Why Are My Zirconia Crowns Turning Yellow?
Zirconia crowns are a popular choice for dental restorations due to their durability, biocompatibility, and aesthetic appeal. However, some patients have reported that their zirconia crowns are turning yellow over time. This article aims to explore the reasons behind this issue and provide possible solutions to help you maintain the natural appearance of your zirconia crowns.
1. Poor Oral Hygiene
One of the primary reasons why zirconia crowns may turn yellow is poor oral hygiene. Just like natural teeth, dental crowns require regular cleaning to prevent the buildup of plaque and tartar. If you fail to maintain proper oral hygiene, bacteria can accumulate on the surface of the crown, leading to discoloration.
2. Food and Beverages
Certain foods and beverages can contribute to the yellowing of zirconia crowns. For instance, highly pigmented foods like berries, soy sauce, and curry can stain the crown’s surface. Additionally, acidic drinks such as coffee, tea, and wine can erode the glaze on the crown, making it more susceptible to staining.
3. Smoking
Smoking is another significant factor that can cause zirconia crowns to turn yellow. The chemicals in tobacco can penetrate the porcelain layer of the crown, leading to a yellowish tint. Quitting smoking is the most effective way to prevent this issue.
4. Manufacturing Defects
In some cases, the yellowing of zirconia crowns may be due to manufacturing defects. If the crown was not properly glazed or if the porcelain layer was too thin, it may be more prone to discoloration.
5. Age and Wear
Over time, zirconia crowns can naturally wear down, revealing the underlying material. This wear and tear can lead to the yellowing of the crown. Additionally, the aging process can cause the porcelain layer to become more brittle, making it more susceptible to stains.
6. Dental Erosion
Dental erosion can occur when the enamel on your natural teeth wears down, exposing the dentin beneath. This can lead to increased sensitivity and, in some cases, yellowing of the zirconia crown as the tooth structure becomes more visible.
How to Prevent Yellowing of Zirconia Crowns
To prevent your zirconia crowns from turning yellow, consider the following tips:
1. Maintain good oral hygiene by brushing and flossing regularly.
2. Avoid highly pigmented foods and beverages, or rinse your mouth with water after consuming them.
3. Quit smoking to reduce the risk of staining.
4. Visit your dentist regularly for check-ups and cleanings.
5. Use a non-abrasive toothpaste to minimize wear and tear on your crowns.
If your zirconia crowns have already turned yellow, consult with your dentist. They may recommend professional cleaning, polishing, or even replacing the crown if necessary. By taking proactive steps to maintain your dental crowns, you can enjoy a healthy, beautiful smile for years to come.
