Maxillary Permanent Molars

Maxillary molars typically have ____ distinct cusps, what are the variations we see?

4

some have 5 (first molars) and some have 3 (second molars)

(Mesial/distal) cusps of maxillary molars are longer

mesial

Maxillary molars have ____ roots ; name them

3 ; lingual aka palatal, distobuccal and mesiobuccal

Occlusal surfaces of maxillary molars tilt towards the (mesial/distal)

distal

(T/F): The Maxillary molars are wider mesiodistally than buccolingually

False they are wider buccolingually

(T/F): Maxillary molars are wider mesiobucally than occlusocervically

true

Maxillary (first/second) molars have more spread

first - makes the lingual root look more central

Maxillary (first/second) molars have buccal cusps that are more equal in size

first

Maxillary (first/second) molars have a mesiobuccal cusp that is larger than the distobuccal cusp

second

Maxillary (first/second) molars have the cusp of carabelli

first

(T/F): 3-cusp maxillary molars will have a lingual groove

F ; they won't have one

Maxillary (first/second) molars have a greater root flare

first

Maxillary (first/second) molars have root that are in line with the crown

second

(T/F): all three root of maxillary first moles are visible from the mesial view

False ; they are only are three visible form the distal view due to the mesial root being so wide

L is mesial view

Maxillary (first/second) molars have a more equal crown width in the lingual

first

Maxillary (first/second) molars have a nearly square outline

first

Maxillary (first/second) molars have a more narrow lingual crown

second

Maxillary (first/second) molars have a drastically smaller distolingal cusp

second

Maxillary (first/second) molars can sometimes have 3 cusps, leading to a heart shaped molar

second

____% of the population is congenitally missing at least one third molar

20%

Maxillary third molars occlude with ___ teeth

1

Which maxillary molar have the shortest roots and most bulbous crowns?

third molars

Mandibular third molars usually have ____ roots

2 roots, usually fused together

lip like structure that serves as a protective covers for the third molar

operculum

Doctors usually recommended to remove third molars before what age

25

Mandibular molars with extra mesiobuccal cusplet is most common on which molar?

mandibular third molars

- NOT cusp of carabelli

Common in the Prima Native
Americans of Arizona
○ Also seen in those of Indian
descen

What is tuberculum intermedium?

a third lingual cusp on mandibular molars

- common in those of chinese descent

The cusp of carabelli is most commonly seen on what molar?

maxillary first molar - 70.5% of the time

What is dilaceration

severe bending of the roots

c an make endodontic
treatment very challenging
○ Can make extractions more
complicated

whats the deal with maxillary molars cusps

Mesial cusps are taller than distal cusp

which cusp on the maxillary 2nd molar sometimes be missing

distolingual cusp

where are tubercules on maxillary molars?

on marginal ridges, more common on mesial marginal ridges

maxillary 2nd molar crown outline?

 
twisted parallelogram 

maxillary 1st molar crown outline?

square crown outline 

how many fossas does 4-cusp maxillary molars have 

4

mandibular 3rd molar crown outline?

Somewhat rectangular crown outline 

What isnt true about Third molars

■ Softer enamel
■ Crowding of the anterior teeth