News from the ADA Annual Session:
Just last month I wrote this:
What I like best about the Cerec AC is that at this time it is the only system that can function as an impression only system similar to iTero or Lava and then can be upgraded to a full chairside CAD CAM unit.
That is no longer accurate. E4D has announced a similar program called Sky Network. That means you can use your CAD CAM system when it is the best option, for example to mill a single posterior unit. However if the restoration is not a good candidate for CAD CAM, for example a multiple unit anterior bridge then you can capture a digital impression and send it to a lab for fabrication.