Infraorbital Foramen and Pterygopalatine Fossa Location in Dry Skulls: Anatomical Guidelines for Local Anesthesia

Figure 1

It shows the frontal view of a human skull. Distances were calculated as shown in the figure. A parallel longitudinal line to the midsagittal plane from (A) the superior border of infraorbital foramen (IOF) to the maxillary alveolar ridge and (B) from the superior border of the IOF to the infraorbital margin (IOM).