I don't know about the search but this is a very handy page with statistics about individual schools:
http://studentdoctor.net/schools/?view=dental
Read through the programs like you would a research paper. Asking good questions in the interview is a good way to show interest while simultaneously acquiring more info. I've read through the curriculum for UCSF and UOP at least 4 times and I have a nice list of questions I'd like to ask them...if only they'd invite me over for tea
🙂