Fig. 1From: Quantitative analysis of the relationship between maxillary incisors and the incisive canal by cone-beam computed tomography in an adult Japanese population Landmarks, reference lines, and planes drawn on cone-beam computed tomography images. a Sagittal plane – passing through the midpalatal suture, perpendicular to the horizontal and coronal planes. b Horizontal plane – the palatal plane. c Coronal plane – passing through the right and left greater palatine foramina. Abbreviations: R right, L left, P posterior, A anteriorBack to article page