Alveolar antral artery

The alveolar antral artery (AAA) is anastomoses between the posterior superior alveolar artery (PSAA) and the infraorbital artery (IOA), cursing in the lateral part of the maxillary sinus termed “horizontal bony canal”. 

The alveolar antral artery may be present in the sinusal antrostomy. The haemorrhage of this vascular bundle represents the second intra-operatory complication in term of frequency during sinus lift procedure.