Do Ceramic Crowns Turn Yellow?
No matter what material they’re made of, dental crowns can be expected to show certain signs of wear and tear over time, which could include discoloration. However, ceramic crowns shouldn’t turn yellow; if yours do, this is likely a sign that there’s something wrong with the crown. Damaged dental crowns increase the risk of additional damage to the tooth that supports them, so if you suspect that your ceramic crown is damaged, or if you notice it becoming discolored, see your dentist to get to the root of the issue.
Why Would My Dental Crown Turn Yellow?
Basically, there are three things that could make a ceramic crown appear yellow. Either the crown was damaged during an adjustment, the crown was damaged during a dental cleaning, or the crown isn’t actually made of ceramic. It is also possible for a ceramic crown to appear yellow in contrast with the natural teeth, which can happen after a teeth whitening treatment. This is because the ceramic crown material isn’t affected by bleach or other whitening treatments, while the natural teeth are, creating the illusion that the crown has darkened or yellowed.
When a crown sustains damage during an adjustment or cleaning, the risk of infection or damage to the supporting tooth increases, and dental attention is necessary. It’s possible that only the glaze on the ceramic crown has been damaged, but if more of the crown is damaged, it may need to be replaced. When the glaze of a ceramic crown is damaged, the area lacking glaze can appear dull or yellowed in contrast with the rest of the crown, and the area without glaze is actually more susceptible to staining from acidic or deeply colored foods or drinks, or from smoking. Such superficial stains can usually be removed by a dental professional using specialized tools, and, when the damage is merely cosmetic, the crown can usually be reglazed and restored to its lustrous, white appearance. The glaze on ceramic crowns may be damaged when the crown is being adjusted, as dentists may need to grind down an area of the crown to ensure a proper fit, and it is also possible for the lab that created the crown to glaze it improperly. In some cases, a dental hygienist could use the wrong tools or chemicals to clean the crown, damaging the glaze; while your dental hygienist should be aware of this risk, make sure to confirm that you have ceramic crowns if you’re seeing a new dentist or hygienist. Again, many of these issues can often be resolved with fresh glaze and minor cosmetic adjustments, but only your dentist can tell you this for sure.
In some cases, a crown may begin to yellow because it isn’t, in fact, made of ceramic material. Don’t be afraid to ask your dentist for a copy of the lab certificate for your crown, which can help you confirm that it is made of ceramic and not constructed from composite resin or other mixed materials. Additionally, ask to see your cosmetic dentist’s photo gallery before treatment so that you can evaluate potential results yourself. If you’ve already gotten crowns that you believe are ceramic and they’ve started to turn yellow, don’t be afraid to get a second opinion. Working with a reputable, respected dentist can help you take comfort in the durability and natural, pleasant appearance of your luminous, white ceramic crowns, an investment that should continue to provide support, protection, and a brighter smile for fifteen years or more.