Ditto on calling to ask ^
Our dental office also uses a CEREC machine, albeit an older model, but still works very well (and it's pretty cool)! My dentist is a Tufts alum and is proficient in using CEREC. Now, I'm not sure if she learned it through the CE courses or through her education at Tufts, so please don't quote me on this lol. Call to make sure.