Sometimes research oriented-ness is measured by amount of NIH funding:
The top five dentistry school recipients of NIH awards were:
1) UCSF ($18.3 million)
2) University of Michigan, Ann Arbor ($11.2 million)
3) University of North Carolina, Chapel Hill ($10.4 million)
4) UCLA ($10.2 million)
5) New York University ($9.1 million)
http://pub.ucsf.edu/newsservices/releases/200804185/