Hi Millie....
I did my teeth (all 26 of em) last year....
I looked into Thailand as an option, but the responses back where less than reassuring... so i opted for a Hungarian dentist....
http://www.batorfi-dentistry.co.uk/It was a great success, but not a process for the faint-hearted, i was on serious prescription pain-killers for a month to get a good nights sleep... the sensitivity pain was high.
As Bela grinds your old teeth down to make pegs to hold your new veneers in place. Its highly skilled work.
In the UK the prices quoted from three London dentist to do this where between £26k - £48k...
The cost of all the work in Budapest was less than €9k.... many brits and yanks where at the clinic while i was there... and though his bedside mannner's a tad borish... the results for the money are very good.
Good luck