Molars Flashcards
name the tooth that has a greatly reduced / absent disto-lingual cusp?
27
35
46
16
37
27 (upper 2nd molar)
how many roots do maxillary molars have?
2 or 3
3 roots
how many roots do mandibular molars have?
2 or 3?
2 roots
what does surface does the convex cusp of the lower 2nd molar (lower 7) indicate?
buccal-mesial
where is the cusp of carabelli located
upper 1st molar on the mesio-palatal cusp
what surfaces are the 3 roots found in the 1st upper molar
2 buccal and 1 palatal
what shape are the upper 2nd molars compared to the 1st’s?
the 2nd’s are more triangular shape.
they are smaller on the disto-palatal surface
what is a common feature of the palatal root in the upper 2nd molars
often palatal root is fused with either of the buccal roots
which crown is the smallest of the 3 upper molars?
the third molar (wisdom tooth)
what is common for the roots the upper 3rd molar?
they fused together to form one common bulky root
how many cusps do the lower 1st molar have (and which surfaces)
5 cusps - 3 buccal and 2 lingual
which cusp is the smallest on the lower first molar
distal cusp
what is a key feature to look for when looking at the 2 roots of the lower 1st molar to determine which side is distal or mesial?
when looking at the mesial side you cannot see the roots of the distal.
the mesial root is broader than the distal
what is common on the buccal surface that increases the risk of caries on the lower 1st molar?
usually has a pit
what is a key feature to look for when looking at the 2 roots of the lower 2nd molar to determine which side is distal or mesial?
the mesial root is broader than the distal
