My interview was very stress free. I actually enjoyed the interview activities we did in the morning. The dean is a really great guy, super nice, knows most of the dental students by name and about them. He is friendly and seemed very genuine.
The interview's goal is to see how well you work with your hands and other people and if you know about the world around you.
Don't stress, though the interview feedback is blocked for Arizona, if you relax and be yourself you should have no trouble.
Good luck!