Figure 1

Orientation of the skull in the Po-Or perpendicular to the sagittal Cg and Op. (A) Axial view of the midsagittal plane. (B) Front view of the Frankfurt plane.
Orientation of the skull in the Po-Or perpendicular to the sagittal Cg and Op. (A) Axial view of the midsagittal plane. (B) Front view of the Frankfurt plane.