Fig. 4From: Advocacy of diagnostic criteria for maxillary incisive canal cysts based on alteration of normal maxillary incisive canals according to aging in Japanese populationsBased on CT sagittal sections of the incisive canals, the diameters of the nasal foramina are marked at the nasal entrances of the maxillary incisive canals, and the diameters of the incisive foramina are marked at the oral entrances of the canals. The canal diameters are measured at the midpoints between these two levelsBack to article page