Premolars Flashcards
buccal and lingual cusps are nearly equal
max premolars
occlusal surface is wider BL than MD
max premolars
Which is the larger max premolar?
1st
two roots B and L
max PM1
describe max PM1 occlusal table
angular
mesial marginal dev groove and mesial crown concavity
max PM1
which cusp is slightly longer on the max PM1
buccal cusp
from the lingual view, the lingual cusp of the max PM1 offset to –
mesial
which premolar is symmetrical?
max PM2
who many roots does max PM2 have?
one
describe occlusal table of max PM2
round
buccal and lingual cusps are equal
max PM2
buccal and lingual cusps in line
max PM2
premolar roots deviate towards –
distal
marginal ridge is slightly higher on – for max premolars
mesial
fpr max premolars from M view, – occlusal table is visible
less
M marginal dev grooves crosses the –
marginal ridge
Large buccal cusp
mand premolars
Which mand premolar is larger?
2nd
describe crown dimension for mand premolars
BL = MD
lingual inclination of buccal surface for –
mand premolars
lingual inclination of buccal surface of mand premolars permits good – in ICP
interdigitation of opposing max and mand teeth
long sharp buccal cusp
mand PM1
transitional form
mand PM1
very small lingual cusp
mand PM1
ML dev groove
mand PM1
only premolar with three cusps
mand PM2
which premolar has the largest buccal cusp?
mand PM2
compare lingual cusp size for mand PM2
ML > DL
prominent B triangular ridge (snake eye)
mand PM1
could have central pit
mand PM2
prominent facial line angles
max PM1
mesial marginal ridge more occlusally than distal marginal ridge
max premolars
less prominent lingual cusp
mand PM1
mesial MR runs at 45 degree to long axis
mand PM1
distal MR runs perpendicular to long axis
mand PM1
from occlusal, tooth is pear shaped
mand PM1
both MR are perpendicular to long axis
mand PM2
has two lingual cusps (ML > DL)
mand PM2
buccal and lingual cusps are equal in height
mand PM2
