Premolars Flashcards
Which max tooth has the most pronounced developmental marginal groove of the maxillary?
Max 1st premolar
Which tooth has a mesial concavity making it difficult to adapt a matrix band?
Max 1st premolar
Which tooth has a cervical cross section that looks like a kidney bean?
Max 1st premolar
Which nonmolar tooth is most likely to have 2-3 roots?
Max 1st premolar
What side is the maxillary 1st premolar buccal cusp offset to?
distal
Which cusp ridge is longest on the maxillary 1st premolar?
Mesio-facial cusp ridge
Which premolar has the steepest cusp inclines?
Max 1st premolar
What side is the maxi 1st premolar lingual cusp offset to?
Mesial
Which posterior tooth has the greatest cervico occlusal crown height?
Max 1st premolar
How do the buccal and lingual cusps compare in height on the maxillary 2nd premolar?
same height
Which posterior tooth is the most symmetrical?
Max 2nd premolar
Which tooth has a really shot central groove with a lot of supplemental grooves making it look wrinkly?
Max 2nd premolar
Which premolar has a unique prominent triangular ridge with no central groove? and fossa on the side of the tri ridge that look like snake eyes?
Mand 1st premolar
Which side of tooth 21 does the developmental groove originate from?
Mesiolingual
What’s special about the mesiolingual groove of the mand 1st premolar?
It’s the only tooth that has it
What’s different about the mesial marginal ridge vs distal marginal ridge on the mand 1st premolar?
Mesial: it’s got a developmental groove that makes it run at 45 degrees.
Distal: no groove and more coronal than the mesial.
What the shape of the mand 1st premolar from occlusal?
diamond shaped
Where would a second canal be located for a mand 1st premolar? rarely happens
Lingual
Which premolar is the only premolar to only have one pulp horn?
Mand 1st premolar
How high is the lingual cusp of the mand 1st premolar compared to the facial cusp?
2/3 the height.
Which posterior tooth has most cusp height difference?
Mand 1st premolar
Which tooth has the narrowest attached gingiva?
Mand premolars
Which posterior tooth is the smallest facial lingually?
Mand 1st premolar
Which tooth has the closest dimensions faciolingually and mesiodistally?
Mand 1st premolar
The occlusal crown outline of the mand 2nd premolar is what shape?
What shape is the occlusal table?
Pentagon.
Rectangle.
Which premolar is most likely to have a crescent shaped central developmental groove?
Mand 2nd premolar
What different cusps are on a mandibular premolar Y type ??
One facial cusp
2 lingual cusps
Which tooth has the same number of occlusal pits as the Y type mandibular 2nd premolar?
How many pits?
Max 1st molar
3 pits
Which premolar is the only premolar with multiple lingual cusps?
Mand 2nd premolar
Which premolar is the only premolar with a lingual groove?
Mand 2nd premolar
Which premolar is the only premolar with a central fossa?
Mand 2nd premolar
Which premolar most frequently has a single central pit?
mand 2nd premolar
Which tooth is the most congenitally missing premolar?
Mand 2nd premolar
Which nonmolar tooth has the sharpest demarcation between pulp chamber and canal?
Max. 1st premolar
Which premolar is most likely to have bifurcated roots?
Max. 1st premolar
Which premolar has fossa that are closest in size to any other posterior tooth?
Max 2nd premolar
Which premolar has a separate mesial and distal pit that aren’t connected by a groove?
Mand 1st premolar
Where is the shortest interdental papilla located between?
Mand 2nd premolar and 1st Molar
Where do the maxillary lingual cusps of Premolars occlude in?
The distal fossa of the opposite Premolar (1st premolar to 1st premolar fossa)
