Permanent Molars, Dental Anatomy Final

Front 1

When does the maxillary 1st molar erupt?

How is it different from all the other teeth?

Back 1

ﰀﰀ Largest crown in mouth; anchor tooth of
maxillary dentition; presents basic pattern
maxillary dentition;

for permanent maxillary molars; others

differ only with respect to the proportion of their components parts


ﰀﰀ Erupts Age 6 (soon after mandibular 1st)

Front 2

Buccal aspect max 1st molar
1) How many cusps? Describe the relative sizes
2) Cervical third shape?
3) Describe distal profile
4) Describe the buccal CEJ?
5) How many roots are there?

Front 3

Lingual aspect of the max 1st molar
1) Which cusp is the largest?
2) How many lingual cusps are there?
3) Describe the shape of the lingual CEJ?
4) M and D profiles ?
5) Describe the lingual roots

Back 3

ﰀﰀ MLis largest cusps (extends 3/5 of Lingual Aspect: entire width mesiodistally)

ﰀﰀ Cusp of Carabelli (fifth cusp)arises from the lingual surface of the ML cusp
ﰀﰀ DL cusp is smaller and rounded
ﰀﰀ Two lingual cusps separated by distolingual groove which may terminate in a lingual pit in the central portion of the lingual surface
ﰀﰀ Lingual CEJ straight to slightly convex
ﰀﰀ Mesial and distal profiles similar to buccal aspect; M and D contact areas in middle third
ﰀﰀ Dominant lingual root(has shallow depression along cervical 2/3 of root); lingual root is broader mesiodistally than buccolingually (the opposite applies to the two buccal roots)

Front 4

Mesial aspect Max 1st molar
1) Mes marginal ridge connects what?
2) What is the outline form of the crown?
3) Describe the buccal and lingual profiles
4) Describe the shapes of all the roots
5) Where is the contact area?
6) Describe the CEJ

Back 4

ﰀﰀ Mesial marginal ridge connects MB and ML cusps; may have tubercles or mesial marginal groove
ﰀﰀ Crown has trapezoidal outline form ﰀﰀ Buccal profile may appear slightly
concave in middle third ﰀﰀ Lingual profile uniformly convex with
maximum convexity in middle third
ﰀﰀ MB root broad buccolingually and projects straight beyond crown surface slightly toward the buccal

ﰀﰀ Lingual root is shaped like banana and resembles curvature of human vertebrae; it first extends lingually beyond crown outline, then curves in toward the buccal; ML furcation visible
ﰀﰀ Contact area in middle third,slightly buccal and occlusal to crown midpoint
ﰀﰀ CEJ shallow and irregularly curved toward the occlusal

Front 5

Distal aspect of max 1st molar

1) B and L profiles?
2) Describe the differences in the distal and mesial marginal ridges
3) What surface is more visible from this aspect?
4) Describe the roots

Back 5

ﰀﰀ B and L profiles similarto mesial aspect
ﰀﰀ Distal marginal ridge shorter than mesial marginal ridge buccolingually
ﰀﰀ Buccal surface more visible due to rhomboidal crown form
ﰀﰀ Three roots visible because DB root is smaller than MB root; L root remains the same
ﰀﰀ DL furcation visible

Front 6

Occlusal aspect max 1st molar
1) What outline form?
2) In what dimension is it wider?
3) Which marginal ridge is wider?
4) Describe the relative sizes of all the cusps
5) Where are the Trigon and Talon?
6) Where is the oblique ridge?
7) How many fossa does it have, and where are they located?

Back 6

Occlusal Aspect:
ﰀﰀ Rhomboid outline form;MB and DL line angles are acute; ML and DB line angles are obtuse
ﰀﰀ Wider buccolingually than mesiodistally
ﰀﰀ Mesial marginal ridge wider buccolingually and more prominent than distal marginal ridge
ﰀﰀ Cusps:ML>MB>DB>DL>Carabelli(5th cusp is not part of occlusal surface or occlusal table)
ﰀﰀ Two parts:Trigon (mesial part)outlined by the MB, ML, and DB cusps and Talon (heel) defined by the DL cusp
ﰀﰀ Oblique ridge extends from ML cusp to DB cusp
ﰀﰀ 3 fossae:central fossa(contains central pit), mesial triangular fossa, and distal triangular fossa which is continuous with the distal fossa running distal to and parallel to the oblique ridge and connects with the distolingual groove

Front 7

Max 1st molar roots
1) What happens wt the root trunk?
2) Which root is the largest and what's the shape of this?
3) Which root is the 2nd larest?
4) Smallest root? Describe its dimensions

Front 8

When does Max 2nd molar erupt? How is it similar to 1st molar, and how is it different?

Front 9

Max 2nd molar buccal aspect
1. crown is shorter and narrowed _____ than M1
2. roots is shortr and closer to each other and ____________ than M1
3. ___ cusp more prominent and sharp than M1

Front 10

Max 2nd molar lingual
1. What cusp is smaller
2. What cusp is missing here?
3. What groove terminates at a oint further distal and occluon on lingual surfance than the same groove of M1 which ends more midlingual?

Front 11

Max 2nd molar mesial
1. What roots are less divergent?
2. What marginal ridge is less pronounced?
3. What concavity is flattened and not as pronounced?

Front 12

Max 2nd molar distal
1. What 2 cusps are smaller, and what surface is more visible becuase of this?

Front 13

Max 2nd molar occlusal form
1. What outline form does it have? What line angles are more acue than m1?
2. In what dimension does it appear more constricted than M1?
3. What cusp is markedly smaller?

Front 14

Max 2nd molar roots
1. What roots are inclined closer together?
2. What root is smaller than M1?
3. how many pulp canals per root?
4. How many pulp horns per cusp?

Front 15

general aspects of Max 3rd molar
1. When does it erupt?
2. Roots?
3. Crown profile?
4. Why is the occlusal form shaped like it is?
5. What cusp is reduced?
6. What ridge is barely visible?

Front 16

Mand 1st molar generalities
1. When does it erupt?
2. How many cusps?
3. How is it unique from all the other teeth?

Front 17

Mand 1st molar, buccal aspect
1. What are the cusps biggest to smallest?
2. Where would the buccal pit be?
3. Descirbe the mesial profile.
4. Describe the distal profile?
5. Describe buccal CEJ
6. How many roots are seen? Describe shape of each one

Front 18

Mand 1st molar Lingual
1. What surface is smaller mesiodistally?
2. How many cusps are sep by lingual groove?
3. What cusps is taller? Lingual or B?
4. Describe the M and D profiles.
5. What can you sort of see from this view?
6. How are the roots from this view different than from bucca aspect?

Front 19

Mand 1st molar mesial
1. What cusps is taller?
2. Where would you groove?
3. Describe buccal profile
4. describe lingual profile. Describe the CEJ
5. Where is the flatterend for concave area?
6. Where is the contact area?

Front 20

Mand 1st molar distal
1. What surface is smaller than the mesial view?
2. What cusp is more lingually positioned?
3. What marginal ridge is shorter?
4. What root is narrower buccolingually with a shallow distal depression?

Front 21

Mand 1st molar occlusal
1. What's the shape of teh outline form?
2. In what dimension is wider?
3. Describe the sizes of the cusps
4. How many fossa, and what shape?
5. How many grooves and where?

Front 22

Mand 1st molar roots
1. How many roots?
2. In what dimension are they wider?
3. Where does it have developmental depression?
4. Describe CEJ

Front 23

Mand 2nd molar
1. What age does it erupt?
2. How many cusps does it have?

Front 24

Mand 2nd molar - buccal
1. Smaller than, but larger than?
2. What would the cusps be separated?
3. How many roots does it have?
4. Where does CEJ have?

Back 24

1. Smaller than M1, larger than M3
2. 2 cusps (MB>DB) sep. by buccal groove
3. roots closer together shower greater distal inclination
4. CEJ has little curvature

Front 25

Mand 2nd molar - lingual
1. Lingual width is larger?
2. crown is shorter in what dimension?
3. 2 cusps, which is more prominent?

Front 26

Mand 2nd molar - mesial
1. mesial marg. ridge is what compared to M1?
2. root is ____ than M1?

Front 27

Mand 2nd - distal
1. Wider in what dimension?
2. what cusp is absent?
3. What surface is as large as mesial?
4. What root is narrower?

Front 28

Mand 2nd molar - occlusal
1. What shape is the outline form?
2. how many cusps does it have?
3. How many grooves? How many fossas?
4. What part of the crown is wider?

Front 29

How many roots does the Mand 2nd molar have?

Front 30

Mand 3rd molar
1. What is this smaller than?
2. How is the outline form?
3. What are the roots?