Best Rate (Guwahati ) Call Girls Guwahati ⟟ 8617370543 ⟟ High Class Call Girl...
PERMANENT MAXILLARY CANINE
1. Dr. Ramil B. Simsuangco
Oral Anatomy Professor
College of Dentistry
Manila Central University
2. Permanent Canines
Develops from 4 lobes, 3 labial and 1 lingual
Middle labial lobe well developed into a cusp
Cornerstone of the mouth
Otherwise know as fangs, eye-tooth and
cuspids
Longest tooth in the mouth
Canine eminence- bony ridge over the labial
surface of roots, has a cosmetic value helps
form a foundation that ensures normal facial
expression at the corners of the mouth.
Has cusp on its incisal ridge
3. Crown is trapezoidal
CEJ is convex towards the root
Mesial Outline: convex from cervix
to the center of MCA or slightly
concavity above CA
Distal Outline: usually concave
between CEJ and DCA
Contact Areas:
Mesial- junction of middle and insisal 3rd
Distal- center of middle 3rd
4. Cusp tip is in line with the center of the
root (RAL)
Mesial cusp slope shorter than distal cusp
slope
Cusp slopes shows tendency toward
concavity(notch) before wear has taken.
Middle labial lobe shows greater
development and produces a ridge on the
labial surface (labial ridge)
Root appears slender, conical in form with a
blunt apex, root may curve mesially or
distally
5. Crown is trapezoidal
Crown and root narrower lingually than labially
CEJ shows a more even curvature, maybe
straight for a short interval
Cingulum is large and sometimes pointed like a
small cusp
Strongly developed marginal ridges,
occasionally a well-developed lingual rige at the
center with two shallow concavities namely;
Mesial and Distal lingual fossa
Root narrower than labial, mesial and distal
surface of root is visible lingually
Developmental depressions M and D may be
seen
6. Crown is triangular
Shows greater labiolingual
measurement(cervical 3rd) than any of the
anterior teeth
Labial outline exhibits more convexity
Root outline is conical, tapered or blunt pointed
apex, may curve labially
Labial outline of root maybe almost
perpendicular with most of the taper on the
lingual side.
A line bisecting the cusp is labial to a line
bisecting the root
7. CEJ curves approximately 2.5 mm
incisally
Mesial surface of root appears broad
with shallow developmental
depression that help to anchor the
teeth in the alveoli and help prevent
rotation and displacement.
8. Same as mesial except the
following:
- Less curvature of CEJ (approx. 1
mm)
- Contact area is broader
- Distal marginal ridge is heavier
- More irregular in outline
- More concave surface
- More pronounced root
developmental depression
9. Labiolingual dimension is greater than
mesiodistal diameter
Tip of cusp is labial to center of crown
labiolingually and mesial to the center
mesiodistally
When cut cross-sectionally, mesial
section, shows greater labiolingual bulk,
crown gives impression of having all the
distal portion stretched to contact first
premolar.
Line bisecting cusp and cusps ridges in
the MD direction is almost always
straight
Distal slope is longer than mesial slope