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The nasopalatine duct cyst is the developmental non-odontogenic cyst caused by epithelium remnants of fetal nasopalatine duct. The trauma of incisive canal associated dental implant placement in the anterior maxilla can cause the nasopalatine duct cyst. It is difficult to identify the nasopalatine duct cyst or the location of the incisive canal, only using periapical radiograph or panorama radiograph. So it is necessary to take computed tomography scan for an analysis on the relation between the implant and the incisive canal. This case report present the patient had the nasopalatine duct cyst following the placement of dental implant in the anterior maxilla, and was undergone implant removal and cyst enucleation with bone graft.