Posterior superior alveolar artery Tags: Anatomical Structure, Artery.The posterior superior alveolar artery (posterior dental artery) is given off from the maxillary frequently in conjunction with the infraorbital artery just as the trunk of the vessel is passing into the pterygopalatine fossa. thumbnail branch to Alveolar canals Dorlands prefix a_61 Dorlands suffix 12153442 Gray page 562 Gray subject 144 supplies Molar (tooth), Premolar Learn more... Loading...