Quiz 3 (Teeth, hyoid, vert, ribs, sternum) Flashcards
Two types of teeth (ages)
Deciduous & permanent
Dental formula (adult & child teeth)
A: 2-1-2-3; C:2-1-2 (no premolars)
occlusal
chewing surface of teeth
apical
root tip
lingual
tongue side
buccal
cheek side
mesial
closest to middle of front teeth
distal
furthest from midsagittal plane
Molar
largest crowns, square (maxillary), rectangular (mandibular), 4-5 cusps; 3 roots maxillary (2 buccal), 2 roots mandibular (1 mesial, 1 distal)
siding maxillary molars
root tips incline distally
siding mandibular molars
one root mesial & other distal, booth root tips incline distally, slight groove on the lingual side
Premolars (bicuspid)
2 cusps (lingual & buccal), buccal cusp more prominent; roots flattened mesiodistally
maxillary premolar
single root (can separate into 2 at root tip), larger buccal cusp
mandibular premolar
single root (never separated), buccal-lingual ridge, cusps less distinct in P4
P3 v. P4
maxillary: bugger cusps P3
mandibular: smaller cusps P3
siding premolar
root inclination (distally), lingual cusp is more mesially positioned relative to buccal cusp
Canine
single “cusp”, single long/round root; root tips incline distally, highest point of crown displaced mesially
maxillary canine
broader crowns, more lingual bulges
mandibular canine
narrower crowns, less pronounced lingual bulge, look more like incisors
incisors
single root, blade/chisel tip
maxillary incisors
larger crown, rounder roots, lingual ridges more pronounced
mandibular incisors
tall/narrow crowns, mesiodistally flattened roots
I1 v I2 (maxillary)
1: short, round root, large crown w/horizontal margin
2: smaller crown, distal edge more rounded
siding incisors (maxillary)
mesial edge of crown & roots form straight line, roots incline distally