Permanent Maxillary Lateral Incisor (3D Morphology)
Channel: Air Tutor
Date: 2021-03-06

🌠Join the movement & Subscribe: https://bit.ly/2Hyyq8U

🎞Maxillary Central Incisor: https://bit.ly/3uwLOT0
🎞Maxillary Canine: https: https://bit.ly/3irdu73

🗣Please share the video if you found it helpful and leave a like.
Thank you

🙏🏽Support the channel: 
Patreon: https://bit.ly/3B45IHj
PayPal: https://bit.ly/3FcgKNm
CashApp: £AhmadAcademy

📥Enquiries: Saadiqhamidi@icloud.com


3D morphology of the Permanent Maxillary Lateral incisors.  
These are in a pair located laterally to their respective central incisors  
They develop from 4 lopes of calcification (3 forming the incisal mamelons and 1 gives rise to the cingulum)  
 

1 - number 1 is the Labial viewing aspect of the tooth - This view considers the surface of the tooth facing the lips.  



- compared to the maxillary central incisors from this viewing aspect we can observer that the lateral incisors have: 

A distal outline which is more rounded. 

A more rounded Disto-incisal and mesio-incisal line angles. 

The mesial and distal contacts are more cervical. What this means is that the point at which they make contact with the neighboring tooth is more cervically placed 

The Incisal edge is more curved and slopes towards the distal edge.  

- a Cervical line with an even curvature towards the root 

- The Mesio-incisal line angle is sharper (Near 90) and less rounded compared to the disto-incisal line angle  

The root is often curved slightly distally. 

 

From here you should be able to tell which maxillary lateral incisor we are using in this video. Have an educated guess in the comment section weather this is the left or right lateral incisor. 
 

2 - number two considers the Palatal viewing aspect of the tooth – This is the surface of the tooth facing the palate. from this view we can observer:  


a small convexity called the cingulum  

a large concavity called the lingual fossa. In this area the Prescence of a deep developmental groove is visible on the distal side of the cingulum which may extend to the root 

The cingulum is more prominent than on the central incisor 

along the mesial and distal sides are slightly raised portions called marginal ridges.  


3 – Mesial - from this direction we can observe the portion of the tooth visible from the side closest to where the middle line of the face would be: from this aspect we can observe:  

The general morphology being Similar to a small central incisor except the root appears longer  

Cervical line curvature is more curved towards incisal direction  

The incisal ridge appears thickert than the central incisor  

Root appears tapered, cone shaped with a blunt apex  

A line drawn through the center of the root bisects the incisal ridge of the crown  

Fits into the geometric shape of a triangle  
 

4 - and finally the distal viewing aspects of the tooth.  from this direction we can observe the portion of the tooth visible from the side furthest from where the middle line of the face would be) from this viewing aspect we can observer  

The width of the crown looks thicker distally than the mesial view 

the crown looks wedge shaped  

A line drawn through the crown and the root will bisect the incisal ridge and the apex of the root  

the Cervical line has less curvature incisally than on the mesial surface. This is a key point to help you distinguish between the left and right maxillary lateral incisor   


Sources: 

https://en.wikipedia.org/wiki/Maxillary_lateral_incisor 

https://sketchfab.com/3d-models/maxillary-lateral-incisor-5e89ddbfc6454e2e8e09c645574b8932 

https://sketchfab.com/3d-models/maxillary-left-lateral-incisor-endodontic-4779673ffd7343adba33558f793b2e7c 

https://sketchfab.com/3d-models/maxillary-left-central-incisor-c8a7c2d9280d4c92bc651cfa1459866a 
 

https://www.google.com/search?q=cervical+direction+teeth&sxsrf=ALeKk01ZViXH3NDGZ-dE5TXcOYi4FT7Ogg:1613584624455&source=lnms&tbm=isch&sa=X&ved=2ahUKEwiG3OuSv_HuAhVlUBUIHRZVCksQ_AUoAXoECCcQAw&biw=965&bih=898#imgrc=hJmAM1CCUgQHLM&imgdii=7wo1cGQkJ8uYlM 
 

🔊Music licensed from: https://www.storyblocks.com 


**FAIR USE**
Copyright Disclaimer under section 107 of the Copyright Act 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, education and research.