Permanent Maxillary Molars Flashcards
How many buccal cusps do both maxillary first and second molars have and what are they?
two, mesiobuccal and distobuccal
Which cusp is wider mesiodistally than distobuccally on both maxillary molars?
mesiobuccal
Between which cusps is there a buccal groove evident on both molars?
buccal cusps
Which side of the crown tapers shorter? distal or mesial
distal
Which cusp is longer? mesiobuccal or distobuccal?
mesiobuccal
What is the widest tooth in the maxillary arch?
maxillary first molar
How many roots are on both first and second maxillary molars and what are they?
three, mesiobuccal, distobuccal, and lingual
Which maxillary molar has roots that are less spread out, less curved, and longer root trunks?
second
Which maxillary molar has roots that are more spread out with buccal roots bending distally and root trunks that are relatively long
first
Which maxillary molars have longer root trunks?
second
Which maxillary molar has roots that bend distally in the apical third?
second
Is the mesiobuccal or distobuccal root longer on both maxillary molars?
mesiobuccal
Which direction does the crown tilt on the root base with the occlusal surface shorter on distal for both maxillary molars?
distally
Which maxillary molar often has a cusp of carabelli?
first
How many lingual cusps do the maxillary first molars have and what are they?
three, mesiolingual, distolingual, and carabelli
If the second molar has one lingual cusp, which cusp is absent?
distolingual
Which cusp is larger than the distolingual cusp on first molars?
mesiolingual
What is the smallest cusp on first molars?
cusp of carabelli
What root is the longest and does not curve but tapers apically to a blunt apex on both maxillary molars?
lingual root
What lingual cusp is the cusp of carabelli present on on first molars?
mesiolingual
Do maxillary second molars have a cusp of carabelli?
no
On which maxillary molar is the mesiolingual cusp ONLY slightly larger than the distolingual cusp?
first
On which maxillary molar is the mesiolingual cusp much larger than the distolingual cusp?
second
Is the mesial or distal half of the crown shorter on both maxillary molars?
distal
Which marginal ridge is located more cervically on both maxillary molars?
distal
Which maxillary molar has less root flare from the proximal view of the tooth?
second
Which root is visible behind the narrower distobuccal root from the distal view on both maxillary molars?
mesiobuccal
Which root has a longitudinal depression on its mesial surface and possibly a depression on its distal surface dividing the root into buccal and lingual halves indicating the likelihood of two root canals within?
mesiobuccal root
From the occlusal surface, which cusp appears to be slightly smaller?
distolingual
Which maxillary molar often has a wider crown on the lingual half of the occlusal surface?
first
Which maxillary molar often has a narrower crown on the lingual half of the occlusal surface?
second
What is the shape of the occlusal surface of maxillary first molars?
square or parallelogram
What is the shape of the occlusal surface of maxillary second molars?
twisted parallelogram
Which maxillary molar has a larger crown from the occlusal surface?
first
Which maxillary molar has a smaller oblique ridge on the occlusal surface?
second
Which maxillary molar has a less prominent mesiobuccal cervical ridge?
first
How many fossae/cusps are on maxillary first molars and what are they?
four on four-cusp type, central fossa (largest), mesial triangular fossa, distal triangular fossa, and the distal fosse (cigar-shaped)
On maxillary second molars with three fossa/cusps, what fossa is absent when the distolingual cusp is absent?
distal fossa
On maxillary second molars that are three cusp type, how many fossae are there and what are they?
three, central (large), and two small triangular fossa
What are the grooves on four or five cusp type maxillary molars?
central, buccal, transverse, and distal oblique
What are the grooves on maxillary second molars?
central and buccal
What cusp is the cusp of carabelli on?
mesiolingual
Is the distolingual or mesiolingual cusp smaller?
distolingual
Which cusp is smaller than the mesiobuccal and distobuccal cusp of maxillary molars?
meisolinugal
What two angles of the crowns of maxillary molars are more acute?
mesiobuccal and mesiolingual
What cervical ridge is visible for both molars on the occlusal surface?
mesiobuccal
Is the mesial or distal half of the crown smaller faciolingually for both maxillary molars?
distal
