FIGURE 12 A screen-shot of the optical impression of the original crown of tooth #12 after recontouring with resin. This optical impression was correlated with the optical impression from Fig. 8. The 'section' window at the right shows the contour of the proposed restoration through the slice indicated by the white line on the left. In the 'section' window the yellow line indicates the contour of the preparation at this particular slice, the green line is the contour of the original crown with resin additions and the blue lines are the design lines created by the clinician.