Hey dental-
I'm in a similar predicament. My overall GPA is 3.28 and science is 3.05. However, it does seem that you are on the right track. Make sure that you do well on the DAT and you should not have any problems getting into dental schools. As far as which schools, I would suggest that you find out information about each. Then make your decision. Anyone's suggestion (including mine) would be purely subjective.
By the way, I am doing dental materials research too. Many of the papers on my topic has come from UofM written by Richard Laine. Do you know him? I'm just curious.
Anyway good luck!
Arby