Chapter 6 part 2 Flashcards
Visible; Projects above gums; 1/3 of tooth
Crown
embedded in alveolar process; 2/3 of tooth
Root
thin layer of bone holding tooth
Cementum
juncture of root and crown
Neck
ivory of tooth; bulk of tooth; contain nerves in pulp
Dentin
hardest substance in body
covers crown to root (not on root)
resists abrasion
thickest on grinding surface
Enamel
chisel shaped
have only one root
Central incisors
How many cusps does the first molar have?
4
How many cusps does the second molar have?
3-4
How many cusps does the third molar have?
3
Formation of tooth bud is at ___ weeks during development
5
Deposition of enamel and dentin is at ___ weeks during development
7
enamel and dentin hardened by calcium
Calcification
erupts through alveolar process
calcification still occurring
bony tissue between teeth ossify to form alveoli
Intraosseous eruption
see tooth migrate into oral cavity
clinical eruption
wear, pressure, strain wears away enamel
Attrition
How many central incisors do kids have total?
4
How many lateral incisors do kids have total?
4
How many canines do kids have total?
4
How many bicuspids do kids have total?
0
How many molars do kids have total?
8
What types of teeth are kids missing (half arch)?
2 bicuspids, 1 molar
How many central incisors do adults have total?
4
How many lateral incisors do adults have total?
4
How many canines do adults have total?
4
How many bicuspids do adults have total?
8
How many molars do adults have total?
12
How many teeth do adults have total?
32
How many teeth do kids have total?
20
