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Dental Anatomy > Tooth ID Lecture > Flashcards

Tooth ID Lecture Flashcards

1
Q

Anterior Teeth vs. Posterior Teeth

A

Anterior: incisal surface or single cusp

Posterior: more than one cusp

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2
Q

Mesial vs. Distal

A

From labial view

Mesial surface of crown is straighter

Mesio-incisal line angle is more sqaure

Distal surface of crown is more rounded or curved

Disto-incisal line angle is more round

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3
Q

Which outline of crown has more curvature

CI or LI?

A

LI

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4
Q

Which has more distinct lingual anatomy

Maxillary or Mandibular Incisors?

Lateral or Central?

A

Maxillary Lateral

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5
Q

Maxillary CI

Facial View

A

Crown of CI is widest mesiodistally of any of the anterior teeth

Mesiodistal dimension is close to incisocervical dimension

Crown is somewhat square

Surface is smooth and convex

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6
Q

Maxillary CI

Incisal View

A

Incisal View:

Cingulum may bulk to the distal

Triangular

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7
Q

Maxillary LI compared to CI

Facial View

Outline not as ____ as CI

____ bulky and ____ slender than CI

MD ____ than CI

Shape?_____

  • Longer____
  • Shorter ____

Significant ___ of ___ ____

IC and MD dimensions are ____ (rounded_

A

Facial view:

Outline not as square as CI

Less bulky and more slender than CI

MD narrower than CI

Rectangular

Longer incisocervically

Shorter mesiodistally

Significant rounding of disto-incisal line angle

IC and MD dimensions are convex (rounded

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8
Q

Mandibular Incisors

CI vs LI

A

Cingulum

Centered on mandibular CI

Offset to distal on mandibular LI

Bulk rightà It’s a right

Bulk leftà It’s a left

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9
Q

Man CI

Incisal line angles

Mesial and Distal surfaces

A

Central Incisor (Just identify as 24/25)

Incisal line angles are square

Mesial and Distal surfaces are straight

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10
Q

Mandibular Lateral Incisor

A

Distoincisal line angle is rounded

Sometimes seen on mandibular central incisors

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11
Q

Canine

Maxillary vs. Mandibular

A

Crown

  • Maxillary:
    • Short and Wide
    • In line with long axis of tooth (from facial)
  • Mandibular:
    • Long and narrow
    • Tilts lingually relative to long axis of root (from facial)
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12
Q

Labial and Lingual View

Canine

Note: The crowns of some maxillary canines are ___ ____

Lingual View:

A

Labial View

Note: Crowns of some maxillary canines are long incisocervically

Lingual ViewHas marginal ridges, large cingulum and a mesial and distal fossa

Distal fossa is deeper than mesial fossa

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13
Q

Canine Proximal View

Maxillary vs. Mandibular

Incisal Surface

A

Incisal Surface

Maxillary canine: Labial to long axis of the tooth

Mandibular canine: Lingual to long axis of the tooth

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14
Q

Incisal View

Maxillary vs. Mandibular Canine

A

Maxillary

Can see a lot of the lingual surface

Mandibular

Can see a lot of the facial surface

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15
Q

R vs. L

Maxillary Canine

_____ ____ than mandibular

___ ___ ___ ___ in the ____ ___ of the ___

Incisal View:

____
____

A

Wider mesiodistally than mandibular

Distal contact area protrudes in middle 1/3 of crown

Incisal view:

Mesial surface is straighter.

Distal surface is more curved

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16
Q

R vs. L Mandibular Canine

Mesial surface is ____

Distal surface is more ___

Incisal view:

____

Mesial surface is ___

Distal surface is ___

A

Crown is long and narrow

Mesial surface is straighter

Distal surface is more curved

Incisal view:

Can see small amount of cingulum

Mesial surface is straighter

Distal surface is rounded

17
Q

Premolars: Max vs. Man

A

Cusp size:

Maxillary: two cusps are approx equal size

Mandibular: buccal cusp > lingual cusp

Central groove

Maxillary: centered buccolingually

Mandibular: slightly to the lingual

18
Q

PM Occlusal Outline

A

Occlusal Outline

Mandibular PM1: diamond shaped

Mandibular PM2: square

Maxillary premolars: rectangular (long buccolingually)

19
Q

Max PM1 vs PM2

A

Maxillary Roots:Max PM1: 2 roots

Any separation of root

Max PM2: 1 root

20
Q

Maxillary R vs. L

A

From incisal view Lingual cusp tip offset to mesial

THESE ARE THE ONLY TEETH THAT OFFSET TO MESIAL

Mesial to the rightà it’s a right

Mesial offset of lingual cusp can be viewed from lingual view

Mesial ridge of Lingual cusp is shorter than distal ridge.

21
Q

Mandibular PM1 vs PM2

A

PM1: 2 cusps

Lingual cusp is very small

PM2: 3 cusps

1 buccal and two lingual

Mesiolingual cusp is largest of the two lingual cusps

Distolingual cusp may be indistinct

22
Q

Mandibular PM1 right vs. left

___ ___ ___
___ ____

____ ___ ____

___ degree ___ __ ___

___ ___ on ____

  • Bulk to ___

___ ___ is ___ ___ but some specimens do not have it

A

Small lingual ridge

Transverse ridge

Mesiolingual developmental groove

45 degree mesial marginal ridge

Heavy taper on mesiolingual

Bulk to distal

Mesiolingual notch is normally present but some specimens do not have it

23
Q

Molars

M1 vs M2

A

M1: 5 cusps

  • Maxillary: Cusp of Carabelli
    • On the lingual of the mesiolingual cusp
  • Mandibular: distal cusp (smallest)
    • On the buccal

M2: 4 cusps

24
Q

Molars

Maxillary vs. Mandibular

Incisal View:

Roots:

A

Incisal view

Maxillary are wider buccolingually

Mandibular are wider mesiodistally

Roots

Maxillary: 3 roots

Mandibular: 2 roots

25
Q

Molars R vs. L

Maxillary:

____ ___ ___

___ ____ ___

Mandibular M1: ___ ___

A

R vs. L

Maxillary:

Largestà mesiolingual cusp

Smallestàdistolingual cusp

Mandibular M1: distal cusp

26
Q

Maxillary Molars

A

Maxillary molars

Oblique ridge connects distobuccal cusp and mesiolingual cusp

27
Q

Mandibular Molars M1 vs. M2

Transverse ridges:

M2:

  • Cusps:
  • Occlusal view:
    • _____
    • _____
A

Transverse ridges:

M1: no transverse ridges

M2: 2 transverse ridges

M2:4 cusps of about equal size

Mesiobuccal is largest of 4 cusps

Occlusal view:

Mesial to distal taper

Widest at mesio and narrows in buccolingual dimension twds the distal

Buccal ridge of distobuccal cusp is fairly vertical

Buccal ridge of mesiobuccal cusp tilts lingually

Easier to see down buccal on mesiobuccal cusp

Dental Anatomy (15 decks)

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