Chapter 8

Question 1

when does the face and oral cavity develop?

Answer 1

Embryonic period or 4th week

Question 2

what are the 3 periods of prenatal development?

Answer 2

preimplantation - sperm finds egg
embryonic - major structures of the body form
fetal - maturation and growth

Question 3

what are the two developmental disturbances?

Answer 3

environmental

genetic

Question 4

embryology

Answer 4

the study of prenatal development before birth

Question 5

histology

Answer 5

the study of the structures and functions of the tissues on a microscopic level

Question 6

what is prenatal development

Answer 6

start of pregnancy and continues on until birth

Question 7

exfoliation

Answer 7

shedding of the teeth

Question 8

root of the tooth

Answer 8

the end of the root is called the apex
may have 1,2, or 3 roots
2 roots - biburfication
3 roots - triburfication

Question 9

pulp

Answer 9

the living part of the tooth

contains nerves and blood vessels

Question 10

what are the primary embryonic layers

Answer 10

ectoderm
mesoderm
endoderm
during 3rd week

Question 11

branchial arches

6 of them

Answer 11

1st - forms lower lip
2nd - forms styloid process
4-6 - form the body of the hyoid

Question 12

odontogenesis

Answer 12

growth
calcification
eruption

Question 13

three stages of tooth growth period

Answer 13

bud
cap
bell

Question 14

calcification

Answer 14

tooth hardened by the deposit of calcium

Question 15

deposition

Answer 15

adding of bone

Question 16

resorption

Answer 16

loss of bone

Question 17

what is the eruption of primary teeth

Answer 17

movement of tooth into functional position

Question 18

eruption of permanent teeth

Answer 18

functional position

Question 19

what is the pulp made up of

Answer 19

blood vessels and nerves

Question 20

hardest substance in the body

Answer 20

enamel

Question 21

largest mineral component in enamel

Answer 21

calcium

Question 22

primary function of the periodontium

Answer 22

support
maintain
retain

Question 23

cementoclasts

Answer 23

cells that resorb cement

Question 24

osteoclasts

Answer 24

cells that resorb bone

Question 25

what are the 3 types of dentin

Answer 25

primary secondary tertiary

Question 26

periodontal ligament

Answer 26

connective tissues

Question 27

what are the three types of oral mucosa

Answer 27

lining mucosa - soft, inside of cheeks masticatory mucosa - rubbery, allows chewing specialized mucosa - sensation

Question 28

oral histology

Answer 28

structure and function of the teeth and oral tissues

Question 29

clinical crown

Answer 29

visible in the mouth

Question 30

anatomical crown

Answer 30

covered with enamel

Question 31

ameloblasts

Answer 31

forms enamel

Question 32

odontoblasts

Answer 32

forms dentin

Question 33

cementoblasts

Answer 33

forms cementum

Question 34

when do primary teeth form

Answer 34

5 to 6 weeks in the tummy

Question 35

when do permanent teeth form

Answer 35

17th week in the tummy