<prompt> Nerve injured in Caldwell Lus operation is?Lingual nerveInfra orbital nerveOptic nerveFacial nerve  <response>: Ans. isbi.e., Infra orbital nerve.Complications of Caldwell - Luc operationPost - operative bleeding. This can be controlled by nasal packAnaesthesia of the cheek due to stretching of infraorbital nerve. It may last for a few weeks or months.Anaesthesia TeethInjury to nasolacrimal ductSublabial fistula oroantral fistulaOsteomyelitis of maxilla rare 