Purplepoodles,
Lots of orthodontists now, at least in So. California, have a digital scanner called iTero. It takes a digital 3D scan of your teeth, and they send it to Invisalign, so you get your trays faster and no putty mess or allergy issues. HTH
Thanks TedByrd! Will be at the dentist on this week. Allergist approved and moving forward. So excited after all this time