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Morphology > Canines > Flashcards

Canines Flashcards

1
Q

other names for canines

A

cuspids or eye teeth

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2
Q

general characteristics of canines

A

single pointed cusp
the “cornerstone” of the arch
important teeth for esthetic and functional aspect

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3
Q

canines #

A

6, 11, 27, 22

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4
Q

what is different about roots of canine

A

have the longest and thickest roots faciolingually of all teeth

very stable

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5
Q

canine eminence=

and what does it do

A

prominent ridge of bone on the labial aspect

-helps support facial musculature

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6
Q

Function of mandibular canines

A
  • guiding teeth: they slide along lingual surface of maxillary and guides the mandible
  • long roots: good for anchoring
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7
Q

of maxillary canines

A

6 and 11

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8
Q

when do maxillary canines erupt

A

11-12 years

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9
Q

how many developmental lobes do maxillary canines have

A

4 lobes

3 are labial, 1 develops into cingulum

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10
Q

what are the three labial lobes of maxillary canines

A

mesial, middle and distal

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11
Q

how to the size of maxillary and mandible canines compare?

A

maxillary canine is larger than the mandible canine

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12
Q

cusp in maxillary canines

A

is made up of 4 ridges

mesial, distal, facial and lingual cusp ridge

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13
Q

maxillary canine facial view

A
  • the outline is 5 sided figure
  • mesial and distal sides are above the contact, cervical line, and mesial and distal cusp arm
  • cusp tip in line with the center
  • incisal margin is 1/3 of size
  • mesial cusp ridge is shorter and less sloped than distal cusp ridge
  • distal outlive is concave from contact to cervical line
  • has a prominent facial ridge
  • mesial to facial: convex
  • distal to facial: slight concave
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14
Q

what is the geometric form of maxillary canines

A

trapezoidal, not 5 sided because cusp tip is not included

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15
Q

what is the different between maxillary canines mesial and distal cusp ridges

A

mesial: shorter, less sloped
distal: distoincisal angle is greater

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16
Q

contacts on facial view of maxillary canines

A

mesial contact: junction of middle and incisal 1/3

distal contact: in the middle 1/3

17
Q

maxillary canines root

A
  • conical
  • long and narrow MD
  • apex curves apically
  • convex on labial aspect
  • looks more narrow
  • can see developmental depressions on mesial and distal
  • looks broad labioligually
18
Q

maxillary canines lingual

A
  • crown and root are narrower
  • CEJ has greater curvature here
  • distinct mesial and distal marginal ridges
  • prominent convex cingulum
  • mesiolingual and distolingual fossa
  • lingual ridge blends into the incisal portion of cingulum from cusp tip
19
Q

what teeth can we see mesial and distal developmental depressions on the root?

A

maxillary canines and mandibular incisors

20
Q

maxillary canines mesial view

A

outline: triangular
- very wide faciolingually in cervical third
- cusp tip is labial to bisecting line
- labial: slightly convex,
- lingual: convex in cingulum, concave in incisal portion
- height of contours for both is in the cervical third

21
Q

maxillary canines distal view

A

very similar to mesial BUT

  • has concavity between the contact and cervical line
  • looks bigger on distal
  • developmental depression is more pronounced on root
22
Q

maxillary canines incisal view

A
  • labiolingual dimension > mesiodistal dimension
  • contacts are centered
  • cusp tip is labial to the center of the crown
  • mesial half: convex
  • distal half: concave
  • can see depression on labial from incisal
  • prominent labial ridge, can see distolingual and mesiolingual fossae
23
Q

maxillary canines distinct characteristics

A
  • the longest tooth in the arch

- broadest FL single rooted tooth

24
Q

maxillary canine pulp

A
  • 1 pulp horn
  • mesial and distal root concavities: distal more pronounced
  • round in shape in apical thirds
  • oval in cervical and middle thirds
25
Q

mandibular canines #

A

27, 22

26
Q

mandibular canines erupt at what age

A

9 - 10 years

27
Q

how many developmental lobes for mandibular canines

A

4 lobes, 3 labial and 1 lingual

lingual –> cingulum

28
Q

mandibular canines general characteristics

A
  • single cusp
  • narrower MD than maxillary
  • cingulum is not as well developed as maxillary
  • M and D marginal ridges are not as prominent
  • cusp is about 1/5 of size of crown (mandible it was like 1/3)
  • as long or longer as maxillary canine
29
Q

mandibular canines facial view

A
  • mesial cusp arm is shorter than distal cusp arm
  • mesial outline is straight
  • distal outline is convex and overhangs the root
30
Q

contacts of mandibular canines

A

mesial: incisal third
distal: in the middle third

31
Q

mandibular canines root

A
  • looks bent distally from facial view
  • shorter than maxillary by 1-2mm
  • single root curved mesial
  • canal and root wide labiolingually
32
Q

mandibular canines lingual view

A
  • flat and smooth
  • poorly developed cingulum
  • less developed mesial and distal marginal ridges and fossas
33
Q

mandibular canines mesial view

A
  • cervical third is narrower than maxillary
  • incisal portion is thinner than maxillary
  • labial is less curved than maxillary
  • labial and lingual heights of contour are in cervical third
  • lingual outline is more concave
  • prominent developmental depression on root
  • cusp tip is lingual to line bisecting root
34
Q

mandibular canines distal view

A

not as steep of CEJ compared to mesial

developmental depression on the root is more pronouced

35
Q

mandibular canines incisal view

A
  • facial, mesial and distal ridges are less developed

- cusp lip is lingual

36
Q

mandibular canines pulp

A
  • wide labiolingually
  • 2 canals 20% of time
  • deep distal developmental depressions
  • cross section looks ovall
37
Q

mandibular canines interesting fact

A

are the most anterior tooth most likely to have a bifurcated root

Morphology (5 decks)

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