Dental Anatomy Facts Part 1

Question 1

Which are less mineralized and more worn

Primary or Permanent teeth

Answer 1

Primary

Question 2

The difference in space from primary to permanent dentition in the arch

Answer 2

2-4 mm

Question 3

Mamelons that remain beyond what age generally indicate what condition

Answer 3

beyond age 10 indicate an open bite

Question 4

Calcification of primary roots is normally completed by what age

Answer 4

3-4 years of age

Question 5

Usual pattern of eruption for primary teeth

additional notes
exception to rule

Answer 5

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

front to back except canine
Lowers before uppers except laterals

Question 6

Primate space is where on maxillary primary dentition

Answer 6

between lateral and canine

Question 7

Mandibular primary primate space

Answer 7

between canine and first molar

Question 8

Spacing in primary anterior teeth is most frequently caused by

Answer 8

growth of dental arches

Question 9

The direction of primary (deciduous) enamel rods in cervical third

Answer 9

occlusal direction

outer (or opposite) direction for permanent enamel rods

Question 10

A main difference in primary molar roots from permanent

Answer 10

more divergent roots

Question 11

What small or lacking in primary molars

Answer 11

a root trunk (CEJ to furcation)

Question 12

Which tooth has smallest faciolingual crown dimension

Answer 12

Primary mandibular central incisor

Question 13

Most bilaterally symmetrical tooth

Answer 13

both the primary and permanent mand central incisor

Question 14

What results from delayed resorption of primary incisors

Answer 14

lingual eruption of permanent incisors

shark teeth

Question 15

Cervical third of primary central incisors exhibit what

Answer 15

prominent cervical ridges facially and lingually

max central?

Question 16

From a facial view, which slope on primary canine is longer

Answer 16

mesio-incisal slope is longer than the disto-incisal

Question 17

Cusp tip of primary canine off set to which direction

Answer 17

distal

Question 18

The maxillary 1st primary molar crown resembles what tooth

Answer 18

a permanent premolar

Question 19

The maxillary 1st primary molar has roots that resemble which tooth

Answer 19

Permanent maxillary molar

Question 20

Cervical ridge of max 1st primary molar most prominent where

Answer 20

Mesio-facial suface

Question 21

Primary maxillary 2nd molar resembles which tooth

Answer 21

Permanent maxillary first molar

Question 22

Primary maxillary 2nd molar is the only posterior primary tooth to have

Answer 22

Oblique ridge and
Transverse ridges and
Disto-lingual grooves

Question 23

Cusp of carabelli in primary dentition found where

Answer 23

Primary maxillary 2nd molar

Question 24

Last tooth to erupt in primary teeth

Answer 24

Maxillary primary 2nd molar

Question 25

What primary tooth from maxilla has more cusps

Answer 25

2nd primary maxillary molar has more cusps than 1st maxillary molar

Question 26

Which primary tooth has the most prominent cervical ridge

Answer 26

Primary mandibular first molar

Question 27

Which portion of the tooth is the most prominent cervical ridge of primary teeth

Answer 27

Facial cervical ridge of primary mand. 1st molar

Question 28

Facial view of primary mandibular 1st molar, the CEJ is most apical where

Answer 28

on mesial third | dips down apically here

Question 29

What's up with the fossa of primary mandibular 1st molar

Answer 29

Exhibits distal triangular fossa - central fossa displaced to distal some call it distal or main fossa rather than central

Question 30

Which tooth has most distinct transverse ridge

Answer 30

primary mandibular 1st molar

Question 31

Which tooth does not look like any permanent tooth

Answer 31

primary 1st mandibular molar

Question 32

Highest and sharpest cusp on primary mandibular first molar

Answer 32

Mesiolingual | not mesiobuccal

Question 33

Teeth whose function is primarily for biting

Answer 33

Max central incisors

Question 34

Tooth with greatest facio-lingual axial inclination

Answer 34

Max central incisors

Question 35

Which tooth has the greatest cervical curvature of any other tooth

Answer 35

Max central incisor

Question 36

The CEJ dips deeper on

Answer 36

Anterior teeth than posterior teeth Max than Mand Mesial side than distal Greatest on mesial of Max central incisor

Question 37

The only anterior teeth that are wider mesio-distally than facio-lingually

Answer 37

Max central incisors

Question 38

Max central incisor has which dimension that is longer than any anterior tooth

Answer 38

Mesio-distal

Question 39

Compare measurements of Inciso-cervical vs Mesio-distal dimensions of max central incisor

Answer 39

Nearly identical

Question 40

Contact between max central and lateral incisors makes which embrasure larger

Answer 40

makes lingual embrasure larger than facial | typical of most teeth

Question 41

Which incisal embrasure is larger | between max centrals or between central and lateral

Answer 41

central and lateral

Question 42

which tooth has most crown shape variations

Answer 42

Max lateral

Question 43

Which tooth exhibits most deviation in crown morphology

Answer 43

third molars

Question 44

Except for third molars, which tooth exhibits the most deviation in crown morphology

Answer 44

Max lateral

Question 45

Nature of Max lateral relation and contact with adjacent teeth

Answer 45

Most often in abnormal relation and contact with adjacent teeth

Question 46

Most congenitally missing tooth

Answer 46

3rd molars

Question 47

Other than 3rd molars, which tooth is most congenitally missing

Answer 47

Max lateral incisor

Question 48

The non-molar tooth that most frequently has a mesial and distal pulp horn

Answer 48

Max central incisor

Question 49

Non-molar tooth that is least likely to have a bifurcated root is

Answer 49

maxillary central incisor

Question 50

The anterior tooth that most likely would demonstrate lingual pit caries

Answer 50

Max Lateral

Question 51

What anatomical feature of Max lateral incisor complicates root planning

Answer 51

disto-lingual groove

Question 52

Of all max anterior teeth, which incisal angle has the greatest convexity

Answer 52

max lateral disto-incisal angle

Question 53

Where are the most prominent marginal ridges of all anterior teeth found

Answer 53

Max lateral

Question 54

Which teeth have the most distinct and deepest lingual fossas of all anterior teeth

Answer 54

Max lateral

Question 55

Which tooth has smallest mesio-distal crown width of any maxillary tooth

Answer 55

Max lateral

Question 56

Which tooth has nearly identical dimensions mesio-distally and facio-lingually

Answer 56

Max lateral incisor | don't confuse with max central that has identical inciso-cervical and mesio-distal dimensions

Question 57

Furthest cervical contact of any incisor found where

Answer 57

Distal contact of max lateral incisor

Question 58

Nature of distal contact of max lateral incisor

Answer 58

- furthest cervical contact of any incisor | - centered both inciso-cervically and facio-lingually

Question 59

Compare root lengths of max central and laterals

Answer 59

Max lateral roots are equal to or longer than central root lengths

Question 60

Which side of mand central incisors is the cervical curvature greater

Answer 60

greater on mesial than on distal

Question 61

Anatomical feature of mand centrals and laterals root surfaces

Answer 61

mesial and distal concave areas

Question 62

Smallest crown dimensions of any tooth

Answer 62

mand centrals

Question 63

Most symmetrical crown

Answer 63

Mand. Central

Question 64

Sharpest set of incisal angles (mesial and distal)

Answer 64

mand central

Question 65

mnemonic for contacts of max anterior teeth, starting at central

Answer 65

IJ JM JM I Just Jacked Michael Jackson's Moped I - incisal J - junction of incisal and middle M - middle

Question 66

Nature of proximal contacts of mand centrals

Answer 66

- they are at the same level - same level on mesial and distal - same incisocervical level

Question 67

What are the only maxillary teeth that occlude with only one opposing tooth only mandibular teeth that occlude with only one tooth

Answer 67

Max third molars Mand central incisors

Question 68

First succedaneous tooth to erupt

Answer 68

permanent mandibular central incisor | remember - Permanent firs molar is not succedaneous

Question 69

Size relation of buccal and lingual embrasures of mand central incisors

Answer 69

may bet the same

Question 70

The crown of the mand lateral special feature

Answer 70

tilts distally in relation to long axis

Question 71

On which tooth can you see the distal marginal ridge from a mesial view

Answer 71

mand lateral | because of the distal tilt of its crown in relation to the long axis

Question 72

Compare mesio-distal widths of mandbular centrals and laterals

Answer 72

laterals are wider

Question 73

Greatest cervical prominence of any anterior tooth

Answer 73

Max canine

Question 74

The tooth that is positioned most nearly to the vertical axis when viewed from a proximal view

Answer 74

Max canine

Question 75

Which tooth has overall greatest tooth length

Answer 75

``` Max canine (not longest crown) ```

Question 76

Which tooth has longest root

Answer 76

``` Max canine (not longest crown) ```

Question 77

Greatest facio-lingual dimension of any anterior tooth

Answer 77

Max canine

Question 78

Nature of distal contact of max canine

Answer 78

It is centered

Question 79

In intercuspal position, which tooth has the potential to contact both anterior and posterior teeth

Answer 79

Max canine | Occludes with mand canine and mand premolar

Question 80

Max canine cusp tip located where

Answer 80

Located facial to long axis | -centered or slightly facial, so lingual aspect is more visible from incisal view

Question 81

Which lobe of max canine includes the cusp tip

Answer 81

middle facial lobe

Question 82

Why are the mesial and distal of max canine asymmetric

Answer 82

because of the distal bulge of max canine

Question 83

Outline shape of max canine from facial view

Answer 83

pentagonal

Question 84

Tooth with straightest mesial alignment of crown to root

Answer 84

Mand canine

Question 85

What tooth has a mesial surface of the crown that is almost parallel to the long axis

Answer 85

Mand canine

Question 86

Tooth with longest crown dimension

Answer 86

Mand canine

Question 87

Which canine has less prominent cingulum | max or mand

Answer 87

mand

Question 88

how does the mesio-distal measurements compare between max and mand canine

Answer 88

mand canine is narrower | think distal bulge on max and flat mesial on mand

Question 89

Anterior tooth most likely to exhibit a bifurcated root

Answer 89

Mand canine

Question 90

Bifurcation of mand canine roots results in what roots

Answer 90

a facial root and lingual root

Question 91

Tooth with longest root of all mandibular teeth

Answer 91

Mand canine longest root of any tooth is max canine

Question 92

Shape of cross section of root of mand canine

Answer 92

irregularly oval or ovoid

Question 93

In the cross section of a mandibular canine root at the CEJ, what is the shape and where is it wider

Answer 93

Ovoid shape | wider mesio-distally at the labial end

Question 94

In cervical cross section (lower down on root) the root of the mand canine is what shape

Answer 94

flattened in a mesio-distal direction

Question 95

Compare max and mand canine proximal contact areas

Answer 95

mandibular canine contacts are more incisal than max | -think of mand incisors, all even, all high

Question 96

The convexity of mandibular canine

Answer 96

continuous convex facial surface from incisal to apical end continuous C shape from crown tip to root apex

Question 97

Mandibular canine incisal edge is what direction from long axis

Answer 97

lingual see more of the facial aspect when viewing from occlusal opposite from max canine