What is the deepest midline point on the curvature between the ANS and prosthion called?

The deepest midline point on the curvature between the anterior nasal spine (ANS) and the prosthion is referred to as point A, or Subspinale. This anatomical landmark is essential in cephalometric analysis as it represents a critical reference point within the facial structure, specifically along the maxillary occlusal plane, and is often used to analyze skeletal relationships and changes due to orthodontic treatment.

Point A is located posterior to the prosthion, which is the most anterior point on the maxillary alveolar ridge. The position of point A is significant because it helps in assessing the vertical and anteroposterior positioning of the maxilla relative to the mandible. For this reason, accurate identification of point A is foundational in planning orthodontic treatment, as it helps practitioners understand the configuration of the skeletal support framework.

In contrast, prosthion, which is an option, refers specifically to the most anterior point on the alveolar ridge of the maxilla, while B point (Supramentale) is located in the mandible, forming a different part of the cephalometric framework. Pogonion, another option, denotes the most anterior point on the symphysis of the mandible. Each of these points serves