Molars Flashcards
Molars take up more area on which arch?
Mand (51%) vs max (44%)
All molars MD vs OC
MD greater than OC
Do molars taper narrower distally or mesially
distally from occlusal and buccal view
Contacts for all molars
M: junction
D: middle third
Mandibular molars FL vs MD
MD longer
Maxillary molars FL vs MD
FL slightly longer
Maxillary molar occlusal shape
square or rhomboid
Mand. molar occlusal shape
rectangle or parallelogram
Mand molars crown tilt
lingually and slightly buccally
is the mesiobuccal or distobuccal groove of a mand 1M more likely to decay
mesiobuccal groove b/c it usually extends into middle third of crown
Mesial or distal contour of mand 1M greater at CEJ?
Distal contour greater towards CEJ
Mand 1M vs 2M: which has longer and more divergent roots?
Mand 1M
What percent of Mand 1M lack a distal cusp?
15-20%
Are lingual grooves on mand molars likely to be carious
Nah
What way does CEJ slope occlusally on mand molars?
occlusally from buccal to lingual
What grooves join central groove together on mand 1M
Mesiobuccal and lingual
Which cusps are longest and shortest on max molar
Longest-mesiolingual
Shortest-distolingual
Which max molar more likely to be missing DL cusp?
2nd (33%)
Is the lingual groove on max molars caries prone?
Yes
T or F: Max M always taper narrower lingually.
F. If max 1M has large DL cusp may be wider MD than buccal MD dimension
Transverse vs oblique ridge max M
Transverse ridge: ML to MB cusp
Oblique ridge: ML to DB cusp
Four cusp type max M has how many fossae?
4
Distal triangular is minute
Are mesial contacts typically more buccally located or lingually located than distal contacts?
Mesial
Distal contact of Max 1M location
centrally located. Exception!
