Endoscopic-assisted foreign body retrieval from the maxillary sinus

The roots of upper molar and premolar teeth are often close to the maxillary sinus. Extraction of these teeth can therefore be unpredictable, with complications such as oro-antral communication occasionally arising. This can lead to foreign material being displaced or extruding into the sinus cavity. Foreign bodies within the maxillary sinus are predominantly iatrogenic in origin, and their management involves removal traditionally via a Caldwell–Luc approach and, more recently, functional endoscopic sinus surgery. This article presents a case involving the incidental discovery of a foreign body within the maxillary sinus following extraction of a dental implant in the upper molar region. The clinical presentation, radiographic findings and management using an endoscopic-assisted minimal access Caldwell–Luc technique are described. Preventive measures to minimize the risk of such complications following maxillary tooth/implant extractions are also discussed. CPD/Clinical Relevance: Accidental displacement of dental materials into the maxillary sinus following upper molar or implant extraction can lead to oro-antral complications.