Maxillary 2nd Pre-Molar Arch Traits Flashcards
1
Q
At what age do they erupt?
A
10-12 years
2
Q
At what age is root completed?
A
12-14 years
3
Q
Buccal cusp size compared to 1st pre-molar
A
It is smaller than the 1st pre-molar
4
Q
Contacts from the buccal view
A
Mesial: Junction of middle and incisal 1/3
Distal: middle 1/3
5
Q
how many roots?
A
one
6
Q
Cusp heights
A
nearly equal
7
Q
What is opening up occlusal table?
A
having a greater distance between buccal and lingual cusp
8
Q
Crests of curvature from distal view
A
buccal-cervical 1/3
lingual-middle 1/3
9
Q
Central developmental grooves
A
much shorter than 1st pre-molar
10
Q
Where do variations mostly occur?
A
in the central groove which gives wrinkled experience
