Abstract
INTRODUCTION: Ectopic teeth in the maxillary sinus, particularly when associated with dentigerous cysts, represent a rare clinical entity that can lead to significant complications. Early detection and appropriate surgical management are crucial for optimal outcomes, with minimally invasive approaches gaining increasing prominence in contemporary practice. CASE PRESENTATION: An 18-year-old male presented with right-sided facial swelling and persistent discomfort. Advanced imaging revealed an ectopic maxillary third molar within the right maxillary sinus associated with a dentigerous cyst. The lesion was successfully treated using a transnasal endoscopic approach, achieving complete removal of both the ectopic tooth and cyst. Histopathological analysis confirmed the diagnosis of a dentigerous cyst without malignant features. The patient experienced complete symptom resolution during the three-month follow-up period. DISCUSSION: This case highlights the effectiveness of minimally invasive endoscopic techniques in managing sinonasal ectopic teeth. The use of CT provided crucial preoperative information for surgical planning, while the endoscopic approach offered superior visualization and reduced morbidity compared to traditional methods. The successful outcome validates this approach as a viable alternative to conventional surgery. CONCLUSION: Transnasal endoscopic removal represents a safe and effective treatment modality for ectopic maxillary sinus teeth with associated dentigerous cysts. This approach, combined with advanced imaging techniques, enables precise surgical execution while minimizing postoperative complications.