Sella-Nasion Plane

The Sella-Nasion Plane is an imaginary line used by orthodontists and maxillofacial surgeons to analyze facial and jaw structures. It connects two specific points on the skull: the Sella, a saddle-shaped part at the center of the skull base, and the Nasion, the point where the nasal and forehead bones meet. This plane serves as a reference for assessing the alignment and proportional relationships of facial bones, helping clinicians diagnose and plan treatments for dental and skeletal issues. Essentially, it’s a standardized baseline for evaluating craniofacial structure orientation in imaging studies.