Which structure is known as the superiormost point of the external auditory meatus?

The superiormost point of the external auditory meatus is referred to as the Anatomical Porion (Po-a). This landmark is critical in cephalometric analyses, particularly in orthodontics and craniofacial studies, as it serves as a reference point in measuring the orientation and position of the skull and mandible. The Anatomical Porion is located at the uppermost point of the external auditory canal, making it essential for establishing the cranial base in various analyses.

By using this point in cephalometric assessments, practitioners can improve their understanding of cranial relationships and how they relate to dental and orthodontic treatment planning. These measurements are vital for creating accurate normative data and establishing a reference for comparisons in both functional and aesthetic treatment outcomes. The significance of using the Anatomical Porion comes from its consistency and reliability as a landmark in the head's anatomy.