Which plane is drawn from the nasion to the pogonion?

The correct choice is the facial plane, which is defined by drawing a line from the nasion to the pogonion. This plane is important in cephalometric analysis as it provides a reference for measuring and evaluating facial relationships and dimensions.

The nasion is the bridge of the nose, located at the junction of the frontal and nasal bones, while the pogonion is a point on the symphysis of the mandible, specifically the most anterior point on the chin. By connecting these two points, the facial plane serves as a foundational reference for assessing the position of anatomical landmarks in relation to the overall facial structure.

This plane is instrumental in orthodontics and maxillofacial surgery for planning treatment and understanding facial aesthetics, as it helps to analyze the relationships between the upper and lower facial thirds.

The other options represent different anatomical planes that do not connect the nasion and pogonion. The palatal plane refers to the horizontal plane of the palate; the mandibular plane relates to the orientation of the mandible; and the occ plane describes the occlusal plane of the teeth. Each of these planes serves different purposes in cephalometric analysis, but they do not involve the direct connection from the nasion to the pog