Violation
Which anatomical structures form the inverted Y (Y line) in maxillary periapical radiographs?
Floor of the nasal fossa and maxillary sinus border
Zygomatic process of the maxilla and maxillary sinus border.
Anterior nasal spine and nasopalatine/incisive canal.
Nasopalatine/incisive canal and floor of the nasal fossa.