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Dental Morphology > Lecture 5 Maxillary Canines > Flashcards

Lecture 5 Maxillary Canines Flashcards

1
Q

Describe the cusp of the maxillary canine

A

single and pointed

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2
Q

what is the function of the maxillary canine

A

to tear, pierce and hold food
-supports facial musculature

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3
Q

what do the maxillary canines form in the arch

A

the cornerstone

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4
Q

what separates the maxillary canine root from the rest

A

has the longest and thicket root (FL) of all the teeth

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5
Q

what is the canine eminence

A

prominent ridge of bone on the labial aspect

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6
Q

what would happen if you lost a canine

A

change of shape of face in this area

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7
Q

what is the function of the canine as a guiding tooth

A

the mandibular canine slides along the lingual surface of the maxillary canine and guides the mandible

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8
Q

what are the long roots of the canine good for

A

anchor and support for prostheses

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9
Q

what are the numbers of the maxillary canine

A

6 and 11

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10
Q

when do maxillary canine erupt

A

11-12 years of age

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11
Q

how many lobes do the maxillary canine develop from and what are they

A

4 lobes
-3 labial lobes: mesial, middle, distal
-1 lingual- develops into cingulum

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12
Q

which lobe of the maxillary canine shows the greatest development

A

middle labial lobe

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13
Q

which canine is larger

A

maxillary

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14
Q

what is a cusp

A

elevation on the crown of the tooth made up of 4 ridges

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15
Q

what are the cusps of the maxillary canine

A

mesial cusp ridge, distal cusp ridge, facial cusp ridge, lingual cusp ridge

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16
Q

what is the geometric form of the maxillary canine

A

a trapezoid (not including the cusp tip)

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17
Q

what is the cusp tip of the maxillary canine in line with

A

the center of the root

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18
Q

how big is the incisal margin of the maxillary canine

A

1/3 of total crown length

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19
Q

describe the mesial cusp ridge compared to the distal cusp ridge from the facial view of the maxillary canine

A

the mesial cusp ridge is shorter and less slopes than the distal cusp ridge

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20
Q

describe the difference between the mesioincisal angle compared to the distoincisal angle from the facial view of the maxillary canine

A

the mesioincisal angle is more incisal than the distoincisal

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21
Q

describe the cervical line from the facial aspect of the maxillary canine

A

curves apically

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22
Q

where is the mesial contact of the maxillary canine loacted

A

at the junction of the middle and the incisal third

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23
Q

describe the mesial profile of the maxillary canine from the facial view

A

slightly convex, but can be slightly concave cervical to contact area

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24
Q

where is the distal contact of the maxillary canine

A

in the middle third

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25
Q

describe the distal profile of the maxillary canine from the facial view

A

more convex, more rounded distoincisal angle
-concave from contact to the cervical line

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26
Q

what are the MF and DF depressions of the maxillary canine

A

shallow depressions where the 3 labial lobes join

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27
Q

what does the facial ridge of the maxillary canine develop from

A

the middle labial lobe

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28
Q

describe the mesial to facial ridge of the maxillary canine

A

convex

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29
Q

describe the distal to facial ridge of the maxillary canine

A

tendency to form concavity in cervical third

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30
Q

describe the root of the maxillary canine from the facial aspect

A

conical, long and narrow, bluntly pointed apex that curves mesially or distally (mostly distally) in apical third, convex on labial aspect

31
Q

describe the linguial view of the maxillary canine

A

-crown and root are narrower
- CEJ has greater curvature
-distinct mesial and distal marginal ridges
-prominent convex cingulum

32
Q

where is the lingual ridge of the maxillary canine

A

ridge from cusp tip that blends into incisal portion of the cingulum

33
Q

what is between the lingual and marginal ridges of the maxillary canine

A

mesiolingual and distolingual fossa

34
Q

what aspects of the root of the maxillary canine are visible from the lingual view

A

-mesial and distal aspect
- developmental depressions on the mesial and distal aspect

35
Q

describe the shape of the crown of the maxillary canine from the mesial view

A

triangular or wedge shaped

36
Q

where does the cusp tip of the maxillary canine lie in relation to the line bisecting root

A

labial

37
Q

describe the labial outline of the maxillary canine from the mesial view

A

slightly convex and the height of contour is in the cervical third

38
Q

describe the lingual outline of the maxillary canine from the mesial view

A

convex in the cingulum area, slightly concave in incisal portion
-lingual height of contour is in the cervical third
-cervical line curves toward the incisal edge

39
Q

describe the root of the maxillary canine from the mesial view

A

conical
- very broad labiolingually from cervical line to 1//2-2/3 length
-mesial developmental depression
-tapered apex

40
Q

how is the distal view of the maxillary canine different from the mesial view

A

-definite concavity between the contact and cervical line
-cervical line is flatter but curves toward incisal edge
- dista marginaly ridge is heavier and more irregular in outline
-developmental depression on root is more pronounced

41
Q

which dimension of the maxillary canine is greater: labiolingually or mesiodistally

A

labiolingually > mesiodistally

42
Q

where are the. mesial and distal contact areas of the maxillary canine from the incisal view

A

they are centered faciolingually

43
Q

where is the cusp tip of the maxillary canine located from the incisal view

A

labial to the center of crown

44
Q

describe the difference in outline of the maxillary canine of the mesial half and the distal half of the facial profile from the incisal view

A

the mesial half is convex and the distal half is concave

45
Q

describe the ridges of the maxillary canine facially and lingually from the incisal view

A
  • prominent facial ridge
    -prominent lingual ridge, distolingual and mesiolingual fossae
46
Q

what is the broadest (FL) single rooted tooth

A

maxillary canine

47
Q

what is the longest tooth in the arch

A

maxillary canine

48
Q

describe the pulp horn shape and number of the maxillary canine

A

oval in cervical and middle third, round in shape is apical third
- mesial and distal root concavities- distal is more pronounced
- 1 pulp horn

49
Q

what are the numbers of the mandibular canines

A

27 and 22

50
Q

when do mandibular canines erupt

A

9-10 years (before the maxillary)

51
Q

what are the 4 lobes in the mandibular canines

A

-3 labial
-1 lingual

52
Q

what is the difference between the mandibular canines and maxillary canine MD and cingulum

A

the mandibular canines is narrower MD and cingulum is not as well developed in mandibular canines

53
Q

what is the difference between mandibular canines and the maxillary canine ridges

A

mesial and distal marginal ridges are not as prominent

54
Q

describe the cusp height compared to the entire crown of the mandibular canines

A

cusp height is 1/5 height of crown

55
Q

compare the crown length incisogingivally compared to maxillary canine

A

crown in as longer or longer in mandibular

56
Q

describe the difference between mesial cusp arm and distal cusp arm in the mandibular canines

A

mesial cusp arm is shorter than the distal cusp arm

57
Q

describe the mesial outline from crown to root from the facial view of the mandibular canines

A

outline is straight and in line with mesial outline of the root

58
Q

where is the mesial contact of the mandibular canines

A

incisal third

59
Q

describe the distal outline of the mandibular canines from the facial view

A

distal outline is convex and overhangs the root
-crown appears bent distally on the root
- distal contact is in the middle 1/3

60
Q

describe the root features of the mandibular canines from the facial view

A

-root is shorter by 1-2 mm compared to maxillary canine
- root curvature if present is to mesial

61
Q

describe the cingulum, marginal ridges, fossas of mandibular canines from lingual view

A

cingulum is poorly developed
- ridges and fossa are less developed

62
Q

describe the cervical third, incisal portion, and labial aspect of the mandibular canines from the mesial view

A

-cervical third is narrower than maxillary canine
-incisal portion is thinner than maxillary canine
-labial is less curved than maxillary canine

63
Q

where are the labial and lingual height of contour from the mesial view of the mandibular canines

A

in the cervical 1/3

64
Q

describe the lingual outline of the mandibular canines from the mesial view

A

more concave due to less prominent cingulum

65
Q

where does the cusp tip of the mandibular canines lie in relation to the line bisecting the root

A

cusp tip is lingual to the line bisecting the toor

66
Q

are there developmental depressions on the root of the mandibular canines from the mesial view

A

yes

67
Q

what are the differences between the distal view and the mesial view of the mandibular canines

A

-curvature of CEJ is not as steep on distal
- developmental depression on the root of distal is more pronounced

68
Q

describe the labial outline of the mandibular canines from the incisal view

A

less convex than maxillary and facial ridge is less developed
- mesial and distal marginal ridges are less developed than the maxillary canine

69
Q

where does the cusp tip of the mandibular canines lie from the incisal view

A

slightly lingual

70
Q

where is the mesial cusp arm from the incisal view of the mandibular canines

A

inclined slightly lingual

71
Q

describe the root and pulp of the mandibular canines

A

single root often curved to the mesial, canal and root are wide labiolingually
- 2 canals 20% of the time
-deep distal developmental depression

72
Q

what anterior tooth is most likely to have a bifurcated root

A

mandibular canine

73
Q

what tooth is the often the last remaining tooth in an arch

A

canines

Dental Morphology (12 decks)

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