Foreign bodies in maxillary antrum, whatever their origin or nature, are unusual. Usually it presents as unilateral unexplained chronic rhinosinusitis and rarely as fistula over facial skin. The diagnosis is usually based on the history, proper examination, and radiological findings. Mostly foreign bodies are of dental origin, such as tooth roots, dental impression material, root-filling materials, dental implants, and burs. Foreign bodies in maxilla lodge during various procedures, but sometimes, there may be history of blast injuries and penetrating objects. We are reporting a special case of foreign body maxillary antrum that occurred during the road traffic accidents and was misdiagnosed and treated for a long time as osteomyelitis.