Fig. 3

Navigational planning. The dataset was aligned to the Frankfurt horizontal and mid-sagittal plane. The loaded STL file of the maxilla in its original position (red) accurately aligned with the DICOM data and the registration splint (yellow). Registration landmarks were marked at the four indentations of the registration splint (red spheres). The planned maxilla position (green) aligned with the intermediate splint (blue), and target coordinates were marked at the five indentations of the intermediate splint (green spheres)