This might be an obvious answer for someone more experienced with using 3D printers, but for a novice as myself I'm not quite sure I understand the engineering behind it. As I understand, currently aligners are thermo/vacuumformed from 3D printed dental molds. Why don't dental labs skip the step of 3D printing the molds, and just print the aligners? My research said that typical aligners are between .5 and 1.0 millimeters thick, and a lot of the dental printers out there have resolutions of 25 to 100 microns. Is it that it would just be too few layers, and therefore too flimsy for the aligners? Thank you in advance!