Jeff, we would whip you out a closed mesh file with no flaws that is prepared for printing.
We would use Rhino with DentalShaper add-on, and import whatever you have.
We can add you lab's name anywhere you want in 3d text, and you can spe4cify how tall you want the base to be....
Maybe you want the model hollow with inner-walls? Many options.
Or, we have other software if that won't work. We can do it today, anytime up to 8:00PM.
(I was here till after 9:00 last night!)
Brad @ 804-285-0777 would help ya, or me.
Never heard of a Doc with a 3dPrinter before? Also, most all software for setting up a print job included basic file repairing to close any holes in base of model file. So, often, it is not necessary IMO.