Hello, currently I work at a dental lab, we just got in a new 3D scanner that scans in models of peoples teeth so that we can build crowns for the prepped teeth. I was told that it is a IR scanner. We have to put some type of spray or powder on the models so that the camera can see them good. This material is expensiv due to it being in the dental industry. i want to find a alternative material but do not know what things to use or try. If this isnt the correct forum for this question wich do you suggest.?