In this video, Dr. Mark Fleming discusses a submitted case where the doctor was having difficulty with the fit of a veneer. The thread can be viewed here:
Level 4: Mastering Multiple Anterior and Posterior Restorations With CEREC
Many doctors don't realize the full potential of their CEREC technology because they don't use it to its full capacity. Some feel they can only use CEREC for posterior teeth, and consequently they lose out on the opportunities offered by anterior CAD/CAM dentistry. In fact, with CEREC you can achieve esthetic results equivalent to high quality labs.