibular 1st premolar is: *

Answer 232

centered over the midline of the tooth

Question 233

When viewed from the facial, which of the following angles is most rounded?

A. mesioincisal of max central incisor
B. distoincisal of max central incisor
C. mesioincisal of max lateral incisor
D. distoincisal of max lateral incisor

Answer 233

D. distoincisal of max lateral incisor

Question 234

When viewed from the facial, the mesial contact of a permanent mandibular canine is located in/at

Answer 234

the incisal third

Question 235

When viewed from the facial, the mesial contact of a maxillary canine located

Answer 235

the junction of the incisal and middle thirds

Question 236

When viewed from the facial, the mesial contact (height of contour) of a permanent Maxillary canine is located in (at)

A. the incisal 1/3
B. the junction of the middle and incisal thirds
C. the middle third
D. the junction of the middle and cervical thirds

Answer 236

B. the junction of the middle and incisal thirds

Question 237

When viewed from the facial, the height of contour of a permanent maxillary canine on the mesial side is located at what?

Answer 237

Junction of the middle and incisal 1/3

Question 238

When viewed from mesial, geometric outline of crown #12 is

Answer 238

Trapezoidal

Question 239

When making a left lateral movement, the prime mover of the mandible is

A. Left lateral pterygoid
B. Right lateral pterygoid
C. Right digastric
D. Left digastric
E. Left temporalis

Answer 239

B. Right lateral pterygoid

Question 240

When in its proper position relative to the plane of occlusion, the crown of the mandibular second molar inclines

A. Mesially and facially
B. Mesially and lingually
C. Distally and facially
D. Distally and lingually
E. Lingually only

Answer 240

B. Mesially and lingually

Question 241

When in its proper position relative to the plane of occlusion, the crown of a mandibular second molar inclines

A. distally and facially
B. mesially and facially
C. mesially and lingually
D. distally and lingually

Answer 241

C. mesially and lingually

Question 242

What is the permanent anterior tooth that varies in form the most

A. Maxillary lateral incisor
B. Maxillary central incisor
C. Mandibular lateral incisor
D. Mandibular central incisor
E. Mandibular canine

Answer 242

A. Maxillary lateral incisor

Question 243

What is the geometric outline of the occlusal surface of the maxillary 1st molar?

Answer 243

Rhomboidal

Question 244

What is a characteristic of all mandibular incisors?

Answer 244

They have marginal ridges on their lingual surfaces

Question 245

What are the obtuse angles (when viewed occlusally) of the maxillary 1st molar?

Answer 245

DB & ML

Question 246

What are the acute angles (when viewed occlusally) of the maxillary 1st molar?

Answer 246

MB & DL

Question 247

Using the universal notation system, tooth letter Q is replaced by

Answer 247

26

Question 248

Using the universal notation system, tooth letter N is replaced by

Answer 248

23

Question 249

Tooth position in the arch is dictated by

A. Muscle activity of the lips, tongue and cheek
B. Amount of space in the arch for the teeth
C. Presence of interproximal contacts
D. All of the above

Answer 249

D. All of the above

Question 250

This is the union of the triangular ridge of the DB cusp and the D cusp arm of the ML cusp

Answer 250

Oblique ridge

Question 251

This is the second most variable shaped tooth in the mouth (second only to the third maxillary molar

Answer 251

Maxillary lateral incisor

Question 252

There are how many developmental lobes of a permanent mandibular molar?

A. 4: 2 buccal, 2 lingual
B. 5: 3 buccal, 2 lingual
C. 3: 2 buccal, 1 lingual
D. 5 in mandibular first molar, 4 in mandibular second molar

Answer 252

D. 5 in mandibular first molar, 4 in mandibular second molar

Question 253

The two triangular ridges in the ______ premolar characteristically cross the occlusal surface forming a simple ridge called the transverse ridge.

A. maxillary first
B. maxillary second
C. mandibular first
D. mandibular second

Answer 253

C. mandibular first

Question 254

The transverse groove of the oblique ridge connects which of the following pits?

A. Distal and central
B. Distal and distofacial
C. Central and distofacial
D. Mesial and central
E. Lingual and central

Answer 254

A. Distal and central

Question 255

The term ‘occlusal table’ refers to

A. The occlusal area defined by the buccal and lingual cusp ridges
B. Refers to a plane that touches the incisal edges of the anterior teeth and the cusp tips of the posterior teeth
C. Is approximately 90-100% of the total buccolingual width of the tooth

Answer 255

A. The occlusal area defined by the buccal and lingual cusp ridges

Question 256

The smallest permanent tooth in the mouth

Answer 256

mandibular central incisor

Question 257

The size of the pulp chamber of a tooth

A. Is the same size throughout life
B. Increases with age
C. Is larger in males
D. May be affected by caries, trauma and restorative dental treatment

Answer 257

D. May be affected by caries, trauma and restorative dental treatment

Question 258

The roots of primary mandibular right first molar are flared to allow space for the development of

A. #28
B. #29
C. #30
D. #20
E. #21

Answer 258

A. #28

Question 259

The primate space is

A. A space that is found mesial to the maxillary canine and distal to the
mandibular canine in the deciduous dentition

B. The surplus space due to the difference between the combined mesiodistal widths of the permanent premolars and canines and the deciduous molars and canines

Answer 259

A. A space that is found mesial to the maxillary canine and distal to the
mandibular canine in the deciduous dentition

Question 260

The primary maxillary second molars resemble which permanent tooth

A. Permanent maxillary first molars
B. Maxillary premolars
C. Permanent mandibular first molars
D. Mandibular premolars

Answer 260

A. Permanent maxillary first molars

Question 261

The primary maxillary lateral incisor erupts at approximately

Answer 261

11 months

Question 262

The primary maxillary first molar is exfoliated at approximately

A. 10-11 years
B. 14 years
C. 6-7 years
D. 1 1/2-2 1/2 years

Answer 262

A. 10-11 years

Question 263

The primary maxillary canine is exfoliated at approximately

Answer 263

11-12 years

Question 264

The primary mandibular first molar erupts at

Answer 264

16 months

Question 265

The primary mandibular canine erupts at

A. 20 months
B. 16 months
C. 27 months
D. 9-10 years

Answer 265

A. 20 months

Question 266

The primary lateral incisor erupts at approximately

Answer 266

13 months

Question 267

The presence of interproximal contacts is important

A. To prevent food impaction
B. To avoid mesial drift
C. Dissipate forces throughout the arch (good stress distribution)
D. All of the above

Answer 267

D. All of the above

Question 268

The premolar with the occlusal groove pattern that may simulate the letter “Y” is which tooth?

Answer 268

mandibular 2nd premolar

Question 269

The premolar with the occlusal groove pattern that may simulate the letter “Y” is

A. maxillary first
B. mandibular first
C. maxillary second
D. mandibular second

Answer 269

D. mandibular second

Question 270

The predominant sequence of eruption of deciduous teeth is

A. Central incisor, lateral incisor, canine, first molar, second molar
B. Central incisor, lateral incisor, canine, second molar, first molar
C. First molar, central incisor, lateral incisor, canine, second molar
D. First molar, central incisor, lateral incisor, second molar, canine
E. Central incisor, lateral incisor, first molar, canine, second molar

Answer 270

E. Central incisor, lateral incisor, first molar, canine, second molar

Question 271

The plane of occlusion is a

A. Midsaggital plane that bisects the dental arch
B. Plane that extends across the arch and touches the cusp and incisal edges of all the teeth
C. Convex upwards

Answer 271

B. Plane that extends across the arch and touches the cusp and incisal edges of all the teeth

Question 272

The permanent maxillary first molar

A. Two roots: the mesial root and the distal root
B. Two roots: the buccal root and the lingual root
C. Three roots: the mesiolingual, the mesiofacial and the distal
D. Three roots: the mesiofacial, the distofacial and the lingual

Answer 272

D. Three roots: the mesiofacial, the distofacial and the lingual

Question 273

The permanent maxillary central incisors have a

A. Facial and slight distal inclination
B. Facial and mesial inclination
C. Lingual and mesial inclination
D. Lingual and distal inclination
E. Vertical – have no inclination

Answer 273

A. Facial and slight distal inclination

Question 274

The permanent mandibular second molar differs from the permanent mandibular first molar in number of

A. cusps
B. roots
C. lingual grooves
D. marginal ridges

Answer 274

A. cusps

Question 275

The outline of the crowns of all posterior teeth from the facial and lingual views is best described as what?

Answer 275

Trapezoidal

Question 276

The occlusal table forms what percentage of the total buccolingual width of the tooth

A. 10-20%
B. 20-30%
C. 50-60%
D. 90-100%

Answer 276

C. 50-60%

Question 277

The oblique ridge of the maxillary first molar is formed by union of

A. The triangular ridge of the distobuccal cusp and distal cusp ridge of the
mesiolingual cusp
B. The triangular ridge of the distobuccal cusp and the triangular ridge of mesiolingual cusp
C. The mesial cusp ridge of the distobuccal cusp and the triangular ridge the mesiolingual cusp
D. The distal cusp arm of the mesiobuccal cusp and the triangular ridge of the distolingual cusp

Answer 277

A. The triangular ridge of the distobuccal cusp and distal cusp ridge of the
mesiolingual cusp

Question 278

The morphology of the mandibular lateral incisor when compared to the mandibular central incisor is

A. identical but larger
B. almost identical but smaller
C. almost identical but larger
D. the same

Answer 278

C. almost identical but larger

Question 279

The mesiolingual cusp of a maxillary first molar is separated from the distolingual cusp by

A. the distal developmental groove
B. the distolingual developmental groove
C. the central developmental groove
D. the lingual developmental groove

Answer 279

D. the lingual developmental groove

Question 280

The mesiolingual (ML) cusp of the maxillary 1st molar is separated from the distolingual (DL) cusp by what?

Answer 280

Lingual developmental groove

Question 281

The mesiolingual (developmental) groove

A. Separates the mesial marginal ridge from the lingual cusp
B. Separates the mesiolingual cusp from the distolingual cusp
C. Separates the mesiolingual cusp from the mesial cusp
D. Separates the mesial cusp from the lingual cusp

Answer 281

A. Separates the mesial marginal ridge from the lingual cusp

Question 282

The mesiolateral curvature of the plane of occlusion is called

A. The curve of Spee
B. The curve of Wilson
C. The curve of Bennet

Answer 282

B. The curve of Wilson

Question 283

The mesiodistal diameter of the crowns of all permanent teeth is narrower on the Lingual aspect than on the facial aspect of the crown, except for one tooth. That Tooth is

A. Maxillary first premolar
B. Mandibular second premolar
C. Permanent maxillary first molar
D. Mandibular first premolar
E. Permanent mandibular first molar

Answer 283

C. Permanent maxillary first molar

Question 284

The mesiodistal (M-D) measurement of the crown is greater than the faciolingual (F-L) measurement on which of the following teeth

A. Maxillary molars
B. Maxillary premolars
C. Mandibular incisors
D. Mandibular molars

Answer 284

D. Mandibular molars

Question 285

The mesial marginal ridge groove is found in which tooth?

Answer 285

Maxillary 1st premolar

Question 286

The mandibular tooth that may have four root canals is

A. mandibular second premolar
B. mandibular first molar
C. mandibular second molar
D. mandibular third molar

Answer 286

B. mandibular first molar

Question 287

The mandibular second molar develops from how many lobes

A. One
B. Two
C. Three
D. Four

Answer 287

D. Four

Question 288

The mandibular molar root which usually has one canal, but may have two, is

A. the mesial root of a mandibular first molar
B. the distal root of a mandibular first molar
C. the mesial root of a mandibular second molar
D. the distal root of a mandibular second molar

Answer 288

B. the distal root of a mandibular first molar

Question 289

The level of the bifurcation in the mandibular first molar occurs closest to the CEJ on which aspect of the tooth

A. Mesial
B. Distal
C. Lingual
D. Buccal

Answer 289

D. Buccal

Question 290

The interdental papilla is located in the

A. Facial embrasure
B. Lingual embrasure
C. Cervical embrasure
D. Occlusal embrasure

Answer 290

C. Cervical embrasure

Question 291

The geometric outline of the mesial aspect of the maxillary incisor is represented by which of the following

Answer 291

triangle

Question 292

The geometric outline of the facial and lingual surfaces of all posterior teeth is represented by which of the following geometric figures.

A. Rhomboid
B. Trapezoid
C. Ovoid

Answer 292

B. Trapezoid

Question 293

The geometric form of the maxillary premolars when viewed from the mesial is

A. Triangular
B. Hexagonal
C. Rhomboidal
D. Trapezoidal

Answer 293

D. Trapezoidal

Question 294

The first succedaneous tooth to erupt is

A. Permanent mandibular first molar
B. Permanent maxillary first molar
C. Permanent mandibular central incisor
D. Permanent mandibular lateral incisor
E. Permanent maxillary central incisor

Answer 294

C. Permanent mandibular central incisor

Question 295

The first sign of tooth development is seen in the embryo at ______

A. 6-7 days
B. 6-7 weeks
C. birth
D. 6-7 months

Answer 295

B. 6-7 weeks

Question 296

The first sign of tooth development is seen in the embryo at (i.u)

A. 6-7 days
B. 6-7 weeks
C. 6-7 months
D. 13-16 weeks

Answer 296

B. 6-7 weeks

Question 297

The first primary tooth to erupt into the oral cavity is

Answer 297

primary mandibular central incisor

Question 298

The first non-succedenous tooth to erupt is what?

Answer 298

Mandibular 1st molar

Question 299

The first evidence of calcification of the permanent maxillary first molar occurs at

Answer 299

birth

Question 300

The first evidence of calcification of the mandibular central incisor is seen at

Answer 300

3-4 months

Question 301

The fifth or accessory cusp of the maxillary first molar is called

A. distal cusp
B. mesial-lingual cusp
C. the cusp of Carabelli
D. the cusp of Carvellini

Answer 301

C. the cusp of Carabelli

Question 302

The facial surface of the maxillary canine is bounded by ___ borders.

A. 3
B. 4
C. 5
D. 6

Answer 302

C. 5

Question 303

The erupted dentition of a normally developed 9 year old consists of

Answer 303

12 primary and 12 permanent teeth

Question 304

The erupted dentition of a normally developed 7 year old child (7 years 0 days) consists of

A. 4 permanent teeth and 20 primary teeth
B. 6 permanent teeth and 20 primary teeth
C. 6 permanent teeth and 18 primary teeth
D. 10 permanent teeth and 10 primary teeth

Answer 304

C. 6 permanent teeth and 18 primary teeth

Question 305

The entire crown of the tooth including part that may not be visible in the oral cavity is the _____ _____

Answer 305

anatomic crown

Question 306

The embrasures of the posterior teeth are called:

A. occlusal, gingival, buccal, and lingual
B. incisal, gingival, buccal, and lingual

Answer 306

A. occlusal, gingival, buccal, and lingual

Question 307

The embrasure spaces around the posterior teeth are called

A. Occlusal, cervical, mesial and distal
B. Occlusal, cervical, facial and lingual
C. Incisal, cervical, facial and lingual
D. Incisal, occlusal, mesial and distal

Answer 307

B. Occlusal, cervical, facial and lingual

Question 308

The elevation of the gingival tissue found lingual to the embrasure between the maxillary central incisors is the:

A. median rugae
B. lingual frenum
C. incisive papilla
D. incisive tubercle

Answer 308

C. incisive papilla

Question 309

The distal height of contour (facial view) of the permanent maxillary central incisor is located

A. Incisal 1/3
B. Middle 1/3
C. Junction of incisal and middle 1/3’s
D. Junction of incisal and cervical 1/3’s

Answer 309

C. Junction of incisal and middle 1/3’s

Question 310

The development of the root of maxillary central incisor is completed at

Answer 310

10 years

Question 311

The cusp tip of a canine develops from the

A. Middle labial lobe
B. Mesial-labial lobe
C. Distal-labial lobe
D. Lingual lobe

Answer 311

A. Middle labial lobe

Question 312

The crown of the permanent maxillary first molar is completely calcified (crown is completely formed) at

Answer 312

2.5-3 years

Question 313

The contact area on the mesial surface of the mandibular canine is located at the ____

Answer 313

Incisal 1/3

Question 314

The cingulum of a canine develops from the

Answer 314

lingual lobe

Question 315

The cervical ridge would stand out most prominently as a distinct entity on which of the following primary maxillary molar?

A. mesiofacial of the 1st
B. distofacial of the 1st
C. mesiofacial of the 2nd
D. distofacial of the 2nd

Answer 315

A. mesiofacial of the 1st

Question 316

The CEJ in a premolar has the greatest curvature toward the occlusal on which surface?

Answer 316

Mesial

Question 317

The buccal cusps of the mandibular teeth and the lingual cusps of the maxillary teeth are

A. Supporting or stamp or functional cusps
B. Guiding or shearing or non-functional cusps

Answer 317

A. Supporting or stamp or functional cusps

Question 318

The average length of the maxillary central incisor (crown and root) is

A. 24 mm
B. 22 mm
C. 27 mm
D. 18 mm

Answer 318

A. 24 mm

Question 319

The anteroposterior curvature of the occlusal plane is referred to as the curve of

A. Wilson
B. Spee
C. Frankfort
D. Alatragal

Answer 319

B. Spee

Question 320

The anterior tooth most likely to have a bifurcated root is the permanent

A. maxillary canine
B. mandibular canine
C. maxillary central incisor
D. mandibular central incisor

Answer 320

B. mandibular canine

Question 321

Sequence the cusps of permanent maxillary first molar from largest to smallest:
1. Mesiofacial
2. Distofacial
3. Mesiolingual
4. Distolingual
5. Cusp of Carabelli
6. Distal cusp

A. 1,2,3,4,5
B. 1,2,3,4,6
C. 3,1,2,4,5
D. 3,1,2,4,6
E. 3,5,4,1,2

Answer 321

C. 3,1,2,4,5

Question 322

Put the cusps in order from largest to smallest for the maxillary 1st molar

Answer 322

ML > MB > DB > DL > 5th cusp

Question 323

On which of the following surfaces of secondary dentition do you see pit and fissure caries?

A. Facial of Maxillary 1st Molar
B. Lingual of maxillary 1st Molar
C. Facial of Mandibular 1st Premolar
D. Lingual of mandibular 1st premolar
E. Proximal surfaces of mandibular incisors

Answer 323

B. Lingual of maxillary 1 Molar

Question 324

On the crown of the maxillary canine, the height of contour is normally located in the cervical 1/3 of which of the following surfaces? *

A. labial
B. lingual
C. both labial and lingual
D. neither labial or lingual

Answer 324

C. both labial and lingual

Question 325

On maxillary canine crown, height of contour is in the cervical 1/3 on which of the following surfaces:

A. labial
B. lingual
C. both
D. neither

Answer 325

C. both

Question 326

Mesial marginal ridge groove is found in?

Answer 326

Maxillary 1st premolars

Question 327

Mandibular 1st premolar: when viewed from the mesial aspect, the position of the buccal cusp tip of the mandibular first premolar is:

Answer 327

in line over root

Question 328

Mandibular 1st premolar: when viewed from the mesial aspect, the lingual cusp tip of the mandibular first premolar is:

Answer 328

in line with lingual border

Question 329

Is the following true or false concerning the mandibular 2nd premolar? It is the only tooth that has a mesial marginal ridge lower than the distal marginal ridge

A. True
B. False

Answer 329

B. False

Question 330

In which tooth is the mesial cusp arm longer than the distal?

Answer 330

maxillary 1st premolar and deciduous maxillary canine

Question 331

In which premolar is the mesial marginal ridge at a lower level than the distal marginal ridge *

A. mandibular first premolar
B. mandibular second premolar
C. maxillary first premolar
D. maxillary first premolar

Answer 331

A. mandibular first premolar

Question 332

In which of the following is the mesial cusp arm longer than the distal cusp arm?

A. Permanent maxillary canine
B. Permanent mandibular canine
C. Facial cusp of the permanent maxillary second premolar
D. Facial cusp of the permanent maxillary first premolar
E. Facial cusp of the permanent mandibular first premolar

Answer 332

D. Facial cusp of the permanent maxillary first premolar

Question 333

In which of the following cusps is the mesial slope of the cusp (mesial cusp arm/ridge) longer than the distal slope of the cusp?

A. permanent maxillary canine
B. permanent mandibular canine
C. buccal cusp of the permanent maxillary first premolar
D. lingual cusp of the permanent mandibular first premolar

Answer 333

C. buccal cusp of the permanent maxillary first premolar

Question 334

In which of the following canines is the mesial slope of the cusp (mesial cusp arm, mesial cusp ridge) longer than the distal slope of the cusp?

A. Permanent maxillary canine
B. Permanent mandibular canine
C. Primary maxillary canine
D. Primary mandibular canine

Answer 334

C. Primary maxillary canine

Question 335

In the mandibular first premolar, which groove separates the mesial marginal ridge from the mesial ridge of the lingual cusp?

A. mesial groove
B. mesial lingual groove
C. central groove
D. distal groove

Answer 335

B. mesial lingual groove

Question 336

In comparing the mandibular canine with the maxillary canine, the mandibular canine

A. Has a more prominent bulkier cingulum
B. Has a more prominent lingual ridge
C. Well defined lingual pits
D. More accentuated marginal ridges
E. Has an incisal ridge that is 1/5 clinical crown height

Answer 336

E. Has an incisal ridge that is 1/5 clinical crown height

Question 337

In cervical cross section, the root of the maxillary central incisor is described as

A. triangular
B. conical
C. ovoid
D. rhomboidal
E. broader mesiodistally on the lingual than on the facial

Answer 337

A. triangular

Question 338

In an ideal arrangement of teeth (Angles class I), (centric occlusion), the distobuccal cusp of the permanent mandibular first molar occludes in the

A. Central fossa of the opposing maxillary first molar
B. Distal fossa of the opposing maxillary first molar
C. On the oblique ridge
D. On the mesial marginal ridge area

Answer 338

A. Central fossa of the opposing maxillary first molar

Question 339

In a tooth that is partially erupted, the clinical crown height is ____________ than the anatomical crown height.

A. Longer
B. Shorter
C. Equal to

Answer 339

B. Shorter

Question 340

In a patient with crowding of the dental arch (ie: teeth too big for the amount of space in the arch), which of the following teeth in the maxilla would you most expect to be crowded/displaced out of the arch

A. Maxillary canine
B. Maxillary first premolar
C. Maxillary second premolar

Answer 340

A. Maxillary canine

Question 341

In a patient with crowding of the dental arch (ie: teeth too big for the amount of space in the arch), which of the following teeth in the mandible would you expect to be crowded/displaced out of the arch?

A. Permanent mandibular canine
B. Mandibular first premolar
C. Mandibular second premolar

Answer 341

C. Mandibular second premolar

Question 342

In a molar, where do root canals usually join the pulp chamber?

A. At the level of furcation
B. At varying levels, depending on age
C. With in middle 1/3 of crown
D. Within cervical 1/3 of the crown
E. Apical to the CEJ

Answer 342

E. Apical to the CEJ

Question 343

In a longitudinal section on a premolar tooth, the enamel is thickest in the

A. cervical third
B. middle third
C. occlusal third
D. junction of the middle and occlusal third

Answer 343

C. occlusal third

Question 344

If a maxillary 1st molar has a fourth pulp canal, it is located in which of the following roots:

A. Mesiofacial (or MB)
B. Distofacial (or DB)
C. Palatal (or lingual)

Answer 344

A. Mesiofacial (or MB)

Question 345

If a max 1st molar has a 4th pulp canal it is located in the

Answer 345

mesiofacial root

Question 346

Identify the anterior tooth that most frequently exhibits a bifurcated root and Identify the two roots

A. maxillary canine-mesial and distal
B. maxillary canine-facial and lingual
C. mandibular central incisor-facial and lingual
D. mandibular canine-mesial and distal
E. mandibular canine-facial and lingual

Answer 346

E. mandibular canine-facial and lingual

Question 347

How soon after the eruption of a permanent tooth is the apex fully formed?

A. Immediately
B. 3 months
C. 2-3 years
D. 5-6 years

Answer 347

C. 2-3 years

Question 348

How much root development is completed when a tooth first erupts into the oral cavity?

A. the root is completely formed
B. the root has not yet begun to develop
C. one half of the root is formed
D. the root has just begun to form

Answer 348

C. one half of the root is formed

Question 349

How many pulp horns, roots, and pulp canals does the L max. 1st premolar have?

Answer 349

2; 2; 2

Question 350

How many primary teeth does a normally developed 6 year old child have?

Answer 350

20

Question 351

How many lobes does the maxillary 1st molar develop from?

Answer 351

5 (2 buccal, 3 lingual)

Question 352

How many lobes does the max 2nd molar develop from?

Answer 352

5

Question 353

How do the maxillary central and lateral incisors mainly differ?

Answer 353

Mesiodistal and incisocervical dimensions

Question 354

From the facial view, the distal contact of the maxillary lateral incisor is located in the

Answer 354

middle 1/3

Question 355

From the facial view, the distal contact of the mandibular lateral incisor is located in the

Answer 355

incisal 1/3

Question 356

From the facial aspect, the distal height of contour (IP contact) of the permanent maxillary central incisor is located

Answer 356

middle 1/3

Question 357

From the facial aspect, the distal height of contour (interproximal contact) of the permanent maxillary central incisor is located

Answer 357

junction of the incisal and middle 1/3s

Question 358

From anterior to posterior (ie: first to third), which cusp of the maxillary cusps gets progressively smaller and may even disappear

A. Mesiolingual
B. Mesiobuccal
C. Distolingual
D. Distofacial

Answer 358

C. Distolingual

Question 359

From a facial view, the mesial and distal contact area of the mandibular central Incisors are located in

A. both are located in the incisal 1/3
B. both are located in the middle 1/3
C. the incisal 1/3 on the mesial and the middle 1/3 on the distal
D. the incisal 1/3 on the mesial and junction of the incisal and middle 1/3’s on the distal

Answer 359

A. both are located in the incisal 1/3

Question 360

From a facial view, the maxillary second molar has it’s MF root apex in line with

A. Facial groove
B. DF line angle
C. DF cusp tip
D. MF cusp tip

Answer 360

A. Facial groove

Question 361

From a facial view, the distal contact of the permanent mandibular canine is located in (at)

A. Incisal 1/3
B. Middle 1/3
C. Junction of incisal and middle 1/3’s
D. Junction of incisal and cervical 1/3’s

Answer 361

B. Middle 1/3

Question 362

First evidence of calcification of the permanent mandibular second molar occurs at

A. 3-4 months
B. 10-12 months
C. 1 1/2-2 1/2 years
D. 2 1/2-3 years
E. Birth

Answer 362

D. 2 1/2-3 years

Question 363

Considering the nature and position of the mand incisors interproximal contacts, which statement is true?

A. Gingival embrasure is larger than incisal embrasure
B. Facial and lingual embrasures are the same on anterior teeth.
C. Both A and B

Answer 363

C. Both A and B

Question 364

Considering the nature and position of mandibular incisor interproximal contacts, which of the following statements is (are) true: *

A. the gingival embrasure is larger than the incisal embrasure
B. the gingival embrasure is the same size as the incisal embrasure
C. the gingival embrasure is smaller than the incisal embrasure

Answer 364

A. the gingival embrasure is larger than the incisal embrasure

Question 365

Considering the nature and position of Mandibular incisor interproximal contacts, which of the following statements are true?

A. the gingival embrasure is larger than the incisal embrasure
B. the gingival embrasure is the same size as the incisal embrasure
C. the gingival embrasure is smaller than the incical embrasure

Answer 365

A. the gingival embrasure is larger than the incisal embrasure

Question 366

Considering the nature and position of mandibular incisor interproximal contacts, which of the following are true?

A. The IP contacts tend to be equidistant from the facial and lingual surfaces of the teeth
B. The IP contacts occur in the incisal 1/3 of the tooth
C. The gingival embrasure is larger than the incisal embrasure
D. All of the above

Answer 366

D. All of the above

Question 367

Compared with its permanent successors, the primary maxillary central incisors are distinguished by:

A. more rounded incisal edges
B. more pronounced marginal ridges
C. a wider mesial/distal diameter than cervicoincisal length

Answer 367

C. a wider mesial/distal diameter than cervicoincisal length

In this case, both A and C were correct but C was “the most correct answer”

Question 368

Compared to mand canines, the max canines

A. shorter crown height
B. more pronounced cingulum
C. cusp tip more centered than mandibular
D. All of the above

Answer 368

D. All of the above

Question 369

Calcification of the crown of the permanent mandibular first molar is usually complete by

A. Birth
B. 2 1/2 to 3 years
C. 6 months
D. Not until 6 years of age

Answer 369

B. 2 1/2 to 3 years

Question 370

Between which of the following teeth in the primary dentition is mandibular primate space usually found?

A. Between Centrals
B. Canine & 1st Molar
C. Between 1st and 2nd molars
D. Between lateral incisor and canine

Answer 370

B. Canine & 1st Molar

Question 371

Between which is the primate space?

A. central incisors
B. central and lateral incisors
C. lateral incisors and canine (maxillary)
D. canine and 1st molar (mandibular)
E. 1st and 2nd molar

Answer 371

C. lateral incisors and canine (maxillary)
D. canine and 1st molar (mandibular)

Question 372

Because of the presence of a fissured groove, cavity preparation most frequently need to be extended from the occlusal surface to the:

A. Facial surface of maxillary molars
B. Lingual surface of maxillary molars
C. Lingual surface of the mandibular molars
D. Lingual surface of mandibular first premolars

Answer 372

B. Lingual surface of maxillary molars

Question 373

At the time of eruption of a permanent tooth, the root of the tooth is

A. 1/3 developed
B. 1/2 developed
C. 2/3 developed
D. Undeveloped

Answer 373

B. 1/2 developed

Question 374

Anterior tooth most likely to have bifurcated root (F and L)

Answer 374

Mandibular canine

Question 375

After eruption, the maxillary first molar root development is completed by

A. 9-10 years old
B. 2-3 years old
C. 15 years old
D. 6-7 years old

Answer 375

A. 9-10 years old

Question 376

According to the universal notation, tooth #15 is what?

Answer 376

Permanent maxillary left 2nd molar

Question 377

According to the universal notation for identity in primary teeth, tooth letter M is

Answer 377

primary left mandibular canine

Question 378

According to the universal notation for identifying primary tooth, tooth letter R is

Answer 378

primary mandibular right canine

Question 379

A maxillary right canine may be distinguished from a maxillary left canine because:

Answer 379

The distal 1/2 of the canine crown shows more convexity than the mesial 1/2 as seen from the facial

Question 380

A permanent mandibular canine is _____ than a permanent maxillary canine

A. Narrower
B. Wider

Answer 380

A. Narrower

Question 381

A lingual pit is most frequently found on which tooth?

Answer 381

Maxillary lateral incisor

Question 382

Which of the following teeth have crown dimensions (diameters) that are broader mesio-distally than facio-lingually?

Answer 382

maxillary incisors

Question 383

When viewed from the mesial, the geometric form of the permanent mandibular first premolar is best described as

Answer 383

rhomboidal in nature

Question 384

The first primary tooth to erupt in the oral cavity is the

Answer 384

primary mandibular central incisor

Question 385

When viewed from the Mesial, the geometric form of the crown of the maxillary 1st premolar is classically described as:

A. rectangle
B. rhomboid
C. trapezoid
D. square
E. ovoid

Answer 385

C. trapezoid

Question 386

The first sign of tooth development is seen in the embryo at

Answer 386

6-7 weeks i.u.

Question 387

Rank the roots of the maxillary 1st molar in order from largest to smallest

Answer 387

palatal > mesiobuccal > distobuccal

Question 388

From a facial view, the mesial contact area of the mandibular permanent canine is located

Answer 388

in the incisal 1/3