There are many prosthodontic literature articles on the accuracy of digital impressions and the workflow to eliminate taking a final impression to create a master model. The digital scans are accurate enough now to be used to fabricate dentures, fixed implant appliances, crowns, bridges and even orthoodontic aligners. There is no reason a digital impression/file taken on a live patient with an optical scanner should not be consider a final impression! Every modern lab in the state uses a digital scanner to scan a patient's dental cast to fabricate a custom milled crown if they do not get the final digital scan emailed to them. 18VAC60-21-150 should be updated as requested on this petition.