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 is created by the superimposition of the floor of the nasal cavity (straight radiopaque line) and the border of the maxillary sinus (curved radiopaque line).
If you have any questions or comments or would like to see a specific anatomical entity, please leave them below. Thanks and enjoy!