Maxillary premolars Chapter 9 Flashcards
Which premolar has a sharper buccal cusp?
1st premolar.
Which slope of the buccal cusp is longer on the maxillary first premolar? Which is longer on the lingual cusp?
Mesial on the buccal and distal in the lingual.
For the maxillary first premolar, what is the difference in the mesial and distal curvature when viewed from the buccal view?
Mesial curvature is more concave with the distal straight or slightly convex.
What is the mesial developmental depression?
Area just cervical the the contact that is a depression only seen in the first premolars. Ends at the bifurcation.
What is the mesial marginal developmental groove?
Groove in the enamel in the mesial marginal ridge extending down to the mesial developmental depression.
What is the differences seen in the cervical line for the distal and mesial aspects of a maxillary first premolar?
The distal line of the cervix has less curvature as compared to the mesial.
What shape is the occlusal view of a maxillary first premolar?
Hexagonal
Which tooth has more variations, the first or second maxillary premolar?
Second maxillary premolar.
What is the first evidence of calcification in the Max. second premolar?
2-2 1/2 years
When will the Max. second premolar erupt?
10-12 years.
When is the enamel completed in the Max. second premolar?
6-7 years.
When is root completion for the Max. second premolar?
12-14 years.
In the Max. second premolar, which buccal slope is shorter, mesial or distal?
Mesial. (opposite first)
Which maxillary premolar has a greater occlusal surface, first or second?
Second.
Which root depression is deeper on the Max second premolar, distal or mesial?
Distal.
