maxillary 2nd molars Flashcards
What is the function of the maxillary 2nd molar?
It supplements the 1st molar in function.
How do the maxillary 2nd molars compare to the 1st molars in size and shape?
They are similar in size and shape
What feature do maxillary 2nd molars have more of compared to the 1st molars?
supplemental grooves.
At what age do the maxillary 2nd molars typically erupt?
11-13 years of age.
What are the tooth numbers for the maxillary 2nd molars?
Teeth #2 and #15.
How does the crown of the maxillary 2nd molar compare to the 1st molar in terms of occlusal height?
The crown is shorter than the maxillary 1st molar occlusally.
How is the crown of the maxillary 2nd molar wider mesio-distal or buccal-lingual?
The crown is wider buccal-lingual
How does the distobuccal cusp appear on the maxillary 2nd molar?
The distobuccal cusp is smaller on the maxillary 2nd molar.
How are the buccal roots of the maxillary 2nd molar positioned?
The buccal roots are the same length and are closer together.
How does the distobuccal root of the maxillary 2nd molar appear?
The distobuccal root is straighter with no mesial curvature.
Is there evidence of a Cusp of Carabelli on the maxillary 2nd molar?
No
How does the distolingual (DL) cusp appear on the maxillary 2nd molar?
The DL cusp is getting smaller.
How are the roots positioned in the lingual view of the maxillary 2nd molar?
The roots are closer together.
From the lingual view what happens when a line is drawn through the DL cusp of the maxillary 2nd molar?
will bisect the apex of the lingual root.
How does the crown of the maxillary 2nd molar compare to the 1st molar in the mesial view?
The crown is shorter than the first molar.
How are the roots positioned in the mesial view in the maxillary 2nd molar?
The roots are closer together.
Which root is larger in the mesial view on the maxillary 2nd molar?
The MB root is larger than the DB root.
How many roots are visible from the distal view of the maxillary 2nd molar?
All 3
How do the roots of the maxillary 2nd molar appear from all angles?
The roots are within the confines of the tooth from all angles.
Where is the facial height of contour (H of C) on the maxillary 2nd molar?
gingival 1/3.
Where is the lingual height of contour (H of C) on the maxillary 2nd molar?
middle 1/3.
How does the occlusal outline of the maxillary 2nd molar appear?
either more or less rohombodial and more heart-shaped, due to the decrease in size of the DL cusp.
If the DL cusp is absent it was have what shape?
A heart shape
If the DL cusp is present it was have what shape?
romboidal
The MB and DL line angles of the maxillary 2nd molar are more?
Acute
The ML and DB line angles of the maxillary 2nd molar are more?
Obtuse