Maxillary Premolars Study Set: Key Terms & Definitions
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61 Terms
4
how many lobes do maxillary premolars develop from?
holding and grinding
function of maxillary premolars:
maxillary 1st premolar
which maxillary premolar has a longer crown?
maxillary 2nd premolar
which maxillary premolar has a longer root?
mesio-distal
are maxillary premolars wider mesio-distally or facial lingually?
trapezoid
the shape of the maxillary premolars facially is:
trapezoid
the shape of the maxillary premolars proximally is:
2
how many cusps does the maxillary 1st premolar have?
1.5 - 1.75 years
calcification time for maxillary 1st premolar:
10-11 years
eruption time for maxillary 1st premolar:
maxillary 1st premolar
which tooth is the largest premolar in the mouth?
mesial
on the maxillary 1st premolar, which slope is longer? mesial or distal?
distal
on the maxillary 1st premolar, which slope is more curved? mesial or distal?
middle 1/3
what is the mesial height of contour for the maxillary 1st premolar?
middle 1/3
what is the mesial height of contour for the maxillary 2nd premolar?
middle 1/3
what is the distal height of contour for the maxillary 1st premolar?
middle 1/3
what is the distal height of contour for the maxillary 1st premolar?
distal
on the maxillary 1st premolar, which side's height of contour flares out the most ( most concave)?
occlusal
from a facial view, the maxillary 1st premolar is trapezoidal in shape with the longer side on the _____ side
cervical
from a proximal view, the maxillary 1st premolar is trapezoidal in shape with the longer side on the _____ side
cervical 1/3
what is the buccal height of contour for the maxillary 1st premolar?
cervical 1/3
what is the buccal height of contour for the maxillary 2nd premolar?
middle 1/3
what is the lingual height of contour for the maxillary 1st premolar?
middle 1/3
what is the lingual height of contour for the maxillary 2nd premolar?
maxillary 1st premolar
which premolar has a mesial marginal ridge developmental groove?
mesial
The maxillary 1st premolar bifurcates, Which side is the bifurcation more occlusal mesial or
distal?
mesial
on the maxillary 1st premolar, which side is the deep developmental depression?
maxillary 1st premolar
which premolar has a deep developmental depression?
lingual
the maxillary 1st premolar has 2 cusps, which cusp tip is more sharp? buccal or lingual?
facial
on the maxillary 1st premolar, which ridge is more prominent/defined , facial or lingual ridge?
mesial
on the maxillary 1st premolar, the lingual cusp sits more to which side?
distal
on the maxillary 1st premolar, the buccal cusp sits more to which side?
buccal
on the maxillary 1st premolar, which cusp is longer, buccal or lingual?
distal
on the maxillary 1st premolar, the root trunk is flat on which side, mesial or distal?
buccal
on the maxillary 1st premolar, which root is usually longer, lingual or buccal?
lingual
on the maxillary 1st premolar, which root is usually wider, lingual or buccal?
middle 1/3
on the maxillary 1st premolar, the bucco-lingual proximal contact for both mesial and distal are on the:
lingual
on the maxillary 1st premolar, the bucco-lingual proximal contact for the mesial side sits more to the:
buccal
on the maxillary 1st premolar, the bucco-lingual proximal contact for the distal side sits more to the:
hexagonal
from an occlusal view, the maxillary 1st premolar has a _______ shape
hexagonal
from an occlusal view, the maxillary 2nd premolar has a _______ shape
buccal
on the maxillary 1st premolar, which cusp is wider, lingual or buccal?
mesio-buccal
disto-buccal
on the occlusal surface, what developmental grooves does the maxillary 1st premolar have?
maxillary 1st premolar
what tooth's root canal has a "Kidney shaped" or
"Figure 8" shape?
kidney shaped/ figure 8
what is the shape of the maxillary 1st premolar's root canal?
fattened oval
what is the shape of the maxillary 2nd premolar's root canal?
maxillary 2nd premolar
what tooth's root canal is not well defined demarcation
between the pulp chamber and the root cavity?
proximal
in order to see the 2 bifurcated roots on the maxillary 1st premolar, you would need to be looking at the tooth from a _____ view
10-12 years
eruption time for maxillary 2nd premolar:
2-2.25 years
calcification time for maxillary 2nd premolar:
maxillary 2nd premolar
which maxillary premolar is more round and less angular?
maxillary 2nd premolar
which maxillary premolar has cusps that sit at the same height?
maxillary 2nd premolar
which maxillary premolar has a shorter crown?
maxillary 1st premolar
which maxillary premolar has a shorter root?
length of the root
The Maxillary 2nd Premolar is smaller
than the 1st in all aspects except for
the:
maxillary 2nd premolar
which maxillary premolar will have more variations in form?
distal
on the maxillary 2nd premolar, which slope is longer? mesial or distal?
maxillary 1st premolar
which maxillary premolar is more prone to bifurcate?
distal
on the maxillary 2nd premolar, the developmental root depression is deeper on the:
root trunk
for the maxillary premolars, the tips of the cusps are within the confines of the:
maxillary 2nd premolar
which premolar's occlusal surface has a "wrinkles" appearence?