I am going through a similar procedure at the minute and although there are huge savings to be made you have to think what happens if something goes wrong when your back in the UK, you wouldn't be able to have it fixed on the NHS and would be forced to go private.
Sometimes these cheap prices seem too good to be true and i agree, id prefer to bite the bullet (no pun intended) and go with a local and skilled dentist that will be there should something go wrong even if it does cost more.
---------- Post added 07-09-2017 at 13:16 ----------
To be honest after that long i would be looking at having dental implants put in, its pretty pricey (my 4 front teeth are costing around £7500) but they should last a lifetime.