Just spent a week at the DentSim lab in NYC. It was a great week! I went in having never done a prep before and now feel so prepared for my D1 classes. The program and instructors gave me valuable one on one help for hours a day that I could not even imagine having in a classroom setting. Also they helped to make it enjoyable so that I still felt like I was on vacation. I recommend that anyone who is thinking about doing this program before they start there D1 classes do it!!! Not only will you be more confident, but you will enjoy it! Cant speak for how much this program will help those who already know how to to drill, because I didn't have that experience going in though I imagine it would be beneficial because DentSim shows you things that you can't even hope to see with your own eyes no matter what your skill level and I plan to come back to help improve my skills before I start seeing patients.