The maxillary sinuses are air-filled cavities located in the cheekbones that help humidify inhaled air and lighten skull weight. When these sinuses become chronically infected or obstructed, patients may develop persistent facial pain, nasal blockage, foul-smelling discharge, headache, and recurrent sinus infections. Caldwell-Luc antrostomy is performed under general anesthesia by making an incision in the upper gum above the canine teeth, allowing direct access to the maxillary sinus. The surgeon removes infected mucosa, polyps, or debris and creates a drainage pathway into the nasal cavity. While functional endoscopic sinus surgery (FESS) is now the preferred approach, Caldwell-Luc is still used when endoscopic access is limited or when extensive disease is present. Recovery involves gradual healing of the incision and improvement of sinus ventilation over several weeks.