A case history of dental implant placement in the anterior maxilla with invasion of the nasopalatine duct
together with the unidentified injury to an aberrant neurovascular canal inferior to the canalis sinuosus is presented.
These include soft tissue lesions such as salivary duct cyst (mucous retention cyst); oral heterotopic gastrointestinal cyst; dermoid and epidermoid cyst; and jaw bone lesions such as nasopalatine duct
cyst with labial cortical perforation, periapical (radicular) cyst with cortical perforation, dentigerous cyst with cortical perforation, and glandular odontogenic cyst with cortical perforation.
Surrounding the crown of unerupted teeth, simulating dentigerous cysts; between the roots of teeth, simulating lateral periodontal cysts or lateral radicular cysts; or in the maxillary midline, simulating nasopalatine duct
cysts are the most corm-non nonodontogenic developmental cysts originating in the incisive canal of the maxillae.(1) These cysts were once formally classified as and called fissural cysts.