Lumineers is a cosmetic solution
The makers of Lumineers veeners also market them as a way to extend the life of existing porcelain dental crowns and bridgework which are no longer cosmetically pleasing. The idea is that ultra-thin Lumineers ® veneers can be bonded onto the front surface of porcelain restorations thus providing them with a renewed cosmetic appearance. Clearly only your dentist can make a determination about the appropriateness of this type of patchwork dentistry. Since the veneer covering will only provide a cosmetic change, the dentist must examine the dental work in question and determine that it is otherwise intact and clinically satisfactory. No doubt the original contours of the dental restoration were considered by the dentist who placed it to be ideal. The dentist performing the Lumineers patchwork must evaluate and determine if the added thickness of that will result in a restoration that is grossly over contoured.
In regards to resurfacing individual dental crowns, one might question the prudence of a "placing a restoration on a restoration" approach when probably for about the same cost and same number of visits the dental crown could simply be replaced. The advantage of the latter approach being that the restoration would remain just a single item created in the controlled environment of a dental laboratory as opposed to being patchwork assembled in the mouth.
