Onto part 2 of lateral cephalometric skull anatomy frequently used in orthodontics. Again identified on a dry skull first followed by the radiograph.
Orbitale (black star) – The lowest point of the orbital margin (also the anterior point for the Frankfort horizontal plane).
Key ridge (green heart) – The inferior portion of the zygomatic process of the maxilla.
Key ridge (green heart)
Floor of the orbital cavity (white line – directly posterior to orbitale)
Pterygomaxillary fissure (yellow inverted teardrop area)