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Figure 25: The wand is now rotated to the lingual for the final scan of the
prepared teeth. The computer will then stitch these three views together
(incisal, facial and lingual) to complete the digital model. As long as you
treat the tissue well and don’t have any bleeding, this is a stress-free
procedure.
Figure 26: If desired, you can capture two interproximal shots to give
the computer a better idea about the contours of the adjacent teeth.
Rotate the camera 45 degrees from its normal anterior orientation to
capture two images of the proximal surfaces of the adjacent teeth.
Figure 27: My assistant and I will typically use lip retractors in the posterior,
but in the anterior, finger retraction is often enough. We powder
the lower anterior teeth in order to scan the bite to create the virtual
digital model. The upper teeth do not need to be re-powdered if they
have been kept dry.
Figure 28: With the patient biting into maximum intercuspation and with
the teeth powdered, the scanner is held parallel to the facial surfaces of
the teeth for scanning. The computer can now take the upper and lower
digital impressions and articulate them properly.
Restorative Photo Essay: The IOS FastScan and an Anterior BruxZir Bridge23