Dental Anatomy I

Question 1

Where does the lettering of Primary Dentition begin?

Answer 1

Right Maxillary 2nd Molar

Question 2

How many primary teeth?

Answer 2

20

A through T

Question 3

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

Answer 3

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

Question 4

What 2 teeth have no proximal surface?

Answer 4

Central incisors

Distal surface 3rd Molar

Question 5

What are the 4 axial surfaces of Posterior Teeth?

Answer 5

Mesial
Distal
Facial
Lingual

Question 6

What 2 structures fuse to make up the Oblique Ridge?

Answer 6

Triangular ridge of distofacial cusp

Distal cusp ridge of the mesiolingual cusp

Question 7

Why aren’t Oblique Ridges pure transverse ridges?

Answer 7

Both aren’t triangular

Question 8

Where are Cervical Ridges found?

Answer 8

Greatest convexity
Facial and Lingual surfaces
Cervical

Question 9

T/F

A sulcus and groove are the same

Answer 9

False

*sulcus is space above a groove

Question 10

Where is a Sulcus found?

Answer 10

Between two ridges/cusps

Question 11

T/F

The incisal ridge is not considered a surface

Answer 11

True

Question 12

T/F

The mesioincisal line angle combines planes of two surfaces

Answer 12

False

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

Question 13

Name 3 line angles of the anterior teeth

Answer 13

Mesioincisal
Mesiofacial
Distofacial

Question 14

T/F

Emergence and Eruption are the same

Answer 14

False

*emergence technically tooth 1st appearance through gingiva

Question 15

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

Answer 15

Root completion

Question 16

What is the term for tooth loss?

Answer 16

Exfoliation

Question 17

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

Months?

Answer 17

Maxillary Central Incisor
(1.5 months)

Maxillary 2nd Molar
(11 months)

Question 18

T/F

All primary tooth crowns are completed by 1 year of age

Answer 18

True

Question 19

What 2 teeth have completely formed crowns at birth?

Answer 19

Primary mandibular 1st molar

Primary mandibular Central Incisor

Question 20

What teeth have begun calcification at birth?

Answer 20

Permanent Mandibular 1st Molars

Question 21

At what age does anterior tooth spacing stop expanding?

Answer 21

6 years

Question 22

What teeth erupt at 6 years?

Answer 22

Permanent 1st Molars

Question 23

What 3 Permanent crowns have completely calcified at 6?

Answer 23

Incisors
1st Premolars
1st Molars

Question 24

What contains the developing tooth?

Answer 24

Dental Follicle

*sac-like structure

Question 25

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

Answer 25

Lingual to Primary roots

Question 26

Where is the developing tooth follicle of permanent premolars located?

Answer 26

within Bifurcation/Trifurcation of primary molar roots

Question 27

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

Answer 27

Distal or Posterior

Question 28

What permanent teeth initiate calcification from birth to 1 year?

Answer 28

First molar Central incisor Canine Lateral incisor

Question 29

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

Answer 29

Premolars | Second Molars

Question 30

When have the 3rd molars begun calcification?

Answer 30

9 years

Question 31

What is a single cone structure called?

Answer 31

Haplodont

Question 32

What are 3 straight line cusps called?

Answer 32

Triconodont

Question 33

What are 3 cusps in a primary triangle?

Answer 33

Tritubercular Molar

Question 34

What are 4 cusps in a rectangular or rhomboid form?

Answer 34

Quadritubercular Molar

Question 35

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

Answer 35

Mesiofacial Distofacial Mesiolingual Distolingual left out

Question 36

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

Answer 36

Maxillary 3rd molars | Mandibular central incisors

Question 37

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

Answer 37

IJJMJM

Question 38

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

Answer 38

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

Question 39

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

Answer 39

Facial: 0.5 mm Cervical 3rd Lingual: 0.5 mm Cervical 3rd

Question 40

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

Answer 40

Facial: 0.5 mm Cervical 3rd Lingual: 0.5 mm MIDDLE 3rd

Question 41

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

Answer 41

Inserts into Cementum and bone

Question 42

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

Answer 42

True

Question 43

Where is the smallest Embrasure in the maxilla? | anterior teeth

Answer 43

midline incisors

Question 44

Where is the largest Embrasure in the maxilla? | anterior teeth

Answer 44

Between canine and premolar

Question 45

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

Answer 45

True

Question 46

T/F | Mesial cusps are smaller than distal cusps

Answer 46

False

Question 47

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

Answer 47

True *1st premolar exception

Question 48

T/F | Molars taper mesiodistally

Answer 48

True

Question 49

What 2 teeth don't taper faciolingually?

Answer 49

Maxillary 1st molar | Mandibular 2nd premolar Y-grooved