The US government spends a similar amount of money per person on healthcare as other western countries do. But unlike Europe, Australia, Canada, Japan and so on, people don’t even get free healthcare in exchange for all that tax money. The system is deeply flawed. I don’t know anything about the Japanese healthcare system, but I’d still choose to be sick in Japan than America any day of the week.
It cost about 25% of US prices to fly to Costa Rica, stay at a resort, and get the procedure done in a top notch facility. And that's if you just need 1 root canal and crown. If you need even more done the savings move closer to 90%.
And that is a really nice places. You could drive to Mexico and get it done at a decent place for comparatively nothing.