Oral Anatomy

Question 1

What tooth has the most proprioceptors?

Answer 1

Canines because of canine guidance

Question 2

What nerve innervates primary maxillary molars?

Answer 2

MSA nerve

Question 3

Primary teeth are ____ mineralized than permanent teeth, resulting in more wear.

Answer 3

less

Question 4

What is the space difference between primary teeth and their permanent successors?

Answer 4

2-4 mm

Question 5

What is indicated if mamelons are seen beyond age 10?

Answer 5

anterior open bite

Question 6

When is calcification of primary roots completed?

Answer 6

ages 3-4

Question 7

What is the eruption pattern of the primary dentition?

Answer 7

centrals, laterals, 1st molars, canines, 2nd molars

• lower before upper except for laterals
• front to back except for canines

Question 8

Between what teeth do you find the maxillary primate space?

Answer 8

between laterals and canines

Question 9

Between what teeth do you find the mandibular primate space?

Answer 9

between the canine and 1st molar

Question 10

What causes spacing of the anterior teeth?

Answer 10

growth of the dental arches

Question 11

What is the direction of the enamel rods in the cervical third of a primary tooth?

Answer 11

enamel rods are in an occlusal direction

Question 12

Primary molar roots are __ ____ than permanent molars

Answer 12

more divergent

Question 13

Do primary molars have an identifiable root trunk?

Answer 13

Not really; they are often very small

Question 14

What tooth has the smallest faciolingual crown dimension?

Answer 14

primary mandibular central incisor

Question 15

What teeth are the most bilaterally symmetrical?

Answer 15

primary and secondary mandibular central incisors

Question 16

If delayed resorption of primary incisors occurs, the secondary teeth erupt _____.

Answer 16

lingually

Question 17

Do primary central incisors have a prominent cervical ridge on the facial and lingual?

Answer 17

yes

Question 18

Is the mesioincisal slope on a primary canine longer or shorter than the distoincisal slope from the facial view?

Answer 18

longer

Question 19

Is the cusp tip on a primary canine more mesial or distal?

Answer 19

Distal, because the mesioincisal slope is longer than the distoincisal

Question 20

What tooth in the permanent dentition does the primary maxillary first molar resemble?

Answer 20

a permanent premolar (not always)

Question 21

The roots on a maxillary primary first molar resemble….

Answer 21

a typical secondary maxillary molar

Question 22

What cervical ridge is most prominent for primary maxillary teeth?

Answer 22

mesiofacial surface of the primary first molar

Question 23

The primary maxillary second molar is the only tooth in the primary dentition that generally has ______.

Answer 23

an oblique ridge

Question 24

The primary second molar is the only one to have ____, ______, and _____.

Answer 24

oblique ridge, transverse ridge, and distolingual groove

Question 25

the Primary second molar generally has a cusp of Carabelli. True or False?

Answer 25

True

Question 26

The last of the primary teeth to erupt is what?

Answer 26

maxillary secondary molar

Question 27

Does the primary second molar have more cusps than the primary first molar?

Answer 27

yes

Question 28

What primary tooth has the most distinctly prominent facial cervical ridge?

Answer 28

mandibular first molar

Question 29

from the facial view on the primary mandibular first molar, what third of the tooth contains the most apical portion of the CEJ?

Answer 29

the mesial 1/3

Question 30

What is special about the fossa on a primary mandibular first molar?

Answer 30

It is a distal triangular shaped fossa | some call it a distal or main fossa

Question 31

Which tooth in the primary dentition has the most distinctive transverse ridge?

Answer 31

mandibular first molar

Question 32

Which tooth does the primary first molar represent from the permanent dentition?

Answer 32

It doesn't look like any teeth in the permanent dentition

Question 33

Which cusp on a primary mandibular first molar is the highest and sharpest?

Answer 33

mesiolingual cusp

Question 34

What is the function of the incisors?

Answer 34

biting

Question 35

What tooth has the greatest faciolingual axial inclination?

Answer 35

Maxillary central incisor

Question 36

Which tooth has the greatest cervical curvature of the CEJ of any other tooth?

Answer 36

mesial side of maxillary central incisor

Question 37

General of CEJ: | The CEJ dips deeper on:

Answer 37

anterior teeth than posterior teeth maxillary than mandibular mesial than distal

Question 38

Which anterior tooth is wider mesiodistally than faciolingually?

Answer 38

maxillary central incisor

Question 39

Which anterior tooth has the greatest mesiodistal crown dimension?

Answer 39

maxillary central incisor

Question 40

Which tooth has almost identical measurements of incisocervical and mesiodistal dimensions?

Answer 40

maxillary central incisor

Question 41

What happens to the lingual embrasure between the maxillary central and maxillary incisor due to placement of the contact area?

Answer 41

The lingual embrasure becomes larger than the facial embrasure (true for most teeth)

Question 42

Is the incisal embrasure between the two maxillary centrals larger or smaller than the embrasure between a maxillary central and lateral?

Answer 42

The incisal embrasure is smaller between the two centrals

Question 43

Which tooth has the most crown SHAPE variations?

Answer 43

maxillary lateral incisor

Question 44

Which tooth (beside 3rd molars) has the most deviation in crown morphology?

Answer 44

maxillary lateral incisors

Question 45

Which tooth is most often in abnormal relation and contact with adjacent teeth?

Answer 45

maxillary lateral incisor

Question 46

Except for 3rd molars, which tooth is most often congenitally missing?

Answer 46

maxillary lateral incisor

Question 47

Which non-molar tooth most frequently has a mesial and distal pulp horn?

Answer 47

maxillary central incisor

Question 48

Which non-molar tooth is least likely to have a bifurcated root?

Answer 48

maxillary central incisor

Question 49

Which tooth is most likely to demonstrate lingual pit caries?

Answer 49

maxillary lateral incisor

Question 50

Which anatomical feature on the maxillary lateral incisor complicates root planning?

Answer 50

distolingual groove

Question 51

Which tooth has the greatest cervical prominence of any anterior tooth?

Answer 51

Maxillary canine

Question 52

What is the positioning of the maxillary canine from the proximal view?

Answer 52

nearly vertical axis

Question 53

Which tooth has the greatest overall total tooth length?

Answer 53

maxillary canine

Question 54

Which tooth has the longest root of any tooth in the mouth?

Answer 54

maxillary canine

Question 55

Which tooth has the greatest faciolingual dimension of any anterior tooth?

Answer 55

maxillary canine

Question 56

What third of the tooth is the distal contact of the maxillary canine found?

Answer 56

middle third

Question 57

Idiom to remember contact location of anterior teeth.

Answer 57

I Just Jacked Michael Jackson's Moped

Question 58

Which tooth has the potential of contacting both an anterior tooth and posterior tooth?

Answer 58

Canine

Question 59

Where is the cusp tip of the maxillary canine relative to the lingual axis?

Answer 59

facial to the lingual axis

Question 60

During formation, which lobe of the maxillary canine includes the cusp tip?

Answer 60

middle lobe

Question 61

Is facial or lingual viewed more from the incisal view of a maxillary canine?

Answer 61

lingual

Question 62

Why does the maxillary canine not look symmetric from mesial to distal?

Answer 62

It has a distal buldge

Question 63

What is the crown form shape of a maxillary canine from the facial view?

Answer 63

pentagonal

Question 64

Which tooth in the mouth has the straightest mesial alignment from crown to root?

Answer 64

mandibular canine

Question 65

Which surface of the mandibular canine is almost parallel to the long axis of the tooth?

Answer 65

mesial surface

Question 66

Which tooth has the longest crown dimension of any other tooth?

Answer 66

mandibular canine

Question 67

Is the cingulum less or more prominent on a mandibular canine than the maxillary canine?

Answer 67

less prominent

Question 68

Is the mandibular canine or maxillary canine smaller mesiodistally?

Answer 68

mandibular canine is smaller mesiodistally because the maxillary canine has a distal bulge.

Question 69

Which anterior tooth is most likely to have a bifurcated root?

Answer 69

mandibular canine - one facial and one lingual

Question 70

Which tooth has the longest root of any mandibular tooth?

Answer 70

mandibular canine

Question 71

What is the shape of mandibular canine root in cross-section?

Answer 71

irregular, flat oval

Question 72

What is the shape of the mandibular canine in cross-section at the CEJ?

Answer 72

It is ovoid shape, but wider mesiodistally at the labial side

Question 73

Are contact areas of the mandibular canine more incisal or gingival compared to the maxillary canine?

Answer 73

incisal

Question 74

From incisal to apical end, what shape does the mandibular canine make?

Answer 74

it is convex, making a "C" shape

Question 75

Where is the position of the incisal edge of the mandibular canine relative to the long axis of the tooth?

Answer 75

it is lingual to the long axis of the tooth

Question 76

Which tooth has the most pronounced developmental marginal groove of any maxillary tooth?

Answer 76

maxillary first premolar

Question 77

Why is it difficult to adapt a matrix band to the maxillary first premolar?

Answer 77

mesial concavity on the crown that extends to the root

Question 78

What is the shape of the cervical cross-section of the maxillary first premolar?

Answer 78

kidney shaped

Question 79

In non-molar teeth, which tooth is most likely to have 3 roots?

Answer 79

maxillary first premolar

Question 80

True or False: The facial cusp of the maxillary first premolar is offset to the distal.

Answer 80

True, it has a longer mesiofacial cusp ridge than the distofacial ridge.