Thailand
Places have listed prices, brochures and some do the serious stuff. European friend I know could have gotten serious stuff (implants) done in Hungary but went to Thailand as it was easier to chill during the 3 weeks in between. Last year, in Chiang Mai I had simple stuff take care of, one composite filling and some cleaning, cost $30 and took under an hour. Equipment was new, very clean standards...dentist was a young lady who spoke English and had studied abroad. Chiang Mai is loaded with small dental clinics.
Here is a site with prices. There are cheaper places. I think I used a place called Funsabai just outside the moat near Thapae Gate..
http://www.dentalchiangmai.com/price_dental_chiangmai.htmThe friend use one in Bangkok on Silom Rd for the serious stuff, she described the clinic as "space age" in terms of new equipment. I think it was this place.
http://www.silomdental.com/