When I was in Cambodia last week I bumped into a Kiwi dentist teaching at the University there. He recommended one clinic for visiting tourists:

Here’s a comparison of some costs between them and my clinic in Mazatlan, Mexican Dental Vacations:
Extraction $60 in Mexico, $25 in Cambodia.
Crown on gold $500 in Mexico, $450 in Cambodia.
Root canal $350 in Mexico, $100 in Cambodia.
The one in Mexico is 40-50% of the cost of dental work in Canada. Cambodia closer to 25-33%.
On the other hand, Mexico is much closer to me in terms of travel.
… I’m definitely considering the Cambodian option. Especially now that I have friends in that city.