In Canada (that's right, your frigid but friendly neighbor to the north) the degree depends on which school you go to. Some schools offer a DDS (U Alberta, U Toronto, U Sask, some others) but some offer DMD (U Manitoba is the only one I can think of right now).
After finishing your degree you have the choice to right both the Canadian dental exam ($1100) or the American Exam (something like $135 part one and $165 part two). There are test centers in Canada to write both.
I don't really think you have to worry to much about Canadian dentists overrunning the states though. Most of the schools only accept 30-35 students, but some in Ontario accept more than that. I would say that probably five to ten percent of Canadian Dentists end up in the States because pay is better and taxes are generally lower. The higher quality of living and public services in Canada seems to retain the rest despite the weather and the taxes.
As far as foreign students going to Canadian dental schools, there is a limited take of 1-2 a year, and scores must be very competitive to gain admittance. Also the American DAT does not count in Canada because there is no manual dexterity component. There is also a tuition hike levied against foreign students. I think 1st year is 55K Canadian (like 37k American) and then slightly less for the following 3.
American Dental schools will accept students who have done their bachelors in Canada. My orthodontists nephew was rejected from all the western Canadian dental schools but ended up getting admitted to some dental school in the eastern states (I don't know which one).
So I guess there are some foreigners among you after.... (quick paw, git the gunn. I'm a gunna git me on of 'em beaver lovn' canajuns)
Rampart