maxillary molar

In which direction are maxillary molars shorter?

Occlusogingivally

In which direction are maxillary molars wider?

Buccolingually

How many lobes do maxillary molars develop from?

4 lobes

How many cusps does the maxillary first molar have?

5 cusps (including cusp of Carabelli)

How many cusps does the maxillary second molar have?

4 cusps (sometimes 3)

How many cusps does the maxillary third molar have?

3 or 4 cusps (variable)

List the cusps of maxillary molars from largest to smallest.

ML > MB > DB > DL > Cusp of Carabelli

Where is the cusp of Carabelli found?

On the lingual surface of the mesiolingual cusp of the maxillary first molar

How many buccal cusps do maxillary molars have?

2 buccal cusps (mesiobuccal and distobuccal)

What separates the buccal cusps of maxillary molars?

Buccal developmental groove

Which maxillary molar has a buccal pit at the end of the buccal groove?

Maxillary first molar

How many roots do maxillary molars have?

3 roots: lingual (largest), mesiobuccal (second largest), distobuccal (smallest)

How many root canals does the maxillary first molar have?

4 canals (2 in MB root)

How many root canals does the maxillary second molar have?

3 canals

How many root canals does the maxillary third molar have?

3 canals (sometimes fewer, variable)

What is the area where the roots come together called?

Furcation

What is the base of the furcation area called?

Root trunk

Which root of the maxillary first molar is described as banana shaped?

Lingual root

What shape is the occlusal outline of a 4-cusped molar?

Rhomboidal

What shape is the occlusal outline of a 3-cusped molar?

Heart-shaped

How many triangular ridges are found on a maxillary molar?

4 triangular ridges

What structure runs DB to ML on the occlusal surface of the maxillary molars?

Oblique ridge

What transverse ridge is found on a maxillary molar?

One transverse ridge (between MB and ML cusps)

What pits are found on the occlusal surface of a maxillary molar?

Central, distal, and mesial pits

What is the name of the large fossa on a maxillary molar?

Central fossa

What is the name of the small fossa found on a maxillary molar?

Distal fossa and mesial triangular fossa

Do maxillary molars erupt before or after their mandibular counterparts?

After

Which tooth will have the most wrinkled appearance?

Maxillary third molar

How is the cusp of Carabelli described in terms of functionality?

Nonfunctional (supplemental) and always attached to the mesiolingual cusp.

Which root on the maxillary first molar has 2 root canals?

Mesiobuccal root

Which marginal ridge is more cervically located?

Distal marginal ridge

Which marginal ridge is more occlusally located?

Mesial marginal ridge

What separates the cusp of Carabelli from the ML cusp?

Developmental groove (cusp of Carabelli groove)

On which tooth is the oblique ridge more prominent?

Maxillary first molar

Which tooth has the longest root trunk?

Maxillary third molar