بسم الله الرحمن الرحيم Intraoral anatomy



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بسم الله الرحمن الرحيم

Intraoral anatomy

First of all am really sorry for being late, actually it’s my false, good luck with your finals

Todays’ subject about the intraoral anatomy and how it appears in radiographic images

Why it is important to know about intraoral anatomy (the natural structures inside our skull)??

In order to differentiate between it and other abnormalities we might face during our practice, because it’s unbelievable every time we see a fissure or space between two bones to think it is a fracture or a cyst.

It’s harder to deal with anatomy by radiographs than normal(like in the second year), because here there is superimposition between the structures, so you have to have a 3D image inside your head in order to be able to imagine the structures, for example when the nose is superimposed over the teeth so you have to imagine its natural position, also when you take a panoramic image the nasal contcha is super imposed so the inferior concha or turbinant (am not sure about the spelling) appears smeared all the way over the maxilla. So you have to know these patterns and the physiology behind it in order to differentiate between them.



  1. The maxillary incisal projection:

We can see bunch of teeth, nasal cavities, nasal septum….(in the picture below), but we can’t see the maxillary sinus(it’s too far away)



In the radiograph, nasal cavities appear as spaces (radiolucent)and above them a structure called the inferior concha or turbinant appears more radio opaque which means that it is a tissue not a space ,and the nasal septum as a line (radio opaque) .


1st arrow(on right) :



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