Ever notice the dark triangles between your teeth when you look in the mirror? You would brush your teeth once more if you missed some particles. However, the triangles remained. So what are those black triangles between your teeth? Read on to learn what they are and how to avoid them.

The black triangles between the teeth often referred to as gingival embrasures, make the teeth appear old and dark due to the contrast between the teeth, pink gums, and the dark area.

Why do Black Triangles for Between the Teeth?

  • Teeth shape. When the teeth are triangular, a large tooth gap tends to develop as the teeth connect only at the chewing surface and not near the gum line.
  • Gum recession happens when the gum tissue surrounding the teeth erodes. This can result from periodontal diseases, genetics, excessive brushing, poor dental hygiene, hormonal changes, tobacco use, teeth grinding or clenching, an improper bite, tongue or lip piercing, or periodontal diseases.

How Can I Avoid Them?

The best way to avoid black triangles is by practicing good oral hygiene habits including:

  • Brushing twice a day for two minutes with a soft-bristled toothbrush.
  • Flossing daily to remove plaque and food particles from between your teeth and under your gum line where your toothbrush can’t reach.
  • Rinsing with an antibacterial mouthwash to help reduce plaque buildup.
  • Visiting your dentist regularly for professional cleanings and checkups.

Your dentist can also recommend additional treatments for black triangles such as bonding, veneers, or gum grafting surgery. Bonding involves adding tooth-colored composite resin material to fill in gaps and improve the appearance of your smile. Veneers are thin shells of porcelain that are custom made to fit over the front surfaces of your teeth. Gum grafting surgery is performed when there is significant gum tissue loss due to periodontal disease or injury. During this procedure, healthy gum tissue is taken from another area of your mouth or synthetic material is used to cover exposed tooth roots. These procedures can be expensive and may not be covered by dental insurance so be sure to discuss all treatment options with your dentist before making a decision.

How Do You Get Rid of Black Triangles?

If you have black triangles in your smile, there are a few things you can do to get rid of them. First, you can try interdental brushing. This is a type of toothbrush that is specifically designed to clean the spaces in between your teeth. Additionally, you can try using floss picks or interdental brushes. These devices will help remove plaque and tartar from between your teeth and gums.

If interdental brushing doesn’t work, you may need to see a dentist for professional cleaning. A comprehensive cleaning that removes plaque and tartar from tooth and root surfaces can be used to treat mild occurrences of recession. This will stop germs from attacking the surfaces.

Finally, if gum recession is the cause of your black triangles, it is necessary to address the cause. A periodontist can perform a procedure called osseous surgery which will smooth out the surfaces of your teeth and gums. This will help reduce the appearance of black triangles caused by gum recession.


Black triangles in your smile can be unsightly and difficult to get rid of. However, there are a few things you can do to eliminate them. Interdental brushing, flossing, and professional cleaning can all help get rid of black triangles caused by poor dental hygiene or gum recession. Additionally, veneers or bonds may also be used to eliminate black triangles caused by misaligned or rotated teeth. If you have black triangles in your smile, talk to your dentist about the best course of treatment for you!

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