I need 2 replacement veneers. I have had my ones for approx 12 years. One of them has moved slightly and there is a gap and they are not the same colour of my 2 front teeth (veneers either side) . My dentist said she could do this on the NHS - cost £198 or Private - cost £700...What I would like to know is why the price difference ? Will they be made the same way, with the same materials ? Is there a better colour choice going privately?Need some advice please ! Thankyou