permanent canines

Maxillary Maxillary permanent permanent

caninecanine

-There are two maxillary and two mandibular canines. -They are called corner stone of the mouth.

-It has long root for good anchorage in the bone. -The middle labial lobe is well developed forming cusp

and labial ridge.

-The bone ridge over the labial surface of the root is called canine eminence (insure facial expression).

ChronologyAppearance of the dental organ 6 m.i.uFirst evidence of calcification 4-5 months.

Enamel completed 6-7 yearsEruption 11-12 yearsRoot completed 14-15 years

Type and functionThis tooth has the function of incising, holding and tearing food as well as esthetic.

No. of lobesIt has four lobes (three labial-the middle is well developed- and cingulum)

33 2 24 4

RelationThe upper canine make contact mesially with the distal surface of the lateral incisors and distally with the mesial surface of the 1st premolar.

No. of surfaces It has four surfaces and incisal aspect.

Labial Lingual Mesial Distal

IncisalNo. of roots

It has one root.

Surface AnatomySurface Anatomy -The mesial half of the crown resembles the upper lateral

incisor where the distal half resembles a premolar.

Labial aspect☻Geometrical outline of the crown: Trapezoid.

-The short side cervically.-The long side incisally.

☻The outline: -Mesial outline starting from cervical line

convex till the junction of and incisal thirds ( contact area). Then become concave till cusp tip.

-The cervical line is convex root-wards.

-The distal outline is concave till the middle third (the contact area) then convex to the cusp tip.

-The distal slope is longer than the mesial slope.

☻Surface anatomy:-The surface is convex both mesiodistally and inciso-cervically.Elevations

-Cervical ridge. -Labial ridge.

Depressions -Two developmental grooves.

☻The root: -It is long, slender, conical in

shape with distal curvature of the apical 3rd.

-Cusp.

Lingual aspect

-It has the same geometrical outline and outline as the labial surface.- The mesial and distal sides of the crown and root converge lingually.☻Surface anatomy:

The elevations: -The cingulum.

-The marginal ridges (mesial and distal). -The lingual ridge.

-Mesio and disto-incisal ridges.

The depressions -Two lingual fossae.

Cingulum.

Mesial marginal ridge.

Distal marginal ridge

M.L.FD.L.F

M.I.RidgeD.I.Ridge

Lingual ridge

Enumerate the names of the following elevations and

depressions?

Mesial aspect☻Geometrical outline of the crown:☻Triangular in shape; the base cervically and the apex incisally.☻The cusp tip may be on a line that bisects the centre of the root or slightly labial to it.☻The outline:☻The labial outline is convex with the greatest convexity at cervical 1/3 ( cervical ridge).☻The lingual outline is convex at cervical 1/3 (cingulum).- Then straight at the middle 3rd and convex at incisal 3rd.

☻The mesial cervical line is convex incisally.

☻Surface anatomy:☻The mesial surface is convex with the maximum convexity at the junction of the incisal and middle 1/3s ( the contact area).

☻The root: -The root is broad and taper to blunt

apex.

-It has a distal developmental depression.

The distal aspect

☻Similar to the mesial aspect but differ in.

- The cervical line curvature is less than mesial ( by 1 mm).

-The contact area is broader and located at the middle 1/3 (more cervially).

-The developmental depression of the root is more developed.

Incisal aspect

-The labio-lingual diameter is greater than the mesio-distal diameter.

-The cusp tip is slightly labial and mesial to the center of the crown.

Labial

Lingual

M D

-The distal slope is longer than the mesial slope.

-All elevations and depressions can be seen from this aspect.

Enumerate the names of the following elevations and depressions?

Cervical ridgr.

Labial ridge.

D. slope.

D.M.R

Cusp tip.

M. slope.

Lingual ridge.

M.M.R

Lingual fossae. Cingulum.

☻Pulp cavity

►Mesio-distal section

►Labio-lingual section

-Has narrow pulp chamber.

-The root canal is long and tapering down to the apical foramen.

-The pulp chamber is pointed incisally.

-The root canal start cervically wide till about the middle then narrows to the apical foramen.

Mandibular Mandibular permanent permanent

caninecanine

ChronologyAppearance of the dental organ 6 m.i.uFirst evidence of calcification 4-5 months.

Enamel completed 6-7 yearsEruption 9-10 yearsRoot completed 12-13 years

Type and functionThis tooth has the function of incising, holding and tearing food as well as esthetic.

No. of lobesIt has four lobes (three labial-the middle is well developed- and cingulum)

332 2

4 4

RelationThe lower canine make contact mesially with the distal surface of the lateral incisors and distally with the mesial surface of the 1st premolar.

No. of surfaces It has four surfaces and incisal aspect.

Labial Lingual Mesial Distal

IncisalNo. of roots

It has one root.

Surface AnatomySurface Anatomy -The mesial half of the crown resembles the upper lateral

incisor where the distal half resembles a premolar.

Labial aspect☻Geometrical outline of the crown: Trapezoid.

-The short side cervically.-The long side incisally.

☻The outline: -Mesial outline Is straight with the mesial

outline of the root. The mesial contact area is at the incisal 3rd.

-The cervical line is convex root-wards.

-The distal outline is convex till the contact area at the junction of incisal and middle 3rds .

-The distal slope is longer than the mesial slope.

☻Surface anatomy:-The surface is convex both mesiodistally and inciso-cervically.Elevations

-Cervical ridge. -Labial ridge.

Depressions -Two developmental grooves.

☻The root: -It is long, slender, conical in

shape with distal curvature of the apical 3rd.

-Cusp.

Lingual aspect

-It has the same geometrical outline and outline as the labial surface.- The mesial and distal sides of the crown and root converge lingually.☻Surface anatomy:The elevations: (poorly developed)

-The cingulum. -The marginal ridges (mesial and distal).

-The lingual ridge. -Mesio and disto-incisal ridges.

The depressions -one lingual fossae.

Enumerate the names of the following elevations and

depressions? Mesio-incisal R.

Disto-incisal R. Lingual ridgeLingual fossa

Mesial marginal ridge

Distal marginal ridge

Cingulum

Mesial aspect☻Geometrical outline of the crown:☻Triangular in shape; the base cervically and the apex incisally.☻The cusp tip may be on a line that bisects the centre of the root or slightly lingual to it.☻The outline:☻The labial outline is slightlu convex with the greatest convexity at cervical 1/3 ( cervical ridge).☻The lingual outline is convex at cervical 1/3 (cingulum).- Then concave at the middle 3rd and convex at incisal 3rd.

☻The mesial cervical line is convex incisally.

☻Surface anatomy:☻The mesial surface is convex with the maximum convexity at the incisal third ( the contact area).

☻The root: -The root is broad and taper to blunt

apex.

-It has a distal developmental depression.

The distal aspect

☻Similar to the mesial aspect but differ in.

- The cervical line curvature is less than mesial ( by 1 mm).

-The contact area is broader and located at the middle 1/3 (more cervially).

-The developmental depression of the root is more developed.

Incisal aspect

-The labio-lingual diameter is greater than the mesio-distal diameter but in less proportion.

-The cusp tip is slightly lingual and mesial to the center of the crown.

Labial

Lingual

M D

-The distal slope is longer than the mesial slope.

-All elevations and depressions can be seen from this aspect.

-The mesial cusp ridge incline lingual.

Enumerate the names of the following elevations and depressions?

Cervical ridgr.

Labial ridge.

D. slope.

D.M.R

Cusp tip.

M. slope.

Lingual ridge.

M.M.R

Lingual fossa.

Cingulum.