Giant dentigerous cyst encasing an impacted third molar in the maxillary sinus: A unique case study with comprehensive literature review

Dentigerous cysts are developmental cysts that are commonly associated with impacted teeth. These cysts can appear atypically in the maxillary sinus. Usually, they do not cause symptoms and are incidentally discovered through radiographic examinations. However, larger cysts may lead to a symptomatic presentation. This report presents a case of a substantial dentigerous cyst in the maxillary sinus with an impacted wisdom tooth in a fifteen-year-old male. The surgical procedure, involving decompression and enucleation under local anesthesia, was conducted a month after the diagnosis. Histopathological examination confirmed the diagnosis of dentigerous cyst. This study emphasizes postoperative complications diagnosed using cone-beam computed tomography (CBCT). Periodic panoramic radiographic examinations in pediatric patients should be conducted solely based on individualized clinical indications, ensuring compliance with current radioprotection standards. This approach facilitates the early detection of maxillomandibular pathologies such as cysts while minimizing unnecessary radiation exposure and prioritizing patient safety. Cone-beam computed tomography (CBCT) is recommended for accurate diagnosis, treatment planning, and postoperative monitoring. Surgeons are encouraged to tailor each operation individually to optimize patient outcomes. Excised tissue should be subjected to histopathological examination to establish a precise diagnosis. • Giant dentigerous cyst in maxillary sinus treated with decompression and enucleation. • CBCT aids in diagnosis, treatment planning, and monitoring. • Histopathology confirms dentigerous cyst diagnosis. • CBCT follow-up detects complications like chronic sinusitis. • Oral surgeons and ENT collaboration is key for treatment.