Figure 6
The process of obtaining the average arch model using the segmented 3D image. (a) Segmented 3D mandible. (b) Axial MIP image created by selecting the dental arch and the posterior mandible containing the ramus and condyle in the segmented 3D image. The yellow area represents the ramus and condyle, whereas the blue area represents the dental arch. (c) Thirty MIP images were superimposed on the center of the bilateral distal contact points of the canines (red points). (d) The added images were binarized using a threshold value of 0.47 to obtain the average arch shape. A central line represents the center of the average arch shape. 3D, 3-dimensional; MIP, maximum intensity projection.
