Dental Anatomy Facts Part 1 Flashcards Preview

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Flashcards in Dental Anatomy Facts Part 1 Deck (97):
1

Which are less mineralized and more worn
Primary or Permanent teeth

Primary

2

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

2-4 mm

3

Mamelons that remain beyond what age generally indicate what condition

beyond age 10 indicate an open bite

4

Calcification of primary roots is normally completed by what age

3-4 years of age

5

Usual pattern of eruption for primary teeth

additional notes
exception to rule

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

front to back except canine
Lowers before uppers except laterals

6

Primate space is where on maxillary primary dentition

between lateral and canine

7

Mandibular primary primate space

between canine and first molar

8

Spacing in primary anterior teeth is most frequently caused by

growth of dental arches

9

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

occlusal direction

outer (or opposite) direction for permanent enamel rods

10

A main difference in primary molar roots from permanent

more divergent roots

11

What small or lacking in primary molars

a root trunk (CEJ to furcation)

12

Which tooth has smallest faciolingual crown dimension

Primary mandibular central incisor

13

Most bilaterally symmetrical tooth

both the primary and permanent mand central incisor

14

What results from delayed resorption of primary incisors

lingual eruption of permanent incisors
(shark teeth)

15

Cervical third of primary central incisors exhibit what

prominent cervical ridges facially and lingually
max central?

16

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

mesio-incisal slope is longer than the disto-incisal

17

Cusp tip of primary canine off set to which direction

distal

18

The maxillary 1st primary molar crown resembles what tooth

a permanent premolar

19

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

Permanent maxillary molar

20

Cervical ridge of max 1st primary molar most prominent where

Mesio-facial suface

21

Primary maxillary 2nd molar resembles which tooth

Permanent maxillary first molar

22

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

Oblique ridge and
Transverse ridges and
Disto-lingual grooves

23

Cusp of carabelli in primary dentition found where

Primary maxillary 2nd molar

24

Last tooth to erupt in primary teeth

Maxillary primary 2nd molar

25

What primary tooth from maxilla has more cusps

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

26

Which primary tooth has the most prominent cervical ridge

Primary mandibular first molar

27

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

Facial cervical ridge of primary mand. 1st molar

28

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

on mesial third
dips down apically here

29

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

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

30

Which tooth has most distinct transverse ridge

primary mandibular 1st molar

31

Which tooth does not look like any permanent tooth

primary 1st mandibular molar

32

Highest and sharpest cusp on primary mandibular first molar

Mesiolingual
not mesiobuccal

33

Teeth whose function is primarily for biting

Max central incisors

34

Tooth with greatest facio-lingual axial inclination

Max central incisors

35

Which tooth has the greatest cervical curvature of any other tooth

Max central incisor

36

The CEJ dips deeper on

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

37

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

Max central incisors

38

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

Mesio-distal

39

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

Nearly identical

40

Contact between max central and lateral incisors makes which embrasure larger

makes lingual embrasure larger than facial
typical of most teeth

41

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

central and lateral

42

which tooth has most crown shape variations

Max lateral

43

Which tooth exhibits most deviation in crown morphology

third molars

44

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

Max lateral

45

Nature of Max lateral relation and contact with adjacent teeth

Most often in abnormal relation and contact with adjacent teeth

46

Most congenitally missing tooth

3rd molars

47

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

Max lateral incisor

48

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

Max central incisor

49

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

maxillary central incisor

50

The anterior tooth that most likely would demonstrate lingual pit caries

Max Lateral

51

What anatomical feature of Max lateral incisor complicates root planning

disto-lingual groove

52

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

max lateral disto-incisal angle

53

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

Max lateral

54

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

Max lateral

55

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

Max lateral

56

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

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

57

Furthest cervical contact of any incisor found where

Distal contact of max lateral incisor

58

Nature of distal contact of max lateral incisor

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

59

Compare root lengths of max central and laterals

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

60

Which side of mand central incisors is the cervical curvature greater

greater on mesial than on distal

61

Anatomical feature of mand centrals and laterals root surfaces

mesial and distal concave areas

62

Smallest crown dimensions of any tooth

mand centrals

63

Most symmetrical crown

Mand. Central

64

Sharpest set of incisal angles (mesial and distal)

mand central

65

mnemonic for contacts of max anterior teeth, starting at central

IJ JM JM
I Just Jacked Michael Jackson's Moped

I - incisal
J - junction of incisal and middle
M - middle

66

Nature of proximal contacts of mand centrals

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

67

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

only mandibular teeth that occlude with only one tooth

Max third molars

Mand central incisors

68

First succedaneous tooth to erupt

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

69

Size relation of buccal and lingual embrasures of mand central incisors

may bet the same

70

The crown of the mand lateral special feature

tilts distally in relation to long axis

71

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

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

72

Compare mesio-distal widths of mandbular centrals and laterals

laterals are wider

73

Greatest cervical prominence of any anterior tooth

Max canine

74

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

Max canine

75

Which tooth has overall greatest tooth length

Max canine
(not longest crown)

76

Which tooth has longest root

Max canine
(not longest crown)

77

Greatest facio-lingual dimension of any anterior tooth

Max canine

78

Nature of distal contact of max canine

It is centered

79

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

Max canine
Occludes with mand canine and mand premolar

80

Max canine cusp tip located where

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

81

Which lobe of max canine includes the cusp tip

middle facial lobe

82

Why are the mesial and distal of max canine asymmetric

because of the distal bulge of max canine

83

Outline shape of max canine from facial view

pentagonal

84

Tooth with straightest mesial alignment of crown to root

Mand canine

85

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

Mand canine

86

Tooth with longest crown dimension

Mand canine

87

Which canine has less prominent cingulum
max or mand

mand

88

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

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

89

Anterior tooth most likely to exhibit a bifurcated root

Mand canine

90

Bifurcation of mand canine roots results in what roots

a facial root and lingual root

91

Tooth with longest root of all mandibular teeth

Mand canine

longest root of any tooth is max canine

92

Shape of cross section of root of mand canine

irregularly oval or ovoid

93

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

Ovoid shape
wider mesio-distally at the labial end

94

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

flattened in a mesio-distal direction

95

Compare max and mand canine proximal contact areas

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

96

The convexity of mandibular canine

continuous convex facial surface from incisal to apical end

continuous C shape from crown tip to root apex

97

Mandibular canine incisal edge is what direction from long axis

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