<prompt> Commonest complication of Caldwell-Luc operations is:Oroantral fistulaInfra orbital nerve injuryHaemorrhageOrbital cellulitis  <response>: Ans. B infraorbital nerve palsy Ref. Scott Brown 7thed Vol 2 p 1494 MC Complication of Caldwell-Luc operation is injury to infraorbital nerve which occurs is 21 cases. 