fig4

Figure 4. Sequence of subjects under class III facial deformity. A and D showing the classical skeletal patterns involved in sagittal deficiency of the middle third of the face. B and E show the morphology related to the maxillary bone and the concavity observed in the lateral area of the nose. C and F show the ratio bone-to-soft tissue; the concavity and the position of the maxillary bone and anterior nasal spine is related to lack in support for the lower area of the nose. The more posterior pyriform contouring will show a poor support for soft tissue and the cartilage of the nose.