The facial type is characterized by a variability of facial shape in the vertical direction. According to the archial analysis of Sassouni, orientation of four facial planes is varying

  1. Basicranium (Sellion - Nasion)
  2. Maxillary (Anterior Nasal Spine - Posterior Nasal Spine)
  3. Occlusal
  4. Mandibular (Chin - Gonion)
The figure below shows modeling of the facial type that was computed from a sample of 200 headfilms.

The Procuste software uses this model to personalise the optimum before superimposition with the case.

The facial type is not imbalance but a normal variation of human physiognomy.