Dental Tourism for Implants: Opinions and Advice?

I anticipate requiring fairly extensive dental work in the future, primarily some extractions and implants. Because of the high cost here at home, I have been considering the “dental tourism” option. I am sure there are numerous dental clinics of high caliber , but it is difficult for a lay person to evaluate. Would appreciate any advice with respect to how to best evaluate such clinics outside the country, and if, in your experience, patients generally have a satisfactory result, or if problems result when they return home, and are difficult to treat. Many thanks for any comments.