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Flashcards in Dental Anatomy I Deck (49):
1

Where does the lettering of Primary Dentition begin?

Right Maxillary 2nd Molar

2

How many primary teeth?

20

A through T

3

What are the 5 teeth in each quadrant in primary dentition?

Central incisor
Lateral incisor
Canine (cuspid)
First molar
Second molar

4

What 2 teeth have no proximal surface?

Central incisors

Distal surface 3rd Molar

5

What are the 4 axial surfaces of Posterior Teeth?

Mesial
Distal
Facial
Lingual

6

What 2 structures fuse to make up the Oblique Ridge?

Triangular ridge of distofacial cusp
Distal cusp ridge of the mesiolingual cusp

7

Why aren't Oblique Ridges pure transverse ridges?

Both aren't triangular

8

Where are Cervical Ridges found?

Greatest convexity
Facial and Lingual surfaces
Cervical

9

T/F
A sulcus and groove are the same

False

*sulcus is space above a groove

10

Where is a Sulcus found?

Between two ridges/cusps

11

T/F
The incisal ridge is not considered a surface

True

12

T/F
The mesioincisal line angle combines planes of two surfaces

False

Incisar ridge isn't a surface, so 2 line angles come together

13

Name 3 line angles of the anterior teeth

Mesioincisal
Mesiofacial
Distofacial

14

T/F
Emergence and Eruption are the same

False

*emergence technically tooth 1st appearance through gingiva

15

When the apical foramen closes completely and calcification of a tooth is complete:

Root completion

16

What is the term for tooth loss?

Exfoliation

17

What is the 1st and last Primary Crown to be completed?

Months?

Maxillary Central Incisor
(1.5 months)

Maxillary 2nd Molar
(11 months)

18

T/F
All primary tooth crowns are completed by 1 year of age

True

19

What 2 teeth have completely formed crowns at birth?

Primary mandibular 1st molar
Primary mandibular Central Incisor

20

What teeth have begun calcification at birth?

Permanent Mandibular 1st Molars

21

At what age does anterior tooth spacing stop expanding?

6 years

22

What teeth erupt at 6 years?

Permanent 1st Molars

23

What 3 Permanent crowns have completely calcified at 6?

Incisors
1st Premolars
1st Molars

24

What contains the developing tooth?

Dental Follicle

*sac-like structure

25

Where is the follicle position in the development of permanent anterior teeth?

Lingual to Primary roots

26

Where is the developing tooth follicle of permanent premolars located?

within Bifurcation/Trifurcation of primary molar roots

27

Where are developing follicles located in relation to the primary Molar teeth?

Distal or Posterior

28

What permanent teeth initiate calcification from birth to 1 year?

First molar
Central incisor
Canine
Lateral incisor

29

What permanent teeth initiate calcification from 2 to 4 year of age?

Premolars
Second Molars

30

When have the 3rd molars begun calcification?

9 years

31

What is a single cone structure called?

Haplodont

32

What are 3 straight line cusps called?

Triconodont

33

What are 3 cusps in a primary triangle?

Tritubercular Molar

34

What are 4 cusps in a rectangular or rhomboid form?

Quadritubercular Molar

35

What 3 cusps make up the Trigon Primary Cusp Triangle?
What cusp is left out?

Mesiofacial
Distofacial
Mesiolingual

Distolingual left out

36

What 2 teeth have only one antagonist in the opposing arch?

Maxillary 3rd molars
Mandibular central incisors

37

What is the acronym to remember Proximal Contact Areas of the Maxillary Anterior Teeth?

IJJMJM

38

Match the Proximal Contacts:
Midline:
Distal of Central:
Mesial of Lateral:
Distal of Lateral:
Mesial of Canine:
Distal of Canine

Incisal third
Junction of incisal/middle thirds
Junction of incisal/middle thirds
Middle third
Junction of incisal/middle thirds
Middle third

39

Contour and location of Maxillary anterior teeth for
Facial surface:
Lingual surface

Facial: 0.5 mm Cervical 3rd

Lingual: 0.5 mm Cervical 3rd

40

Contour and location of Maxillary posterior teeth for
Facial surface:
Lingual surface:

Facial: 0.5 mm Cervical 3rd

Lingual: 0.5 mm MIDDLE 3rd

41

How does the periodontal ligament attach the tooth to the alveolar bone?

Inserts into Cementum and bone

42

T/F
The periodontal ligament is functionally expressed as strategically placed fibers

True

43

Where is the smallest Embrasure in the maxilla?
(anterior teeth)

midline incisors

44

Where is the largest Embrasure in the maxilla?
(anterior teeth)

Between canine and premolar

45

T/F
Mesial portions of crowns are generally more developed than distal

True

46

T/F
Mesial cusps are smaller than distal cusps

False

47

T/F
Mesial marginal ridges are usually taller than distal marginal ridges

True

*1st premolar exception

48

T/F
Molars taper mesiodistally

True

49

What 2 teeth don't taper faciolingually?

Maxillary 1st molar

Mandibular 2nd premolar
(Y-grooved)

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