I have an expat friend who has lived in the Philippines for years. His wife needed 17 different things done to her teeth and went to this place: http://www.drrowenamarzo.com/team.html
Her total bill was under $600. The dentist offers “dental tourism”, has a nice looking staff, and a plane ticket and hotel are pretty cheap compared to a US dentist.
He says all the dentists there are female, and all are cheap. I’d pick Manila over Mexico any day.
Looks like a good place for a Minnesotan to make a January dental trip.