This is the most well documented ranking I have found, and I have a math/econ background. (Same ranking number indicates a tie).
http://forums.studentdoctor.net/showthread.php?t=600320
Top 10:
1 University of the Pacific Arthur A. Dugoni School of Dentistry 94.00
2 State University of New York at Stony Brook School of Dental Medicine 93.40
3 University of California at Los Angeles School of Dentistry 91.17
4 Louisiana State University School of Dentistry 90.60
5 University of California at San Francisco School of Dentistry 89.67
6 State University of New York at Buffalo School of Dental Medicine 89.33
7 University of Washington-Health Sciences School of Dentistry 89.17
7 University of Maryland Baltimore College of Dental Surgery 89.17
9 University of Colorado Denver 88.80
10 Medical College of Georgia School of Dentistry 87.60