A dental crown is a great option to preserve a tooth that’s been compromised by decay, infection, or other issues. Crowns are made of high-quality materials to last for a decade or more with the correct care. However, you may see a black line appearing where your crown meets the gum line over time. Don’t panic. Here’s what’s causing the blemish and what your dentist can do to resolve it.
Common Causes of Black Lines
A black line can form near your gum line for various reasons, like:
- Metal Restoration: Metal restorations are more likely to cause black lines because of their dark appearance. The dark color of your crown may be visible through the thin tissue.
- Gum Recession: Your gum line can begin to recede near your crown over time. This can lead to a shadow caused by the crown.
- Decay: Although crowns can’t get cavities, your underlying tooth is still vulnerable to decay. Cavities occurring near the gum line can cause discoloration.
Treating Black Lines Caused by Crowns
If you have an older restoration and a black line has occurred, you’ll likely need a replacement. Your dentist will remove your old restoration and perform any additional treatments needed, like removing decay. They’ll take an impression of your mouth, which will be used to fit you with a new all-ceramic crown. It is customized to match the color, size, and shape of your natural teeth to blend in.
Get the Most from Your Crown
Crowns can last for 10 years or longer with the right care. You can ensure your crown thrives for many years and avoid a black line in the future by following a few tips:
- Good Oral Hygiene: Use a soft-bristled toothbrush and fluoride toothpaste to brush your teeth for at least 2 minutes twice a day. Floss daily, paying careful attention when cleaning where the crown meets your gum tissue.
- Watch What You Eat: Crowns are durable, but they aren’t indestructible. Limit hard or sticky foods. Moderate your sugar consumption to prevent tooth decay.
- Break Bad Oral Habits: Stop any bad oral habits that can damage your restoration, like crunching ice, chewing on your fingernails, or using your teeth in place of tools or scissors.
- Visit Your Dentist: Schedule a cleaning and checkup with your dentist every 6 months. They’ll keep your teeth and gums healthy and check your restoration at each appointment to ensure it’s still functioning as intended.
A black line doesn’t have to blemish your smile. Your dentist has the solutions you need to treat the imperfection and preserve your tooth.
About Dr. Pamela West
Dr. West earned her dental degree at the University of Southern California Dental School and has regularly continued her education in many specialties, including full mouth reconstruction, cosmetic dentistry, and sleep medicine. She is a proud member of many professional organizations, including the American Dental Association. Request an appointment through her website or call (702) 240-0404.