... body and total mandibular length (3-D CT, hard tissues, patient K.C.) 249 CHAPTER 3-D Cephalometric Analysis a b Fig 7. 14 a, b Right and left mandibular vertical ramus, body and total mandibular ... landmarks Fig 6.29 Sella, Nasion and Menton landmarks define the facial midplane (linked virtual lateral and frontal cephalograms, patient K.C.) Figs 6.30, 6.31 Sella, Nasion and Menton landmarks ... planes ▬ A 3-D cephalometric plane computed from three 3-D cephalometric landmarks is defined by a plane that passes three landmarks (e.g maxillary plane, mandibular plane, facial midplane) ▬ A...