Dr. Hall:


My wife has four porcelain crowns across her upper front, and our dentist placed Lumineers over them, at a cost of around five thousand dollars. But they keep coming off. On three or four occasions at least one of the Lumineers has come off. The last time, while my wife is visiting her mother in another country, two of them came off. Is it a good idea to place Lumineers over existing porcelain crowns? We are disappointed and extremely disgusted with the Lumineers.


–Keller from Florida


Dear Keller,


This procedure is being promoted to dentists by the Lumineers manufacturer. And I think what is happening is that dentists are thinking this looks pretty easy, and they're plunging in without knowing what they're doing. Here's a copy of the ad I took from a recent dental publication:


An ad encouraging dentists to place Lumineers over crowns.


Yes, Lumineers and other brands of porcelain veneers can be bonded on top of old porcelain crowns. But there are several big problems with this:

  • This is advanced cosmetic dentistry, and doing it right requires specialized equipment and materials that most dentists don't have, besides the fact that they haven't been trained in doing it. The old porcelain has to be prepared, etched, and primed or the new porcelain won't bond to it.
  • Even when it's done right, the results are mediocre at best. The bond between the old porcelain and the luting material tends to stain over time. And you'll still have the metal foundation on the old crown that you have to deal with.
  • When a crown begins to look dingy, it could be leaking and there could be decay starting underneath it. In that situation, it's just good dentistry to take it off and clean it out. Dentists can often be surprised at what they find. Covering the situation with Lumineers will give a result that may not last very long before the whole thing needs to be replaced.

Most expert cosmetic dentists will simply replace the old crowns with new all-ceramic crowns rather than cover them over with Lumineers or any other brand of porcelain veneers, because the cost and the amount of work is about the same, and because they want the final result to be beautiful, not just mediocre, and they want it to be sound and long-lasting. You paid $1250 per Lumineer. For about that fee, in Florida, you should have been able to get beautiful, new, all-ceramic crowns from a good cosmetic dentist.


Anyway, it sound like your dentist almost knew how to do this. I'd go back to him or her and insist that he or she either replace these four Lumineers with new all-ceramic crowns (if he or she even knows how to do that), or pay you to go somewhere else and have this done.


–Dr. Hall


Response from Keller:


Thank you very much for your prompt reply Dr. Hall. I really appreciate it. My next step is to find a local dentist that will concur what you say. I either want the over $5,000.00 dollars back that I spent on these damn Lumineers, or new porcelain crowns. Or I am taking him to court.




Other related questions:

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The bottom line: go to an expert cosmetic dentist for your Lumineers.

By Dr. David Hall

Written by a cosmetic dentist!

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