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Dental Anatomy > Mandibular Canine > Flashcards

Mandibular Canine Flashcards

1
Q

First Calcification

A

4-5 Months

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2
Q

Enamel Completion

A

6-7 years

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3
Q

Eruption

A

9-10 years

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4
Q

root completion

A

12-14 years

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5
Q

Measurements

A

The facial-lingual width is larger than the mesial distal crown width

Root length is 16.0mm and has 1 cusp!

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6
Q

You draw a bisecting line from apex of the root down towards the cusp tip, where is the cusp tip in regards?

A

Cusp tip is lingual to bisecting line

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7
Q

Pulp Canals

A

94% of the time there is 1 canal but 6 % of the time there is 2 canals and 2 Forman

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8
Q

Root Curvatures

A

Usually straight, but if it would have to curve, it would curve towards the MESIAL!

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9
Q

What’s a common anomaly?

A

BIFURCATED ROOTS

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10
Q

Mandibular Canine vs Maxillary Canine

A

Mandibular canine crown is usually narrower mesiodistally than maxillary canine

Mandibular canine crown is as long as and frequently longer than that of the maxillary canine

The root of the mandibular canine may be as long or slightly shorter than the maxillary canine

CROWN GROWS IN LENGTH, ROOT LOSES LENGTH

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11
Q

Mandibular Canine vs Maxillary Canine

A

Labiolingual diameter of the crown and root of mandibular is slightly less than that of maxillary

Lingual surface is smoother, with less cingulum development and less bulk to the marginal ridges.

The cusp of the mandibular canine is not as well developed than that of maxillary

Cusp ridges are thinner labiolingually

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12
Q

Labial View

A

Mesiodistal dimensions are smaller than maxillary canine

Crown appears to be longer and narrower

Broader mesiodistally than any mandibular incisor

Labial ridge is not as prominent as it is on maxillary canine

Generally convex but the depressions mesial and distal to labial ridge

Mesial outline is flat, nearly in line with root

Cusp tip is on a line bisecting the root.

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13
Q

Mesial Cusp Ridge compared to distal cusp ridge?

A

It is shorter

Many mandibular canines give the impression of being bent distally on the root base while maxillary canine crowns are more likely to be in line with the root.

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14
Q

Is the distal side more concave or convex in the cervical third?

A

The distal side is more concave in the cervical third but more convex in the middle and incisal thirds.

  • This along with more flat mesial surface makes the crown appear bent towards the distal.
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15
Q

Mesial

A

Incisal Third

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16
Q

Distal

A

Junction of the incisal and middle thirds

17
Q

Angle of cusp tip

A

The angle formed by joining of mesial cusp ridge and distal cusp ridge is more obtuse than the maxillary canine, means it is greater than 105

18
Q

Lingual Aspect

A

Crown and Root both exhibit a lingual taper!

Lingual ridge and fossa are not prominent until towards the cusp tip there is definition

Cingulum is less bulky and slightly displaced distally.

19
Q

Lingual Aspect

A

Marginal Ridges are not as prominent

Lingual surface is much smoother and flatter than that of maxillary canines- resembling mandibular incisors

Root is narrower here than on the labial surface. Around half as wide.

20
Q

Mesial Aspect

A

WEDGE SHAPED CROWN

Labial Outline: Less curvature to the labial outline of crown than the maxillary canine

Very little curvature of CEJ

Lingual:

Same form of maxillary canine
less pronounced cingulum

Root is similar in shape to maxillary canine but apex is sharper.

21
Q

Mesial Aspect

A

Incisal third is thinner labiolingually than maxillary. Making the tooth appear pointed.

Cusp tip is on or slightly lingual to the bisecting line

Curvature of CEj is greater on mesial than on distal and is greater than that of maxillary canine

Height of contour in the cervical third on facial and lingual.

22
Q

Incisal Aspect

A

The oblong shape F-L > M-D

Mesial portion of labial surface is more convex and distal is flat.

Lingual taper is prevalent

Cusp tip is either lingual to or centered faciolingually

Cingulum is either centered on or displaced distally

Distoloingual twist is visible like that of the mandibular lateral.

23
Q

Mandibular Canine Root

A

The root is convex and tapers to blunt apex

Most often straight

Some possibility of a mesial curvature at the apex, less frequently a distal curvature.

ROOT curvature should not be used to differentiate R or L on mandibular canines!

24
Q

Root Anat

A

Longitudinal Root depressions on both the mesial and distal sides, distal more prevalent- not as deep as the maxillary canine!

Some division of two canals is possible, two canals always present with bifurcated roots!

Dental Anatomy (17 decks)

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