Fig. 2. Reorientation and measurement of alveolar bone density in the sagittal views. A, B, Computed tomography images were reoriented to align the axis of the left maxillary and mandibular central incisors perpendicular to the horizontal plane. C, Posterior occlusal plane was aligned so it was parallel to the horizontal plane. D–F, Bone densities were measured at the alveolar crest (AC, yellow line) and at each depth (dotted lines; 5, 10, 15 mm from AC).
