While I was off exploring CES Sirona announced an improved camera to create digital impressions for the Cerec system. Follow the link for details. The basic improvements seem to be shorter wavelengths for more detail and an automatic capture system. It can also take full arch impressions by stitching together several images.
CEREC Bluecam –
SHARPEN YOUR FOCUS.
The high-precision lens system of the CEREC Bluecam sets a new standard in measurement accuracy and delivers an unprecedented level of precision. The high-performance diode emits blue light with a short wavelength. The resulting optical impressions are extremely accurate. This applies to single-tooth as well as multiple images.