I need some advice. I had a large chip that my dentist repaired with a porcelain veneer. It always looked okay, but for some reason it’s turning dark at the top near the gumline. I don’t know why. I’ve only had it for two years. The dark line is really visible and is making me feel awkward about smiling. Do you know if this is normal? My dentist never mentioned this as a possibility.
Serena A.
Dear Serena,
I can think of a couple of possibilities for what is happening. If you truly have a porcelain veneer (and I’ll explain why I’m not positive that’s what you have in a moment), then it means it’s not bonded on properly. A porcelain veneer should sit flush against your gums so that nothing can become trapped there. If it’s not properly placed there can be a ledge. This will attract food and bacteria. If it’s not dealt with it will lead to decay. Poor bonding can also leave a space between the veneer and your tooth which will allow things to seep between them. Not only will this also lead to decay, but your veneer will turn dark from the things gathering beneath it.
However, if you had a very large chip it’s possible you were given a dental crown instead. Porcelain veneers are used for smile makeovers and only cover the front of your teeth. Dental crowns are used to cover the whole tooth when there are large chips or decay over a majority of the tooth.
If you were given a porcelain-fused-to-metal crown, it would explain the dark line as well. These will begin to show the metal at the top of your gums eventually. However, it generally takes more than two years for that to happen. There are a couple exceptions to that time rule. One is if you have gum disease. Another is if you brush hard. That can cause your gums to recede.
Either way, the only way to fix this is to have either the crown or the veneer re-done. If it is a crown, be sure to have them give you an all-porcelain crown this time, so you don’t have to worry about a dark line eventually showing up. However, if there is gum disease you’ll want to address that as well. If it’s a veneer, the problem resulted in an error on the dentist’s part. They should repair it for free.
I hope this helps.
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