PERMANENT CANINES PERMANENT CANINES 4 in no found

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PERMANENT CANINES

PERMANENT CANINES

PERMANENT CANINES • *4 in no , found at the corner of the mouth

PERMANENT CANINES • *4 in no , found at the corner of the mouth * Important for facial appearance and expression • *Longest tooth in the arch with single long root •

 • *Least prone to caries and last tooth to go • *Shape promotes

• *Least prone to caries and last tooth to go • *Shape promotes self cleansing activity • *Important from cosmetic point of view • *Long root makes them ideal as abutment

Nomenclature UNIVERSAL 1 2 3 4 5 6 7 8 9 10 11 12

Nomenclature UNIVERSAL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 n n FDI 13 23 n PALMER 3 3

MAX PERMANENT CANINE-LABIAL ASPECT n n n The surface is Smooth & convex and

MAX PERMANENT CANINE-LABIAL ASPECT n n n The surface is Smooth & convex and consists of a single cusp Developmentally 3 lobes seen, middle lobe gives rise to labial ridge Shallow dev depressions seen on labial surface

n n Cervical line convexity towards root Single cusp with a shorter mesial slope

n n Cervical line convexity towards root Single cusp with a shorter mesial slope and a longer distal slope n Long root ending in a blunt apex n Labial surface of root is smooth and convex

Labial ridge Distal slope Mesial slope

Labial ridge Distal slope Mesial slope

Labial aspect Crown n Shape: The crown is narrower by 1 mm than Central

Labial aspect Crown n Shape: The crown is narrower by 1 mm than Central incisors Outlines n Mesial outline may be convex, with contact area is located at the junction of middle and incisal 1/3 rd. n Distal outline is concave n Contact area more cervically located compared to the mesial contact area and is at the middle of middle 1/3 rd.

Labial aspect n n n Cervical outline is curved in an apical direction. Incisal

Labial aspect n n n Cervical outline is curved in an apical direction. Incisal outline is represented by the cusp and cusp slopes. Mesial slope and distal slope meeting at an angle to form a point called cusp.

n n Distal slope of the cusp is longer than mesial cusp slope. Cusp

n n Distal slope of the cusp is longer than mesial cusp slope. Cusp tip is in line with root axis line and it is more mesially placed.

Labial aspect n n n Labial surface – Labial surface is convex. The middle

Labial aspect n n n Labial surface – Labial surface is convex. The middle labial lobe is well developed forming a prominent labial ridge running cervico-incisally up to the cusp.

n n n On either side of labial ridge shallow depressions are seen Root

n n n On either side of labial ridge shallow depressions are seen Root – Maxillary canines have the longest root. Root is slender and conical with bluntly pointed apex which bends distally

MAX PERMANENT CANINE-LINGUAL ASPECT n Crown tapers towards lingual side n Well developed cingulum

MAX PERMANENT CANINE-LINGUAL ASPECT n Crown tapers towards lingual side n Well developed cingulum n Lingual ridge at centre n Mesial and distal marginal ridges well developed giving rise to mesiolingual and distolingual fossa

n n Root long and conical and tapers towards lingual side Mesial and distal

n n Root long and conical and tapers towards lingual side Mesial and distal surfaces of root can be seen from lingual aspect

Lingual aspect Crown n The crown outline on the lingual side is similar to

Lingual aspect Crown n The crown outline on the lingual side is similar to labial aspect. n Canines show a significant lingual tapering because of which both crown and root are narrower lingually. n As in other anterior teeth, lingual aspect of canines also shows convexity and concavities

Lingual aspect Convexities: n The cingulum is seen as a convexity at cervical 1/3

Lingual aspect Convexities: n The cingulum is seen as a convexity at cervical 1/3 rd and is very prominent resembling a cusp. n n Mesial and distal sides are bordered by linear elevations called marginal ridges. Both the mesial and distal marginal ridges are prominent

n n Distal marginal ridge being more elevated than the mesial marginal ridge. lingual

n n Distal marginal ridge being more elevated than the mesial marginal ridge. lingual ridge running in a cervico-incisal direction from cingulum to the cusp tip.

Lingual aspect n n n Concavities: The lingual aspect of canines show a concavity

Lingual aspect n n n Concavities: The lingual aspect of canines show a concavity called lingual fossa which is more pronounced than those of other anterior teeth. The lingual fossa is divided in to mesial and distal lingual fossae by the lingual ridge. Root n It is narrow lingually and much of mesial and distal surfaces are seen from this aspect.

cingulum Mesial marginal ridge Distal marginal ridge Lingual ridge

cingulum Mesial marginal ridge Distal marginal ridge Lingual ridge

Distolingual fossa Mesiolingual fossa

Distolingual fossa Mesiolingual fossa

MAXILLARY PERMANENT CANINE-MESIAL ASPECT n Crown is triangular shaped and tooth appears bulky n

MAXILLARY PERMANENT CANINE-MESIAL ASPECT n Crown is triangular shaped and tooth appears bulky n n Mesial surface is generally convex but region above contact area is flat Labial outline is convex with crest of contour located more incisally

n Lingual outline convex in cervical 3 rd n Conical root with blunt apex

n Lingual outline convex in cervical 3 rd n Conical root with blunt apex sometimes curved n Shallow developmental grooves along root surface

Mesial aspect Crown n Shape - The crown is wedge shaped with base at

Mesial aspect Crown n Shape - The crown is wedge shaped with base at cervical 1/3 rd and apex at cusp tip. n The entire crown appears bulkier from this aspect because of prominent labial and lingual ridges. n A greater labio-lingual measurement of this tooth can be appreciated.

Mesial aspect Outlines n Labial outline is convex with the crest of convexity at

Mesial aspect Outlines n Labial outline is convex with the crest of convexity at cervical 1/3 rd n The outline becomes less convex as it proceeds incisally and becomes more of less straight as it approaches the cusp tip.

n n Lingual outline is convex in the cervical 1/3 rd at cingulum where

n n Lingual outline is convex in the cervical 1/3 rd at cingulum where the crest of curvature is located. The outline straightens and becomes concave at middle 1/3 rd and again convex in incisal ridge

Mesial aspect Cervical outline: n Cervical line is curving towards the crown with a

Mesial aspect Cervical outline: n Cervical line is curving towards the crown with a greater curvature on mesial side than distal. n Cusp tip is placed labial to root axis line in most of the canines n Mesial surface is convex on all aspects except for a shallow concavity between contact area and cervix. n Root: Root is conical with an apical taper.

Developmental groove Cervical line curvature

Developmental groove Cervical line curvature

Distal aspect General morphology is similar to that of mesial aspect. Differences observed are

Distal aspect General morphology is similar to that of mesial aspect. Differences observed are n Curvature of cervical line is less n Distal marginal ridge is heavier and regular n Developed depression on distal surface of the root is more pronounced than on mesial side.

3. Deeper dev groove 1. Cervical line curvature 2. Irregular distal marginal ridge

3. Deeper dev groove 1. Cervical line curvature 2. Irregular distal marginal ridge

MAX PERMANENT CANINEINCISAL ASPECT Labiolingual dimension appears greater than mesiodistal dimension n Middle labial

MAX PERMANENT CANINEINCISAL ASPECT Labiolingual dimension appears greater than mesiodistal dimension n Middle labial lobe appears well developed and can be seen as ridge extending from cusp tip towards cervical area n Cingulum appears prominent on lingual aspect n

Incisal aspect n n The crown is not symmetrical. The mesial half of the

Incisal aspect n n The crown is not symmetrical. The mesial half of the tooth appears more convex and bulkier labio-lingually than distal half. Cusp tip is located labial to midline in a labio-lingual direction. Although part of labial and lingual surfaces visible from this aspect more of lingual surface is seen

Incisal aspect n n Labially the labial ridge can be seen. The labial surface

Incisal aspect n n Labially the labial ridge can be seen. The labial surface is markedly convex near cervical region, becoming broader and flatter at middle and incisal 1/3. Lingual outline forms a shorter arc than labial outline because of lingual taper. Lingual surface present a prominent cingulum which is at center, marginal ridges, lingual ridge and lingual fossae.

MAXILLARY PERMANENT CANINE INCISAL ASPECT

MAXILLARY PERMANENT CANINE INCISAL ASPECT