border of the maxillary sinus


Anatomy Monday: Y line of Ennis (maxilla) 6

Today I am starting a new series for Mondays on anatomy. I will be showing different anatomical landmarks for both intraoral and extraoral radiographs.  This first entity I am showing is a radiographic anatomical landmark; the Y line of Ennis.  This is sometimes referred to as an Inverted Y.  It […]


Anatomy on Radiographs: Occlusal Radiographs

This is the last post I have planned for anatomy and it will be on occlusal radiographs. Mandible Short and sweet here with only one anatomical landmark readily visible. The genial tubercles (yellow arrow) appear as a small radiopaque mass(es) extending off the lingual aspect of the mandible. Maxilla The nasal […]


Anatomy on Radiographs: Intraoral Radiographs Part 2 7

This is part 2 (posterior) of anatomy on intraoral radiographs. Mandible The mental foramen  appears as a round to oval radiolucent area near the apex of the second premolar. The inferior alveolar nerve canal (mandibular canal) appears as radiolucent band with two thin radiopaque lines running parallel to each other […]


Anatomy on Radiographs: Intraoral Radiographs Part I 37

I am starting a new series of posts on anatomy on radiographs.  There will be two posts on intraoral radiographs (Part I – anterior and Part II – posterior), one on occlusal radiographs, one on pantomographs and lastly one on skull radiographs (primarily lateral cephalometric skull radiographs). Anatomical radiographic appearances […]