I suppose I'm biased because I'm a dentist but I couldn't stress how strongly I would advise against going abroad. I've seen such a spectrum of cases, some good but some terrible. Like everywhere, there's good and bad dentistry but the main thing to factor in is if it goes wrong, it can go very wrong. Most big aesthetic cases can be hard to maintain and if anything did go wrong, can be very difficult to fix, and certainly wouldn't be corrected on the NHS. I always advise factoring in the cost of returning a few times. Like everything, do your research. I know most people have their mind made up but it's always good to think about the what ifs. Good luck and do what's right for you.