CH:11 Overview of the Dentitions (Dental Arches, Teeth Functions, Surfaces and Anatomic Features)

Question 1

What are the two sets of teeth people have in their lifetime.

Answer 1

Primary and permanent

Question 2

How many teeth are in each dentition

Answer 2

20 in primary dentition

32 in permanent dentition

Question 3

What is the terms for the four sections of the divided dental arches

Answer 3

Quadrants

Question 4

What are the terms for the front teeth and the back teeth

Answer 4

Maxillary posterior
Maxillary anterior
Mandibular posterior
Mandibular anterior

Question 5

What are the names of the sextants

Answer 5

Maxillary right posterior sextant, maxillary anterior sextant maxillary left posterior sextant

Mandibular left posterior sextant, mandibular anterior sextant, mandibular right posterior sextant

Question 6

What are the four types of teeth

Answer 6

Incisors, canines (cuspids), premolars and molars

• there are no premolars in the primary dentition

Question 7

What is the function of incisors

Answer 7

To incise or cut (doesn’t require heavy force)

Question 8

What is the function of canines (cuspid)

Answer 8

Cutting or tearing (requires force)

Question 9

Which tooth is the longest and has the longest roots

Answer 9

Canines

Question 10

How many premolars are there

Answer 10

Four

Question 11

What is the function of a premolar

Answer 11

To hold it and grind

The pointed buccal holds
The lingual cusps grind

Question 12

Why don’t we use the term bicuspid anymore

Answer 12

Because the term by means that the premolar only has to cusps and some premolars have three cusps

Question 13

What is the function of molars

Answer 13

To chew in the grind

Question 14

How many cups do molars have

Answer 14

Four or more cusps on the occlusal surface

Question 15

Which tooth is referred as the “cornerstone” of the dental arch

Answer 15

Canines

Question 16

How many surfaces does a tooth have

Answer 16

Five

Question 17

What are the surfaces of a tooth

Answer 17

Facial, lingual, masticatory(occlusal), medial, and distal

Question 18

What are facial surfaces

Answer 18

The surface closest to the face

Question 19

What are labial surfaces

Answer 19

Surfaces closest to the lips

Question 20

What are buccal surfaces

Answer 20

surfaces closest to the inner cheek

Question 21

what are lingual surfaces

Answer 21

surfaces on the mandibular and maxillary teeth closest to the tongue

Question 22

what are palatal surfaces

Answer 22

surfaces closest to the palate

Question 23

what is the masticatory surface

Answer 23

the chewing surface

Question 24

what is the incisal surface (incisal edge)

Answer 24

the surface on anterior teeth

Question 25

what is the occlusal surface

Answer 25

the surface on posterior teeth

Question 26

what is the mesial surface

Answer 26

the surface on the tooth towards the midline

Question 27

what is the distal surface

Answer 27

the surface on the tooth distant from the midline

Question 28

what are proximal surfaces

Answer 28

when teeth are adjacent(next) to each other in an arch

Question 29

what are interproximal surfaces

Answer 29

the area between adjacent tooth surfaces

Question 30

Why are there curvatures on a tooth

Answer 30

to protect the gingiva from damage from the impact of foods during mastification, and stimulation for health

Question 31

what does concave mean

Answer 31

curved inward

Question 32

what does convex mean

Answer 32

curved outward

Question 33

what are contact areas (contact points)

Answer 33

the area of a mesial or distal surface of a tooth that touches the adjacent area of a tooth in the same arch

Question 34

what is the purpose of contact points

Answer 34

to prevent food from being trapped between teeth, stabilize the dental arches by holding the teeth in either arch, protects the interproximal gingival tissue from trauma during mastification

Question 35

what is the bulge

Answer 35

the height of the contour

Question 36

what is a contour

Answer 36

the curved surface of a tooth

Question 37

what is an embrasure

Answer 37

the triangular space near the gingiva between proximal surfaces of two adjoining teeth

Question 38

why must temporary crowns, bridges and restorations have proper contour, contacts, and embrasures

Answer 38

to ensure the health of oral tissue and for the comport of the patient and so the DA must understand the anatomical features of teeth to fabricate and place these temporary restorations

Question 39

what are the five surfaces of the the teeth

Answer 39

facial/buccul, lingual/palatal, distal, mesial, masticatory(occlusial surface, incisal surface)

Question 40

What is an interproximal space?

Answer 40

Area between adjacent tooth surfaces

Question 41

What are proximal surfaces?

Answer 41

The surfaces next to each other when teeth are adjacent to in an arch.

Question 42

What is the name of the triangular space towards the gingiva between adjacent teeth

Answer 42

An embrasure