Chapter 2 Tooth

Question 1

tooth functions

Answer 1

protection, digestion, speech, and apperance

Question 2

2 main part of tooth

Answer 2

crown and root

Question 3

cementum

Answer 3

thin layer covers root

Question 4

dentin hardness like

Answer 4

a bone

Question 5

pulp chamber found in

Answer 5

the crown

Question 6

pulp canal

Answer 6

found in root

Question 7

what is the function of cementum

Answer 7

main part of the tooth that helps attach it to the bone

Question 8

alveolar bone surrounds

Answer 8

the tooth

Question 9

alveolar process

Answer 9

hugs the tooth

Question 10

pdl fibers

Answer 10

periodontal ligaments
connect tooth to the bone

Question 11

apex

Answer 11

end

Question 12

apical foramen

Answer 12

opening at the end of tooth in root
- nerves and blood supply pass through to the pulp

Question 13

sulcus

Answer 13

shallow groove which tooth and gums meet

Question 14

gingiva

Answer 14

gum

Question 15

cusp

Answer 15

tip of tooth elevation

Question 16

anatomical crown

Answer 16

part of crown covered by enamel

Question 17

clinical crown

Answer 17

crown visible in mouth

Question 18

enamel definition

Answer 18

-covers anatomical crown
-has some translucency
-hardest tissue of body
-has enamel rods/prisms

Question 19

dentin definition

Answer 19

-forms main portion of tooth
-hard, dense, elastic in nature
-yellow
-healing reaction by making secondary dentin
-had dentinal tubules

Question 20

pulp definition

Answer 20

-nourishing, sensory
-blood vessels, lymph vessels, connective tissues, nerve tissues
-pulp chamber: part of pulp that is crown
-pulp canal: part of pulp that is in root
-pulp horns: prolongation of the pulp toward cusp

Question 21

cementum definition

Answer 21

-covers root
-bonelike
-provides attachment of tooth to alveolar bone
-meets enamel at the cementoenamel junction (CEJ)

Question 22

cervical line

Answer 22

where crown and root meet

Question 23

crown is covered with

Answer 23

enamel

Question 24

root is covered with

Answer 24

cementum

Question 25

cementoenamel junction (CEJ) =

Answer 25

cervical line = crown and root join at

Question 26

apex

Answer 26

end of root

Question 27

apical foramen

Answer 27

hole at apex

Question 28

alveolar process

Answer 28

portion of jaw that supports the teeth

Question 29

alveolus

Answer 29

tooth socket

Question 30

furcation area

Answer 30

where the roots of multirooted teeth divide

Question 31

bifurcated root which teeth have it

Answer 31

- 2 roots - mandibular molars, maxillary 1st premolars

Question 32

trifurcated root which teeth have it

Answer 32

- 3 roots - only maxillary molars

Question 33

another name for adult teeth

Answer 33

permanent

Question 34

another name for baby teeth

Answer 34

primary or deciduous

Question 35

succedaneous teeth

Answer 35

adult teeth that replace baby teeth

Question 36

describe incisors and purpose

Answer 36

-lateral and central -one root -no cusps instead have incisal edge -cutting

Question 37

describe canine and purpose

Answer 37

-one root -one cusp -longest root -tearing

Question 38

describe premolar and purpose

Answer 38

-one root -two cusps -only maxillary 1st premolar has two roots -grind

Question 39

describe molar and purpose

Answer 39

-two to three roots -two roots on mandibular -three roots on maxillary -four cusps - maxillary 1st molar has 5 cusps

Question 40

surfaces of anterior teeth

Answer 40

distal, mesial, lingual, incisal, labial (facial) -4 surfaces, 1 ridge (edge)

Question 41

surfaces of posterior teeth

Answer 41

distal, mesial, lingual, occlusal, buccal -5 surfaces

Question 42

teeth can be divided into 1/3's on all sides

Answer 42

-mesial, middle, distal thirds -facial, middle, lingual thirds -incisal (occlusal), middle, and cervical thirds

Question 43

line angle

Answer 43

junction of two tooth surfaces

Question 44

point angles

Answer 44

junction of three tooth surfaces

Question 45

lobes

Answer 45

growth areas that form crown of tooth usually 4

Question 46

mamelons

Answer 46

rounded, bumpy ridges found on the cutting edge on newly erupted incisor teeth

Question 47

developmental groove

Answer 47

area between two lobes -lines of fusion for lobes

Question 48

cingulum

Answer 48

bulge found on cervical third of the interior teeth on the lingual side -lingual lobe of anterior teeth

Question 49

fissues

Answer 49

small lines or grooves that run on the lowest parts of the teeth

Question 50

pits

Answer 50

where fissures meet and the deepest part -usually where cavity or food gets stuck

Question 51

ridge

Answer 51

elevation on mesial or lingual side -elevated portion of tooth that runs in a line

Question 52

marginal ridges

Answer 52

rounded borders of enamel on mesial and distal shoulders

Question 53

contour

Answer 53

curved surfaces of the teeth

Question 54

fossa

Answer 54

depression of concavity