The anatomical and radiological study of the greater palatine canal al
lows to show that this canal constitues a significant communication be
tween the oral cavity and the pterygopalatine fossa. It contains vesse
ls and nerve directly related with the pterygopalatine segment of the
maxillary artery and nerve. The radiological and CT study of this cana
l allows a better understanding and accomplishment of surgical or anae
sthetic treatments concerned with the posterior maxillary region.