Maxillary 2nd and 3rd Molars Flashcards
Which is smaller the Maxillary 1st or 2nd molar
2nd
The apex of the palatal (lingual) root on the maxillary 2nd molar is pointed towards…
distal
Buccal HOC for maxillary 2nd molar
Cervical third
Cusp size for maxillary 2nd molar in order of largest to smallest
(same as maxillary 1st molar) ML-MB-DB-DL
Lingual HOC for maxillary 2nd molar
Middle third
Mesial contact for maxillary 2nd molar
middle third
Distal contact for maxillary 2nd molar
middle third
T/F: Similarly to the maxillary 1st molar, the maxillary 2nd molar also has a distal concavity
F
Which is greater (larger) for the maxillary 2nd molar: the MD(B) dimensions or MD(L) dimensions
MD (B)
What are the two different shapes of the maxillary 2nd molar occlusal table
Rhomboidal and Heart shaped
When will the occlusal table for the maxillary 2nd molar be heart shaped
when the DL cusp is very tiny or absent
Describe the grooves and pits for the maxillary 2nd molar
same as maxillary 1st molar
Which cusp is smaller on the maxillary 2nd molar than the maxillary 1st molar
DL
What is the eruption time for the maxillary 3rd molar
17-21 years
maxillary 3rd molar is the (smallest/biggest) molar
smallest
T/F: The maxillary 3rd molar is the most variable tooth in the maxillary arch
t
What crown shape is most common for maxillary 3rd molar
heart shaped
Roots in maxillary 3rd molar are most commonly (separated/ fused)
fused
maxillary 3rd molar with (what number of) roots is most common
3- either partially or completely fused
T/F: maxillary 3rd molar are often congenitally missing or impacted
T
maxillary 3rd molar with 2 buccal cusps and 1 lingual cusp have (crown shape)
heart shaped
maxillary 3rd molar with 2 buccal cusps and 2 lingual cusps have (crown shape)
heart shaped
maxillary 3rd molar with 1 continuous cusp has (crown shape)
rectangle
