Hey GoLakers,
Choosing a post-grad program based on the state you want to practice is tricky. Post-grad admissions in dentistry is very unlike dental school admissions in one big way - it's really hard to hold multiple acceptances to programs in different parts of the country. Many post-grad programs (general residencies as well as specialties like ortho, OMS, pedo) utilize the Match service. It works something like this - you apply to all the programs you want to attend. Those programs might interview you. After the interviews, you have to rank the programs you applied to, so you rank the one you really want to attend (and also interviewed you) #1. The programs also rank all of their applicants based on how badly they want them. And on a set date, you get an envelope with only one program listed on it - your "match" and that is where you are bound to attend. On that day, the program also finds out which of its applicants matched with them and will be starting their program next year.
It's really confusing. You could probably choose where you want to attend if you were to do general dentistry. For example, if a NY student wants to do a general dentistry residency (GPR or AEGD) in Florida, and they apply only to all the programs in Florida (lets say 10) and get a few interviews (like 5), the person has a really good chance of getting a residency in Florida. Maybe not exactly in Miami like the student wants, but still in Florida. But a specialty program would be really hard to arrange like this since some cities/states only offer 1 program in the specialty.
Also, to add to the mess, some programs don't participate in the whole Match system (some general residencies, many Perio, Endo, Prostho). Those programs usually interview you and let you know if you are in or not before the whole Match thing - that way if you say yes to them, you drop out of the Match because you already have an acceptance.
The whole point of the system (Match or non-Match) is to prevent applicants from hoarding multiple acceptances. I mean, look at the pre-dents on this board. There are plenty of people putting deposits down at one school, although they still have their fingers crossed for some other school (which is ok, since that's how dental school acceptances work). With this system, everyone only gets one acceptance and it is to a program you wanted to attend a little bit anyways, or else you wouldn't have applied there.
Sorry to ramble, I hope this answers your question.