Oro-Antral Communications- A Review

Oro-antral communication(OAC) is an abnormal communication between the maxillary sinus and the oral cavity. If the oroantral communication is not treated, the epithelial tissues may grow in it leading to formation of oroantral fistula(OAF). The causes for OAC are varied and related most commonly to teeth rerlated factors including extraction of maxillary premolar and maxillary molar. due to the anatomical proximity of the maxillary sinus floor to the root apices of these teeth. Other causes includ