In Steiner's analysis, which anatomical reference is used to measure the midline position?

In Steiner's analysis, the midline position is assessed using the reference from the columella to the pogonion. This measurement is significant because it helps determine how the dental and skeletal structures align in relation to the facial midline.

The columella is the tissue that forms the structure between the nostrils, and the pogonion is the most anterior point on the chin. By measuring the relationship between these two points, orthodontists can evaluate the symmetry of the face and the positioning of the dental arches. In essence, this reference is crucial for diagnosing and planning treatment for patients in orthodontics, ensuring that any deviations from the midline can be properly addressed.

The use of the columella to pogonion reference specifically provides a clear spatial orientation that is reliable for establishing the facial midline, making it a foundational measurement in orthodontic assessments.