These sturdy dental trays are made of a thick poly-carbonate plastic to resist twisting and distortion of the dental impression. They can be cleaned and reused many times.
This is a Medium Upper tray. The dimensions of the inside of the tray are
Dental trays are available in:
Accu-Cast sells a dental grade alginate to non-dentists called 270-D. We can sell it to non-dentists because the word "dental" does not appear on the packaging.