International Journal of Research and Reports in Dentistry

Aim: To describe the clinical presentation, surgical management, and outcome of implant-related oroantral communication complicated by chronic maxillary sinusitis following sinus augmentation, using a staged approach involving implant retrieval, antral lavage, and combined buccal advancement flap and buccal fat pad closure.

Methodology: A 65-year-old male patient presented with pain and pressure in the right infraorbital region, halitosis, poor oral hygiene, chronic rhinosinusitis, and mobility of implant-supported prosthesis in the right posterior maxilla. Cone beam computed tomography revealed bone loss around implant associated with chronic sinus pathology and oroantral communication. Surgical management included retrieval of the displaced implants, thorough antral lavage, placement of autologous PRF within the defect, and closure using a buccal advancement flap reinforced with harvested buccal fat pad to achieve tension-free primary closure in two steps due to active sinus infection. Postoperative evaluation was performed at regular intervals, including 7 days and 3 months.

Results: Healing was uneventful with successful closure of the oroantral communication. The patient demonstrated complete resolution of sinonasal symptoms, absence of nasal regurgitation, and stable soft tissue healing. At 3-month follow-up, no recurrence of oroantral communication or sinus infection was observed.

Conclusion: Combined use of implant retrieval, antral lavage, PRF, and dual soft tissue closure using buccal advancement flap and buccal fat pad provides a predictable and effective approach for the management of implant-related oroantral communication with chronic sinusitis.