Nasopalatine Duct Cyst After Maxillary Central Incisor Implant: Case Report

Clinical cases have shown that post-implant cysts in the maxillary central incisor region adjacent to the nasopalatine canal are not uncommon. This case report demonstrates a standardized treatment protocol for nasopalatine duct cysts following dental implantation, featuring a staged therapeutic approach combined with GBR and prompt management of infected graft sites, ultimately ensuring successful treatment outcomes. A 61-year-old hypertensive male presented with painless maxillary swelling and nasal obstruction 4 years post-implantation. CBCT showed a 17×18×12mm cyst around implant #21 involving tooth #22′s apex. Treatment included implant removal, cyst enucleation, apical resection with MTA retrofill, and socket preservation. 3-month follow-up: good healing. 5 months: palatal abscess (incision and drainage). At 6 months: mucosal healing, stable bone; stage-I implant with GBR at defect site, CBCT-confirmed success. 1.Cyst formation following incisor region implantation is relatively common, primarily associated with pre-existing nasopalatine duct abnormalities, necessitating rigorous implant site risk assessment. 2.Immediate bone grafting post cystectomy effectively preserves the site, maintains alveolar contour, shortens healing time, and improves implant success rates. 3.Extensive grafting may lead to self-limiting infections due to compromised vascular supply, with resultant graft deficiencies being repairable during subsequent implantation procedures. The successful outcome validates staged implant therapy with GBR for peri-implant cystic defects. This approach addresses both biological and functional requirements while managing complications. The case provides a protocol for similar scenarios, emphasizing thorough radiographic evaluation, biological closure, and monitored healing phases in compromised sites.