I'm sorry, but this is a really,really BAD idea. Most of these kind of procedures are done in Mexico or other countries with substandard facilities and doctors who couldn't get liscensed in the US. You are not going to save any money unless you go somewhere that offers substandard care. Too many people have died trying to save a buck for me to ever consider something like that.
Medicine was not invented in the United States. Pioneering work has been done by doctors around the world.
Modern dental implants are based upon work originally done by the Swede Per-Ingvar Branemark. His work led to the founding of Nobel Biocar which produces dental implants.
The Wikipedia article on Dental Tourism notes, with regard to costs,
"With the international nature of some products and brands it is possible to make a valid [cost] comparison. For instance,
the same porcelain veneer made in a lab in Sweden can be as much as 2500 AUD in Australia, but only 1200 AUD in India. The price difference here is not explainable by reference to the material cost." (2500 Australian dollars = 2263 US dollars and 1200AUD=1086USD)
With an implant and crown costing two to three times the cost of a veneer you are looking at thousands of dollars difference. So if you are going to have multiple implants and crowns done in the United States, you could pay for your trip to WDW with the difference by having the work done overseas.
For vision correction surgery, the popular LASIK procedure was developed in Colombia by a Spanish doctor. This was after the Ukrainian doctor Svyatoslav Fyodorov (then in the old USSR) pioneered vision correction surgery by inventing the radial keratotomy procedure.
Plastic surgery has taken off in many Latin American countries such as Brazil, Venezuela, Bolivia, and Colombia. The surgeons there are highly experienced.
Some of the premier cardiac care in the world is performed in Bangalore, India by Dr Devi Shetty and his team of surgeons at his Narayana Hrudayalaya hospital. Surgeons who do a procedure more frequently tend to have better outcomes with their patients. In cardiac care, better outcomes mean more patients go home alive.
Medical care in the United States is outrageously expensive. It does not mean it is inherently better. Overseas you will not have the same options for litigation if things do go wrong. It is something each person must consider when deciding if overseas medical care is right for them.
Do research. If you are not comfortable with the idea, then so be it. But traveling for medical care is an affordable way to receive excellent care for many.