The document discusses the anatomical features of canine teeth. It describes the maxillary and mandibular canines in detail. For the maxillary canine, it notes the crown is narrower mesiodistally than central incisors and has a large cusp with pointed tip. It also describes the lingual cingulum and ridges. The root is the longest and strongest of all teeth. For the mandibular canine, it is slightly narrower than the maxillary canine and has a smoother lingual surface resembling lateral incisors. Both canines erupt between ages 9-12.
I wanna share this to all dental students and colleagues. This is a simplified and concise description of the anatomical structure of a Permanent Maxillary Central Incisor.
I wanna share this to all dental students and colleagues. This is a simplified and concise description of the anatomical structure of a Permanent Maxillary Central Incisor.
Maxillary Second Premolar
the maxillary first premolar in function
Less angular ,rounded crown in all aspects.
Single root
Smaller crown cervico occlusally
Root length is as great or greater
BUCCAL ASPECT
Not as long as that of the first premolar
Less pointed
Mesial slope is
shorter than the distal slope
Buccal ridge of the crown may not be so prominent whencompared with the first premolarLINGUAL ASPECT
Lingual cusp is longer making the crown longer on the lingual sideMESIAL ASPECT
Cusps of second premolar are shorter with the buccal and lingual cusps more nearly the same length
Greater distance between cusp tips-that widens the occlusal surface buccolingually
No developmental depression on the mesial surface of the crown as on the first premolar
Crown surface is convex instead
No deep dev. Groove crossing the mesial marginal ridgeOCCLUSAL ASPECT
Outline of the crown is more rounded or oval rather than angular
Central dev. groove is shorter and more irregular
Tendency toward multiple supplementary grooves radiating from the central groove that may extend out to the cusp ridges
Makes for an irregular occlusal surface and gives a very wrinkled appearance
Centered in the maxilla, one on either side of median line, with mesial surface of each in contact with mesial surface of other
Two in number
Larger than the lateral incisor
These teeth supplement each other in function, and they are similar anatomically
Shearing or cutting teeth
Major function is to punch and cut food material during the process of mastication
These teeth have incisal ridges or edges rather than
cusps such as are found on canines & posterior teeth
First evidence of calcification
Crown completion
Eruption
Root completion
3-4 months
4-5 years
7-8 years
10-11 years
Maxillary Second Premolar
the maxillary first premolar in function
Less angular ,rounded crown in all aspects.
Single root
Smaller crown cervico occlusally
Root length is as great or greater
BUCCAL ASPECT
Not as long as that of the first premolar
Less pointed
Mesial slope is
shorter than the distal slope
Buccal ridge of the crown may not be so prominent whencompared with the first premolarLINGUAL ASPECT
Lingual cusp is longer making the crown longer on the lingual sideMESIAL ASPECT
Cusps of second premolar are shorter with the buccal and lingual cusps more nearly the same length
Greater distance between cusp tips-that widens the occlusal surface buccolingually
No developmental depression on the mesial surface of the crown as on the first premolar
Crown surface is convex instead
No deep dev. Groove crossing the mesial marginal ridgeOCCLUSAL ASPECT
Outline of the crown is more rounded or oval rather than angular
Central dev. groove is shorter and more irregular
Tendency toward multiple supplementary grooves radiating from the central groove that may extend out to the cusp ridges
Makes for an irregular occlusal surface and gives a very wrinkled appearance
Centered in the maxilla, one on either side of median line, with mesial surface of each in contact with mesial surface of other
Two in number
Larger than the lateral incisor
These teeth supplement each other in function, and they are similar anatomically
Shearing or cutting teeth
Major function is to punch and cut food material during the process of mastication
These teeth have incisal ridges or edges rather than
cusps such as are found on canines & posterior teeth
First evidence of calcification
Crown completion
Eruption
Root completion
3-4 months
4-5 years
7-8 years
10-11 years
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Permanent Maxillary Lateral Incisors-Dr Saba ArshadDr.Saba Arshad
Lecture on Maxillary Central Incisor-BDS 1st year
Learning Objectives;
1. To define and pronounce the terminologies of permanent dentition.
2. To label the anatomical landmarks of permanent maxillary central incisor.
3. To discuss the curves and segments of maxillary central incisors.
4. To be able to correctly draw the graph outline.
5. To be able to carve the teeth on wax models.
6. To discuss anatomical variations.
Reference;
1. Ash MM Jr 1993 Wheeler’s dental anatomy, physiology and occlusion, 7th edn. Saunders, Philadelphia
2. Berkovitz, B. K., G. R. Holland, et al. (2017). Oral Anatomy, Histology and Embryology E-Book, Elsevier Health Sciences.
Morphology of Permanent Maxillary Central Incisor- Dr. Saba Arshad.pptxDr.Saba Arshad
Lecture on Maxillary Central Incisor-BDS 1st year
Learning Objectives;
1. To define and pronounce the terminologies of permanent dentition.
2. To label the anatomical landmarks of permanent maxillary central incisor.
3. To discuss the curves and segments of maxillary central incisors.
4. To be able to correctly draw the graph outline.
5. To be able to carve the teeth on wax models.
6. To discuss anatomical variations.
Reference;
1. Ash MM Jr 1993 Wheeler’s dental anatomy, physiology and occlusion, 7th edn. Saunders, Philadelphia
2. Berkovitz, B. K., G. R. Holland, et al. (2017). Oral Anatomy, Histology and Embryology E-Book, Elsevier Health Sciences.
2. Introduction
Canines are very long and stable teeth
There are four canines placed at the corner of the mouth and
hence called the ‘corner stones’ of the dentition
They have a single pointed cusp (also called cuspids)
Maxillary canine erupts between 10-12 years and mandibular
canine erupts between 9-10 years of age
3. Maxillary Canine
Labial aspect
The crown of maxillary canine is narrower mesiodistally than
that of maxillary central incisor.
• The incisal aspect has a large cusp with a pointed cusp tip
• It has two slopes (cusp ridges), the mesial slope being shorter
than the distal slope
• The labial surface is smooth and bulky in the middle because
of the labial ridge
5. Lingual aspect
• The crown and root are narrower lingually
• The cingulum is well developed, large and sometimes pointed
like a cusp
• Occasionally a well developed lingual ridge is seen that
divides the lingual fossa into mesial and distal lingual fossae
• Heavy marginal ridges are associated with well formed
cingulum and fossae
7. Mesial aspect
• From the mesial aspect canine looks similar but bulkier than
maxillary central incisor
• Maxillary canine is the widest anterior tooth labiolingually
• The cervical line curvature is towards the cusp (incisally)
• The contact area is near the junction of the incisal and middle
third
9. Distal aspect
• Distal surface is very similar to the mesial surface
• The cervical line exhibits less curvature
• The contact are is near the middle third
Distal aspect
10. Incisal aspect
• The labiolingual dimension is greater than the mesiodistal
dimension
• The cusp tip is labial to the centre of the crown labiolingually
and mesial to the centre mesiodistally
• The labial ridge and the cingulum are very noticeable from
this aspect
Incisal aspect
11. Root – only one
The root is the longest and strongest of all the teeth in the
dentition
The mesial and distal surfaces of the root have developmental
depressions.
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Curvature of Cervical
Line
M D
Labiolingual
Diameter at
Cervical Line
Labiolingual
Diameter at
Crest of Curvature
Mesiodistal
Diameter at
Cervical Line
Mesiodistal
Diameter at
Contact Area
Root
Length
Crown
Length
Average Dimensions in millimeters
12. Mandibular Canine
Labial aspect
Mandibular canines are similar to maxillary canines except
that they are slightly narrower mesiodistally
Mesial outline of the crown is straight and inline with the
mesial outline of the root
The mesial cusp ridge is smaller than the distal cusp ridge
13. Lingual aspect
The lingual surface of the crown is smooth and flat simulating
the surface of mandibular lateral incisor
Cingulum is less prominent and marginal ridges are less
distinct
Mesial and Distal aspects
These aspects are very similar and the cervical line curves
more on the mesial aspect
The contact area on mesial aspect is in the incisal third and a
little higher on the distal third
14. Incisal aspect
Like maxillary canine the labiolingual dimension is more than
the mesiodistal dimension
The cusp tip appears inclined in a lingual direction
Root
The root is shorter by 1 or 2 mm
The developmental depression is more pronounced on the
lower canine