Dentition

Question 1

Where are the teeth found?

Answer 1

Within the alveoli of the maxillae and mandible

Question 2

What are the functions of the teeth

Answer 2

mastication and an articulatory surface for some speech sounds

Question 3

How many teeth are there?

Answer 3

32

Question 4

What are the four types of teeth?

Answer 4

incisors, cuspids (canines), bicuspids (pre-molars), and molars

Question 5

Each tooth has a _____, which hides beneath the gum line or ______.

Answer 5

root; gingiva

Question 6

What is infection of the gums known as?

Answer 6

gingivitis

Question 7

What is the visible one-third of the tooth called?

Answer 7

the crown

Question 8

The juncture (meeting) of the root and crown is the ____.

Answer 8

neck

Question 9

What is the crown’s surface made of?

Answer 9

dental enamel

Question 10

What does the dental enamel lie on top of?

Answer 10

the dentin or ivory of the tooth

Question 11

What is the pulp of a tooth?

Answer 11

the heart of a tooth and where the nerve resides

Question 12

What holds the tooth in the socket?

Answer 12

cementum - a thin layer of bone

Question 13

What are the five tooth surfaces?

Answer 13

medial, distal, buccal, lingual, and occlusal

Question 14

What is the medial surface?

Answer 14

surface towards the midline

Question 15

What is the distal surface?

Answer 15

surface away from the midline

Question 16

What is the buccal surface?

Answer 16

cheek side

Question 17

What is the lingual surface?

Answer 17

tongue side

Question 18

What is the occlusal surface?

Answer 18

contact surface between upper and lower teeth

Question 19

What are the incisors used for?

Answer 19

cutting

Question 20

What are the cuspid (canine)

Answer 20

a type of tooth that has a single cusp or point for tearing

Question 21

What are the bicuspids (premolars)

Answer 21

a type of tooth that has 2 cusps or points for tearing

Question 22

What are the molars?

Answer 22

a type of tooth that is large, has great occlusion surface (can make lots of contact), and is made for grinding;

Question 23

What is the largest molar?

Answer 23

1st molar

Question 24

What molar is the wisdom teeth?

Answer 24

3rd molar

Question 25

What is dentition?

Answer 25

the condition and arrangment of teeth

Question 26

When do baby (primary) teeth typically appear?

Answer 26

6-33 months

Question 27

When do permanent teeth typically appear?

Answer 27

6-21 years

Question 28

When do the central incisors develop in a newborn child's upper teeth?

Answer 28

8-13 months

Question 29

When do the central incisors develop in a newborn child's lower teeth?

Answer 29

6-10 months

Question 30

When do the cuspids develop in a newborn child's upper and lower teeth?

Answer 30

16-23 months old

Question 31

When do the first molars develop in a newborn child's upper and lower teeth?

Answer 31

13-19 months

Question 32

When do the second molars develop in a newborn child's upper and lower teeth?

Answer 32

23-33 months

Question 33

For permanent teeth, when do the central incisors develop?

Answer 33

6-8 years old

Question 34

For permanent teeth, when do the lateral incisors develop?

Answer 34

7-9 years

Question 35

For permanent teeth, when do the cuspids (canines) develop?

Answer 35

9-12 years old

Question 36

For permanent teeth, when do the bicuspids (pre-molars) develop?

Answer 36

9-12 years old

Question 37

For permanent teeth, when do the second molars develop?

Answer 37

11-13 years old

Question 38

For permanent teeth, when do the third molars develop?

Answer 38

17-21 years old

Question 39

What is molar occlusion?

Answer 39

Bringing the upper and lower teeth together; for mastication to occur, it must happen properly

Question 40

What is considered a normal Class I molar relationship?

Answer 40

When the mandibular first molar occludes a bit anteriorly with the maxillary first molar

Question 41

What is a normal Class I molar relationship also known as?

Answer 41

neutroclusion

Question 42

What is a Class I maloclusion?

Answer 42

when the incisors are oriented abnormally but the bite is normal (i.e. the mandibular first molar occludes the maxillary first molar)

Question 43

What is Class II maloclusion?

Answer 43

when the cusp of the mandibular first molar occludes posteriorly with the cusp of the maxillary first molar.

Question 44

What are the two divisions of class II maloclusion?

Answer 44

Division I: overjet and Division II: overbite

Question 45

In an overjet, there is ______, whereas in an overbite, there is __________.

Answer 45

horizontal protrusion; vertical overlap

Question 46

What is Class III maloclusion?

Answer 46

The cusp of the mandibular first molar occludes very anteriorly with the cusp of the maxillary first molar; involves underbite

Question 47

What is torsiversion?

Answer 47

rotated or twisted on its long axis

Question 48

What is labioverted?

Answer 48

tilted towards the lips

Question 49

What is linguoverted?

Answer 49

tilted toward the tongue

Question 50

What is distoverted?

Answer 50

tilted away from the midline

Question 51

What is mesioverted?

Answer 51

tilted toward the midline

Question 52

What is infraverted?

Answer 52

not erupted far enough to make occlusal contact

Question 53

What is supraverted?

Answer 53

erupted too far and disrupts occlusal contact in other places