Call some dental labs and see if they will allow you to come in and observe. Once you're there they may let you practice wax ups, pour molds, paint porcelain, and drill away at some teeth. This may not answer the exact question you asked, but its a good way to get great experience for dental school. You will be ahead of other students. It's like a simulated training course. Of course you have to find a dental lab that will comply.