Molars

Question 1

Each developmental lobe forms how many cusps

Answer 1

One cusp per lobe

Question 2

Compare molar crown height to other teeth

Answer 2

Molar crowns are shorter occlusocervically than all other crowns

Question 3

Max cusp lengths in order

Answer 3

ML

MB

DB

DL

Question 4

What shape are max molars from the occlusal view?

Answer 4

Twisted and more square

Question 5

Root fraction placement

Answer 5

Mand molars is closer to the cervical line, making root trunk short

Question 6

What shape are mand molars? Exception?

Answer 6

They are more rectangular in shape

Exception: mand first molars are pentagon shape

Question 7

Max and mand molars proximal view

Answer 7

Crown centered over root

Mand
Crown tipped linguallly over root

Question 8

Molars are ______ occlusocervically than mesiodistally

Answer 8

SHORTER

Question 9

Max molars have how many roots

Mand molars have how many roots

Sizes and number of canals

Answer 9

Max- 3, palatal is the longest, DB is shortest
Roots are trunkated
Usually 3-4 canals

Mand- 2 roots and usually M root is longest
Usually 3 canals
2 canals in mesial root

Question 10

Max molar roots are closer together on which tooth

Answer 10

Roots are closer together on max 2 molars

Question 11

Oblique ridge

Answer 11

DB to ML cusps for this ridge

Most prominent on max 1 molars, on max molars only

Question 12

First permanent teeth to show evidence of calcification at birth?

Answer 12

First molars

Question 13

Max molars buccal view

Mand molars buccal view

Answer 13

ML cusp visible
2 buccal cusps
Buccal groove 
Deep developmental groove on root
Longer root trunk
Crown centered over root 

Mand
2 or 3 buccal cusps
Both lingual cusps visible
2 buccal grooves 
Shorter root trunk
Crown tipped distallly on root

Question 14

Mand 2 molar has how many cusps

Answer 14

4 cusps

Question 15

Max 2 molars with only three cusps are called what

Answer 15

Tricuspid form

Question 16

From occlusal view, the contacts of max molars are all

Answer 16

Located buccal to the center of the tooth, mesial contact is more buccal than the distal

Question 17

Four functions of molars

Answer 17

1. Chew food
2. Vertical dimension, prevent chin from moving up
3. Maintain arch integrity, help keep other teeth in proper alignment
4. Provide cheek support, keep cheeks from sinking in, maintain esthetics of face

Question 18

Three obvious functions so of posterior teeth

Answer 18

1. Chew food
2. Provide support
3. Maintain vertical dimension

Question 19

Max molars are _____ BL than MD

Answer 19

Wider

Question 20

HOC for all molars

Answer 20

Same as premolars

PROXIMAL VIEW:
Buccal HOC is cervical third

Lingual HOC is the middle third

Question 21

Contact areas for molars

Answer 21

Near the junction of the occlusal/middle third

The distal is more cervical than the distal

Question 22

Buccal HOC and lingual HOC for all molars

Answer 22

Buccal HOC is cervical

Lingual HOC is middle

Question 23

How many cusps do max molars have and size

Exceptions

Answer 23

3 to 5 cusps
ML is usually the largest and the longest
DL is usually the smallest or nonexistent

When there are 4, the DL is the smallest

Max second molars usually have 3 cusps, the DL cusp is missing

Max first molars usuallly have a fifth cusp, cusp of caribelli
On lingual surface of ML cusp

Question 24

Widest tooth in upper arch

Answer 24

Max 1 molar

Question 25

Largest to smallest cusps on mand 1 molars

Answer 25

ML DL MB DB DB2

Question 26

How many cusps do mand molars have and sizes Exception

Answer 26

4 usually, they are all large 2 lingual cusps are about equal size Most mand first molars have a fifth cusp that is smaller and located dismally to the DB cusp

Question 27

What percent of the MD dimension do max and mand molars take up?

Answer 27

Max- 44% | Mand- over half of the MD dimension

Question 28

Number of cusps on mand 1 molar

Answer 28

3 buccal 2 lingual Usually 5 total

Question 29

Which cusps are taller on mand molars

Answer 29

Lingual cusps are taller than buccal cusps on mand molars

Question 30

Max 2 molar roots from the proximal view

Answer 30

Do not spread as much as the first molars They stay within the confines of the crown

Question 31

Mand molars are ______ MD than BL

Answer 31

Wider

Question 32

Are molars considered succedaneous teeth?

Answer 32

NO!!! They do not replace baby teeth, they come in behind them

Question 33

Molar contact location

Answer 33

All molar contacts are: Mesial: occlusal middle Distal: middle

Question 34

Most molars from the occlusal view taper to which sides? What is the exception

Answer 34

BL: Most molars get narrower going to the lingual side, the lingual is shorter than the Buffalo MD: Most molars get narrower going to the distal side, the distal is shorter than the mesial BL Exception: max first molars with large DL cusps, taper to the buccal, buccal is shorter than the lingual MD Exception: mand first molars, the widest aspect going from M to D is the middle third , the lingual embrasure may be wider than the facial embrasure

Question 35

Tricuspid form max molars

Answer 35

Are max 2 molars They have NO lingual groove bc they have no DL cusp or lingual root depression

Question 36

What is the exception to the 1 cusp per lobe rule?

Answer 36

The max first molar cusp of carabelli does NOT have its own lobe

Question 37

Result of vertical dimension loss

Answer 37

Eventually creates an overbit/over jet because the jaw eventually closes too far This is called a protruding chin

Question 38

Max 2 molar roots are inclined more ___ than max 1 molars

Answer 38

Distally

Question 39

What teeth have the largest root to crown ratio

Answer 39

Mand molars

Question 40

Crowns on mand teeth are tilted ______ over the roots

Answer 40

Lingually

Question 41

Crown height tapers to which side from the buccal view of a max molar

Answer 41

Crown tapers and is shorter on the distal than the mesial

Question 42

Tricuspid molars are what shape

Answer 42

1/3 of Max 2 molars are heart shaped

Question 43

Max molars lingual view Mand molars

Answer 43

Lingual groove off center towards distal ML cusp larger Mand Lingual groove usually centered ML and DL cusps are about same size

Question 44

How many cusps do max and mand molars have?

Answer 44

Max- 4 | Mand- 5

Question 45

Majority of max 2 molars have how many cusps

Answer 45

4 cusps In 3 cusp teeth the DL cusp is missing

Question 46

Tooth with largest MD length

Answer 46

Mand 1 molars

Question 47

Describe occlusal surface of molars

Answer 47

Have a broader occlusal surface than any other teeth, both faciolingually and mesiodistally