Dental Anatomy

Front 1

Maxillary Second Molar

Back 1

Mostly 4 cusp
Rhomboidal or heart shaped
DL cusp is absent or very small
3 Roots: 2B (often fused) and 1L
Right/Left: Large ML cusp, small DL cusp, and 3 roots make it easy to distinguish

Front 2

Maxillary First Molar

Back 2

5 cusp (cusp of carabelli non-fnxal)
Rhomboidal shape
Seperated by B developmental groove
Cusp size: ML>MB>DB>DL
3 Roots: 2 B and 1L
Right/Left: Large ML cusp, Large L root, and cusp of carabelli

Front 3

Maxillary Second Premolar

Back 3

2 Cusp - usually equal in length
Lingual cusp usually tilts toward Mesial
No mesial marginal ridge
Occlusal table is more rounded than first premolar
Root: 1 Root, it may tilt toward distal
Right/Left: Tilt of Lingual cusp

Front 4

Maxillary First Premolar

Back 4

2 Cusp - Buccal cusp is longest
Prominent buccal ridge
Both cusp tips are shifted toward the mesial
Right/Left: Mesial developmental depression and ligual cusp is tilted mesially
Roots: 80% of max. first premolars have 2 roots

Front 5

Maxillary Canine

Back 5

Distal cusp ridge is longer than mesial cusp ridge
Cusp tip points toward mesial

Front 6

Maillary Lateral

Back 6

More narrow M-D
Distal incisal angle is more rounded
Ingual anatomy is more prominent and sometimes a pit
Root is longer than central's root

Front 7

Maxillary Central

Back 7

3 developmental ridges
Larger M-D than C-I

Front 8

Mandibular Central

Back 8

Smallest tooth in arch
No definite marginal ridges
Very symetrical

Front 9

Mandibular Lateral

Back 9

Resembles mandibular central but larger proportions
Incisal edge is "twisted" from the 90 degree angel with a line passing labiolingually through the tooth

Front 10

Mandibular Canine

Back 10

More narrow than upper canine
Opposite from upper canine the cups tilts toward distal and has lingual inclination
Has nearly straight mesial line angle
Cingulum is less prominent than maxillary canine

Front 11

Mandibular First Premolar

Back 11

"Snake eyes"
Most ill-defined lingual cusp
Distinct feature: ML developmental groove
Large buccal cusp centered over root tip
Right/Left: Distal fossa is more developed and distal surface has a longer radius of curvature

Front 12

Mandibular Second Premolar

Back 12

Can have 2 lingual cusp and mesial is larger of the two
With only one ligual cusp, the cusp is tilted toward mesial
Lingual cusp is more prominent than the first premolar's lingual cusp
Y-shape has central pit
U and H-shape have developmental groove that crosses transverse ridge

Front 13

Mandibular First Molar

Back 13

5 cusps: 3B 2 L
MB cusp is usually widest and generally largest of all 5 cusp
Pentagonal occlusal outline
2 Root: 1D 1M

Front 14

Mandibular Second Molar

Back 14

4 Cusp
2 Roots: Mesial root is thicker than the distal root
Occlusal table: Mesial is more narrow than distal

Front 15

Back 15

Maxillary Right First Premolar

Front 16

Back 16

Maxillary Right Second Premolar

Front 17

Back 17

Mandibular Right First Premolar

Front 18

Back 18

Mandibular Right Second Premolar

Front 19

Back 19

Maxillary Right First Molar

Front 20

Back 20

Maxillary Right Second Molar

Front 21

Back 21

Mandibular Right First Molar

Front 22

Back 22

Mandibular Right Second Molar

Front 23

Back 23

Maxillary Canine

Front 24

Back 24

Mandibular Canine