I'd highly recommend talking to people, especially dentists you might know about it. School choice is really difficult, especially because there really are no bad choices in a dental school. As far as Pitt, I must admit that I'm partial, and I'm sure you can find plenty of things about it and all of the other schools on SDN (if you're interested, search for a post by me called "Columbia vs. Pitt"). I'd suggest giving Dr. Etzel, the dean of student services at Pitt a call and talking to him about it. He's a great guy, and he'll be very honest - let him know what schools you're thinking about and why, and he'll give you a fair shake from Pitt's standpoint, and answer any questions you might have very honestly. I know talking to him really helped me making my decision last year.
As I've seen in my year so far at Pitt, there's pros and cons to everything, but just remember that any decision you make will still be a good one, and that in all honesty, you're in a very good place having been accepted to multiple dental schools. Also, I'd highly suggest going with your gut, I know it would have saved me a lot of headache, haha.
Good luck, and if you end up going with Pitt, I'll see you at Orientation in June!