BACKGROUND: Caldwell Luc procedure was designed to remove irreversibly damaged mucosa of the maxillary sinus and to facilitate gravitational drainage and aeration via an inferior meatal antrostomy. Though the frequency of Caldwell Luc procedure has reduced with the advent of the more conservative functional endoscopic sinus surgery, it is still indicated in cases of irreversible scarring, polypoidal mucosal inflammation and chronic inflammation associated with mucociliary dysfunction. Although initially confined to the treatment of maxillary sinusitis, nowadays, it is also indicated in case of removal of foreign bodies from maxillary sinus, as an access to pterygomaxillary fissure and pterygo-palatine fossa, evaluation and stabilization of orbital floor fracture or removal of orbital floor in decompression. In spite of its effectiveness and variety of indication, it can be associated with complications, such as numbness, pain, paresthesia, damage to teeth and oro antral fistula. OBJECTIVES: This study aims to know the possible indications of Caldwell Luc procedure and to understand the effectiveness and the complication that can be associated with the procedure.