Permanent Mandibular Premolars Flashcards
What is the shape of all mandibular premolars from the buccal view?
pentagon
Which mandibular premolar has a shorter wider crown?
second
Which cusp ridge on the buccal surface of all mandibular premolars is shorter?
mesial
Which mandibular premolar has less crown taper from contact to cervix
second
Which mandibular premolar has a more pointed cusp?
first
Which mandibular premolar has a more prominent buccal ridge?
first
Which mandibular premolar has a longer root with a blunt apex?
second
Which mandibular premolar more commonly has a mesial cusp ridge depression?
first
Which mandibular premolar more commonly has a distal cusp ridge depression?
second
Which mandibular premolar is more likely to have two lingual cusps?
second
Which mandibular premolar has a much narrower crown on the lingual surface?
first
Which mandibular premolar has a very short, nonfunctional lingual cusp?
first
Which mandibular premolar has a lingual groove evident between two lingual cusps?
second
Which mandibular premolar has a mesiolingual groove evident?
first
Which mandibular premolar has a mesial marginal ridge that is lower than the distal marginal ridge?
first
Which mandibular premolar has a distal marginal ridge lower than the mesial marginal ridge?
second
Which mandibular premolar has a higher and more horizontal mesial marginal ridge on the proximal surface?
second
Which mandibular premolar has a severe lingual crown tilt?
first
Which mandibular premolar has a lingual cusp that is much shorter than the buccal cusp?
first
Can you see a lot of the occlusal surface from the mesial surface on second premolars?
no
On mandibular premolars, where can you best see the mesiolingual groove from?
mesial surface
On mandibular premolars, where can you best see the two lingual cusps from?
distal surface
Which mandibular premolar has a better view of the occlusal surface from the distal?
second
What is the shape of first premolars from the occlusal?
diamond
What is the shape of second premolars from the occlusal?
square or round
Which mandibular premolar has a smaller occlusal table?
first
Which mandibular premolar has a wider lingual outline?
second
How many fossae are on first premolars?
2
How many fossae are on second premolars?
2 or 3
Is the distal or mesial fossa larger on all premolars?
distal
what is the pattern type of three-cusp second premolars?
Y shape
What is the pattern type of two-cusp second premolars?
H or U shape
If there are two lingual cusps on second premolars, is the lingual or buccal half larger?
lingual
If there are three lingual cusps on second premolars, is the mesiolingual or distolingual larger?
mesiolingual
Which mandibular premolar has a crown that is convex on the distal but mesiolingual portion is flat?
first
When do mandibular first premolars erupt?
10-12 years
When do mandibular second premolars erupt?
11-12 years
What is the root length of mandibular second premolars?
14.7 mm
What is the root length of mandibular first premolars?
14.4 mm
When is the crown completed of mandibular first premolars?
5-6 years
When is the crown completed of mandibular second premolars?
6-7 years
When is the root completed of mandibular first premolars?
12-13 years
