20-11-2023
GOOD MORNING EVERYONE
PERMANENT
CANINES
DR. S. Soundarya MDS MSc(LONDON)
Associate Professor
Department Of Oral & Maxillofacial Pathology
Best Dental Science College & Hospital
Reference: Wheeler's Dental Anatomy 9th &
10th edition 1
20-11-2023
CANINES
• The four canines are placed at the four corners of the mouth
• Cornerstones of the dentasl arches
• Longest teeth
• Crown length – similar to maxillary central incisor
• Root length – longer than any othe rtooth.
• Single pointed cusps, their locations in the mouth, and the extra anchorage
furnished by the long, strongly developed roots, makes these canines resemble
those of the carnivore.
CANINES
Reference: Wheeler's Dental Anatomy 9th &
10th edition 2
20-11-2023
CANINES
• The shape and position of the canines contribute to the guidance of the teeth into
the intercuspal position by “canine guidance.”
• The crown portions of the canines are shaped in a manner that promotes
cleanliness.
• This self-cleansing quality, along with the efficient anchorage in the jaws, tends to
preserve these teeth throughout life.
• Very valuable teeth, when considered either as units of the natural dental arches or
as possible assistants in stabilizing replacements of lost teeth in prosthetic
procedures.
• The positions and forms of these teeth and their anchorage in the bone, along with
the bone ridge over the labial portions of the roots, called the canine eminence,
have a cosmetic value.
MAXILLARY
CANINE
• The outline of the labial or
lingual aspect of the maxillary
canine is a series of curves or
arcs except for the angle made
by the tip of the cusp.
• This cusp has a mesial incisal
ridge and a distal incisal ridge.
Reference: Wheeler's Dental Anatomy 9th &
10th edition 3
20-11-2023
MAXILLARY CANINE
• The mesial half of the crown contacts with the lateral incisor, and
the distal half contacts the first premolar.
• Contact areas of the maxillary canine are at different levels
cervicoincisally.
• From a labial view, the mesial half of the crown resembles a portion of
an incisor, whereas the distal half resembles a portion of a
premolar.
• The labiolingual measurement of the crown is about 1 mm greater than
that of the maxillary central incisor.
• The mesiodistal measurement is approximately 1 mm less
DETAILED DESCRIPTION
OF PERMANENT
MAXILLARY CANINE
MORPHOLOGY
Reference: Wheeler's Dental Anatomy 9th &
10th edition 4
20-11-2023
LABIAL ASPECT
• The crown and root are narrower
mesiodistally than those of the maxillary
central incisor.
• The cervical line labially is convex, with the
convexity towards the root portion.
• Mesially, the outline of the crown may be
convex from the cervix to the center of
the mesial contact area, or the crown may
exhibit a slight concavity above the contact
area from the labial aspect.
• The center of the contact area mesially is
approximately at the junction of middle
and incisal thirds of the crown
LABIAL ASPECT
Distally, the outline of the
crown is usually concave
between the cervical line and
the distal contact area.
The distal contact area is
usually at the center of the
middle third of the crown.
10
Reference: Wheeler's Dental Anatomy 9th &
10th edition 5
20-11-2023
LABIAL ASPECT
• The two levels
of contact areas
mesially and
distally should
be noted
11
LABIAL ASPECT
• Unless the crown has been worn
unevenly, the cusp tip is on a line with
the center of the root.
• The cusp has a mesial slope and a
distal slope, the mesial slope being
the shorter of the two.
12
Reference: Wheeler's Dental Anatomy 9th &
10th edition 6
20-11-2023
LABIAL ASPECT
• The labial surface - crown - smooth, with no developmental
lines of note except shallow depressions mesially and distally,
dividing the three labial lobes.
• The middle labial lobe shows much greater development than
the other lobes.
• A ridge on the labial surface of the crown.
• A line drawn over the crest of this ridge, from the cervical
line to the tip of the cusp, is a curved one inclined mesially at
its center.
• All areas mesial to the crest of this ridge exhibit convexity.
• Distally to the labial ridge a tendency exists toward concavity
at the cervical third of the crown, although convexity is noted
elsewhere in all areas approaching the labial ridge.
13
LABIAL ASPECT
• The root of the maxillary canine appears
slender from the labial aspect when
compared with the bulk of the crown; it is
conical in form with a bluntly pointed apex.
• It is not uncommon for this root to have a
sharp curve in the vicinity of the apical
third.
• This curvature may be in a mesial or distal
direction, but in most instances is the
latter. The labial surface of the root is
smooth and convex at all points.
14
Reference: Wheeler's Dental Anatomy 9th &
10th edition 7
20-11-2023
LINGUAL ASPECT
• The crown and root are
narrower lingually than labially.
• The cervical line from the
lingual aspect differs somewhat
from the curvature found
labially and shows a more even
curvature.
• The line may be straight for a
short interval at this point
15
LINGUAL ASPECT…
• Large cingulum, in some instances,
is pointed like a small cusp.
• Definite ridges are found on the
lingual surface of the crown below
the cingulum and between
strongly developed marginal
ridges.
• Although depressions are to be
found between these ridge forms,
seldom are any deep
developmental grooves present.
16
Reference: Wheeler's Dental Anatomy 9th &
10th edition 8
20-11-2023
LINGUAL ASPECT…
• Occasionally, a well-developed lingual
ridge is seen that is confluent with the
cusp tip; this extends to a point near
the cingulum.
• Shallow concavities are evident
between this ridge and the marginal
ridges.
• When these concavities are present,
they are called mesial and distal lingual
fossae
17
LINGUAL ASPECT…
• The lingual portion of the root of the
maxillary canine is narrower than the
labial portion.
• Because of this formation, much of the
mesial and distal surface of the root is
visible from the lingual aspect.
• Developmental depressions mesially
and distally may be seen on most of
these roots, extending most of the
root length.
• The lingual ridge of the root is rather
narrow, but it is smooth and convex at all
points from the cervical line to the apical
end
18
Reference: Wheeler's Dental Anatomy 9th &
10th edition 9
20-11-2023
MESIAL ASPECT
• Presents the outline of
the functional form of an
anterior tooth.
• However, it generally
shows greater bulk and
greater labiolingual
measurement than any of
the other anterior teeth
19
MESIAL ASPECT
• The crown is wedge-
shaped, the greatest
measurement being at
the cervical third and
the wedge point being
represented by the tip
of the cusp.
20
Reference: Wheeler's Dental Anatomy 9th &
10th edition 10
20-11-2023
MESIAL ASPECT
• The curvature of the crown below the cervical
line labially and lingually corresponds in extent
to the curvature of the maxillary central and
lateral incisors.
• Nevertheless, the crest of that curvature is
found at a level more incisal, because the middle
labial and the lingual lobes are more highly
developed.
• Many canines show a flattened area labially at
the cervical third of the crown, which appears
as a straight outline from the mesial aspect.
21
MESIAL ASPECT
• Below the cervical third of the
crown, the labial face may be
presented by a line only slightly
convex from the crest of curvature
at the cervical third to the tip of
the cusp.
• The line usually becomes straighter
as it approaches the cusp.
22
Reference: Wheeler's Dental Anatomy 9th &
10th edition 11
20-11-2023
MESIAL ASPECT
• The entire labial outline from the
mesial aspect exhibits more convexity
from the cervical line to the cusp tip
than the maxillary central incisor does
from cervix to incisal edge.
• The lingual outline of the crown from
the mesial aspect may be represented
by a convex line describing the
cingulum, which convexity straightens
out as the middle third is reached,
becoming convex again in the incisal
third.
23
MESIAL ASPECT
• The cervical line that outlines the
base of the crown from this aspect
curves toward the cusp on average
by approximately 2.5 mm at the
cementoenamel junction.
• The outline of the root from this
aspect is conical, with a tapered or
bluntly pointed apex.
24
Reference: Wheeler's Dental Anatomy 9th &
10th edition 12
20-11-2023
MESIAL ASPECT
• The position of the tip of the
cusp in relation to the long axis
of the root is different from
that of the maxillary central
and lateral incisors.
• A line bisecting the cusp is
labial to a line bisecting the
root.
25
MESIAL ASPECT
• The mesial surface of the canine crown
presents convexities at all points except
for a small, circumscribed area above the
contact area, where the surface is
concave and flat between that area and
the cervical line.
• The mesial surface of the root appears
broad, with a shallow developmental
depression for part of the root length.
• Developmental depressions on the heavy
roots help anchor the teeth in the
alveoli and help prevent rotation and
displacement
26
Reference: Wheeler's Dental Anatomy 9th &
10th edition 13
20-11-2023
DISTAL ASPECT
• The distal aspect of the maxillary
canine shows somewhat the
same form as the mesial aspect,
with the following variations: the
cervical line exhibits less
curvature toward the cusp ridge;
the distal marginal ridge is
heavier and more irregular in
outline; the surface displays more
concavity, usually above the
contact area; and the
developmental depression on the
distal side of the root is more
pronounced
27
INCISAL ASPECT
• the labiolingual dimension is
greater than the mesiodistal.
• if the tooth is correctly posed
so that the long axis of the
root is directly in the line of
vision, the tip of the cusp is
labial to the center of the
crown labiolingually and mesial
to the center mesiodistally.
28
Reference: Wheeler's Dental Anatomy 9th &
10th edition 14
20-11-2023
INCISAL ASPECT
• the mesial section shows a crown
portion with greater labiolingual
bulk.
• The entire distal portion
stretched to make contact with the
first premolar.
• The ridge of the middle labial
lobe is very noticeable labially from
the incisal aspect.
• It attains its greatest convexity at the
cervical third of the crown, becoming
broader and flatter at the middle and
incisal thirds.
29
INCISAL ASPECT
• The cingulum development
makes up the cervical third of
the crown lingually.
• A shorter arc than the one labially
from this aspect may describe the
outline of the cingulum.
• This comparison coincides with
the relative mesiodistal
dimensions of the root lingually
and labially.
30
Reference: Wheeler's Dental Anatomy 9th &
10th edition 15
20-11-2023
31
32
Reference: Wheeler's Dental Anatomy 9th &
10th edition 16
20-11-2023
PERMANENT
MAXILLARY
RIGHT
CANINE
33
PERMANENT
MAXILLARY
RIGHT
CANINE
34
Reference: Wheeler's Dental Anatomy 9th &
10th edition 17
20-11-2023
35
THANK
YOU
36
Reference: Wheeler's Dental Anatomy 9th &
10th edition 18
