<prompt> Commonest complication of Caldwell-Luc operation isOroantral fistulaInfra orbital nerve palsyHaemorrhageOrbital cellulitis  <response>: The most common complication is paresthesia of the cheek, teeth and gingiva secondary to stretch injury of the infraorbital nerve. Microendoscopic surgeryThe most common complication is postoperative hypoesthesia of cheek and teeth. Head Neck surgery : otolaryngologyComplications of Caldwell - Luc operation Postoperative bleeding. This can be controlled by a nasal packAnaesthesia of the cheek due to stretching of the infraorbital nerve. It may last for a few weeks or months.Anaesthesia of teethInjury to nasolacrimal ductSublabial fistula oroantral fistulaOsteomyelitis of maxilla rare 