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24 Cards in this Set

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What are the functions of premolars?
Hold and grind food. Work with molars with mastication. With out molar can use premolar for chewing.
Lingual lobes forms cusp rather than cingulum. T/F
True
Which premolar does not develop from 4 lobes?
Mandibular 2nd premolar- develop from 5 lobes
What are found on the occulsal surfaces of premolars?
cusps, grooves, ridges, fossae
The occulsal surface of the premolar is bordered by?
marginal ridges
How many premolars are in the primary teeth?
There are no premolars in primary dentition because they replace deciduous molars.
There is an exception to the mandibular 1st eruption rule, which tooth is it?
Maxillary 2nd premolar erupt before mandibular 2nd premolars.
Permanent maxillary 1st premolars erupt? Root completion? Calcification?
Eruption 10-11yrs
Root complete 13years
calcification 1.5 years
Permanent maxillary 2nd premolars erupt? Root completion? Calcification?
Eruption 10-12yrs
Root complete 13 years
Calcification 2 years
Permanent mandibular 1st premolars erupt? Root completion? Calcification?
Eruption 10-12yrs
Root complete 13 years
Calcification 2 years
When do the permanent mandibular 2nd premolar erupt? Root completion? Calcification?
Eruption 11-12yrs
Root complete 14 years
Calcification 2.5 years
What is the proximal view(shape) for the maxillary premolars?
trapezoidal shape
Which of the premolars have a wider F-L than M-D dimensions?
Maxillary premolars
What is the proximal view (shape) for the mandibular premolars?
rhomboidal shape
Which of the premolars have a larger Facial cusp?
mandibular
What premolar usually has two roots?
1st mandibular
Out of the maxillary premolars which has a lingual cusp shorter and narrower than buccal cusp?
Maxillary 1st premolar
Which premolar has cusps of nearly equal in length and width?
Maxillary 2nd premolar
Which maxillary premolars have a mesial marginal groove and depression? And which has no groove and depression?
Maxillary 1st premolar is groovy. 2nd dosent
What root is longer on the maxillary 1st premolar?
Buccal is larger
Why do we need to have special considerations on scaling the max 1st premolar?
It has a mesial groove and concavity
What is the shape of the maxillary 1st premolar in occulsal aspect?
Hexagonal
What is the shape of the maxillary 2nd premolar in occulsal aspect?
Ovoid
Which maxillary premolars have a shorter central developmental groove?
Mandibular 2nd premolar