The Masticator said:
Thanks for the info guys! Much appreciated. I just have a couple more questions. First, where do you find out about externships and which schools have them? Second, if there is a better chance that you get into the program at the school that you attend, then what are your chances at getting into other programs when there are usually only a couple of spots? Would these spots not be filled by students in their pre-doc program? It seems to me that its a long shot outside of your own school.
Great externships: Parkland in Dallas, LSU-Shreveport (these are the two at which I know you get great hands-on experience)
As far as finding out about other ones, there is a book with a lot of info on all the programs, but I can't remember what it is. Some of the info is pretty inaccurate. Here is the AAOMS web-listing of accredited programs--you can start here. Pick a program that you're interested in externing with, and then call them for the details. That's the best way.
http://www.aaoms.org/residencytraining.cfm
I'd start with one of these, and then try to do a couple at other programs that you're very interested in. The more exposure that you can get, the better. The more a program can get to know you, the better. However, be aware that you can also decrease your chances of going to a program by screwing around while you extern there.
As far as programs only taking people from their own dental school, I don't think that there's a program in the country that takes both residents every year from inside. I think there may be a few that usually end up with one of their own each year, but I think those tend to be few. I'm sure some other guys will pipe in and correct me if I'm wrong on this point.
I'm at Shreve, and I didn't extern here. Neither did my co-resident. It's not a necessity to extern somewhere in order to match there, but it can help you. We've had 6 or 7 externs since I've been here, and I'd only want to work with about half of them. Nothing burns me more than when an extern decides not to get up at 3AM for a call or doesn't get up to pre-round in the morning. This doesn't exactly give the impression that you're a hard worker. The guys that extern here that we tend to like are the guys that go home dead tired from taking call every night for two weeks. The nights to not take call are the nights when we tell you, "For God sakes, man, take a night off." Even then, if you still insist on getting up for calls, then you are going to make a good impression with everyone.
It's good that you're thinking about all of this early. I wasn't nearly as well-prepared...