Molars Flashcards
What’s the occlusal outline form shape for Max 1st molars?
Rhomboid
Which occlusal angles tend to be acute angles on Max 1st molars?
mesiofacial
Distolingual
Which occlusal angles tend to be obtuse angles on Max 1st molars?
Mesiolingual
Distofacial
Which side (buccal or lingual) does the Max 1st molar taper more? Which side has a bigger embrasure?
Buccal
Buccal
Which side of maxillary molars is more prone to caries?
Lingual
Which side of a mandibular molar is more prone to caries?
Buccal
What’s the largest root of the Max 1st molar?
Palatal
What’s the smallest root of the max 1st molar?
Distobuccal
Is the mesiobuccal or distobuccal root larger on Maxillary 1st molar?
Mesiobuccal
What root usually has the 4th canal on the maxillary 1st molar?
Mesiobuccal root
Of the three furcations on the maxillary 1st molar which one (m, d, b) is closest to the cervical line?
Mesial
What is the order of furcation distance to the cervical line (with closest to the cervical line being first) on the max 1st molar?
Mesial>Buccal>Distal
What anatomic landmark on max 1st molar forms the distal boundary of the central fossa?
Oblique ridge
What angles on the max 1st molar make up the edges of the oblique ridge? What cusps?
Obtuse angles
Mesiolingual/Distofacial cusps
Is the height of the marginal ridge on Max 1st molar the same as the oblique ridge?
Yes same height.
What tooth in the mouth has the greatest facial lingual length?
Max 1st molar
Which tooth has the cusp of carabelli?
Max 1st molar
Which maxillary posterior tooth has the closest FL and MD lengths (squareness)?
Max 1st molar
Which max 1st molar cusp is largest and longest?
Mesiolingual
Which max 1st molar cusp is the only one not included in the cusp triangle?
distolingual cusp
What’s the tooth most likely to be forced into the maxillary sinus during extraction?
Max 1st molar
Which tooth has a shorter distolingual groove? The max 1st or 2nd molar?
Max 1st molar
On the max 2nd molar what is the only cusp to not be part of the cusp triangle?
Distolingual
If the distolingual cusp is missing on the max 2nd molar what is the occlusal shape?
heart shaped
Which tooth (Max 1st or 2nd molar) have less divergent roots and which direction are they pointing?
Max 2nd molar
distally pointed
What does the groove pattern look like for the mand 1st molar?
Y shape or dryopethicus
What’s the occlusal outline shape of a mand 1st molar?
Pentagon
What’s the smallest cusp on the mandibular 1 molar?
distal
What’s the largest cusp of the mandibular first molar?
Mesio buccal
What are the cusp sizes (large to small) of the mand 1st molar?
mb>mL>dL>dB>D
Which tooth has the largest M-D crown dimension of any other tooth?
mandibular 1st molar
What are the only mand teeth to have a wider m-d dimension than facio-lingually?
mand 1st molar
Which molar has the greatest m-d diameter
mand 1st molar
What posterior tooth is the only posterior tooth to have wider m-d dimensions than buccal lingual?
mand molars
Which mand tooth has the largest buccal-lingual dimension of any mand teeth?
mand molar
Which tooth overall has the biggest buccal lingual dimension?
max 1st molar
Which mandibular molar has the largest occlusal cervical crown dimension?
mand 1st molar
Where are the facial surfaces of the mandibular molars located medial to?
border of the ascending ramus
What’s the difference in developmental grooves with mand 1 and 2 molars?
1st molars have 2 developmental grooves
2nd molars only have 1.
How many facial cusps does the mand 1 molar have?
3
Where is the developmental groove between the distofacial and distal cusp located?
distofacial (you can still see it facially)
How many roots and canals does the mand 1st molar have?
2 roots
3 canals
How many mesial canals does the mand 1st molar have?
2 mesial canals
Which molar has the longest root of any other molar?
mand 1 molar
Which tooth has the greatest root separation of any other tooth?
mand 1st molar
At mid root cross section of mand 1 molars which root is going to be the largest?
mesial root
Which root from which tooth has the greatest faciolingual dimension?
mand 1st molar mesial root
Where does the distobuccal cusp of the mandibular molars occlude with maxillary molars?
Central fossa
What does the ideal position and height of the lingual cusps of mandibular 1st molar accomodate?
working movements
Where is the shortest interdental papilla found between?
mand 2nd premolar and 1st molar
What does the occlusal groove pattern of the mand 2 molar look like?
a cross/cruciform
From the occlusal view of the mand 2 molar which side (mesial or distal) is wider facio-lingually?
mesial 1/3
The crown of the mand 2nd molar inclines to which 2 directions?
mesial and lingual (think of the bigger mesial cusps weighing it down)
Which way is the roots apices of mandibular molars facing? and what about the crown?
Roots: facial
Crown facing: lingual
Which two teeth only occlude with a single tooth of the opposing arch?
Maxillary 3rd molar
Mandibular central
Which molar frequently only has 3 cusps?
max 3rd molar
What shape are maxillary 3rd molars from the occlusal view and why?
heart shaped
they are missing the distal lingual cusp
Which tooth has the most variation in crown morphology of any tooth? What’s the next tooth with most variation?
3rd molars
Maxillary laterals
Which tooth has greatest distal root inclination of any tooth?
mand 3rd molars
Which mandibular tooth has the shortest root?
mand 3rd molars
Which tooth is the shortest of all permanent teeth?
max 3rd molar