I hope you get some repsonses!
But if you don't and if you do choose to go to a post-baccalaureate program there are a lot of choices. I haven't gotten into a program myself (yet), but I've been doing a lot of research into them and I've found that at least the ones I've looked into (Harvard, Penn, Columbia, U of Texas - Dallas) support pre-dental students. In my experience, most of the post bacc. programs' websites will show their focus on medical school prepartion, but after emailing a few of the schools I listed above I get the impression that most programs can work just as well for pre-dental study. The only thing that might be missing at most schools is the linkages to dental schools.
In my opinion you can probably do any post-bacc. program for dental school preparation, but I'd double-check with the program before you make any moves. Email them through their contact page. Good luck!
I just realized that you might be talking about retaking classes or doing a Specialized Masters Program (SMP). Everything I wrote above was geared towards programs where you can take your prerequisites for dental school. I don't know much of anything about the SMP's myself, but there are plenty of threads on the board devoted to it. Do a forum search. As for retaking classes, some of the post baccalaureate programs allow it, while others only allow you entrance if you've only take a few or even none of them. That's another thing to check up on with each program. I know that the more 'premium' programs like Bryn Mawr, Goucher and John Hopkins have strict rules on whether or not you can retake any of the science courses if you've already taken them. One of those three doesn't let you retake ANY of the courses, no exceptions. I can't remember which one it is off of the top of my head though!
