Flashcards in Mandibular 2nd Pre-molar Arch Traits Deck (15):
at what age do they erupt?
at what age is the root completed?
what are the 2 forms and characteristics of them
1. Bicuspidate: has 2 cusps that are Buccal and Lingual
2. Tricuspidate: has 3 cusps that are Buccal, Mesial-Lingual, and Distal-Lingual
Heights of contour from buccal view
mesial: Junction of occlusal and middle 1/3
distal: middle 1/3
Which cusp is more developed from the lingual view?
the lingual cusp
Is there a developmental groove in the bicuspid?
order of size of the 3 cusps from tricuspid
number of roots?
how many cusps can be seen from the mesial view?
2 out of 3
From the mesial view why are you unable to see the DMR?
because there is a high MMR
From the distal view how many cusps can be seen?
all 3 because the DMR is relatively low
Height of Contour from distal view
buccal: cervical 1/3
Lingual: Middle 1/3
From the occlusal view, how are the proximal surfaces oriented?
What letter does the bicuspid groove create?
a H or U