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Mission Bend Family Dentistry

7039 FM 1464, Suite 130, Richmond, TX 77407

5 Possible Reasons You Have Black Triangle Teeth

Have you noticed a black triangle appearing between your teeth?

They are also known as open gingival embrasures and result from the gum tissues failing to fill the space between the teeth along your gum line. While some gaps are normal, recent or widening black triangles between teeth may be a sign of a dental issue.

If you have blacked triangle teeth, we will tell you how to deal with them in this blog. Learn more about this phenomenon!

Why You Have Black Triangle Between Your Teeth

Here are some reasons why you have black triangle teeth:

  1. Tooth Shape: The shape of your teeth might be responsible for the triangle-like spaces. Hence, your incisors might form an open gingival embrasure if they are narrower at the gum line and wide at the biting surface.
  2. Receding Gums: Receding gums, which result from gum disease and other factors, might cause your gums to become thinner or pull away. This way, the gum tissue pulls away and leaves behind a black triangle as it stops filling the space between teeth.
  3. Aggressive Brushing or Flossing: When you brush or floss aggressively, it hurts the tissue between the teeth. Your gums start pulling away as a result and develop a gap between teeth.
  4. Orthodontic Treatment: Orthodontic appliances such as braces are meant to move your teeth into the proper position. However, in some cases, the treatments form gaps between teeth as the alignment changes. If black triangle teeth occur due to an orthodontic procedure, you will need additional treatment.
  5. Bone Loss: Missing teeth, severe gum disease, and osteoporosis may result in bone loss in teeth. This causes the gums to recede since the bone underneath starts to resorb.

Treating Black Triangle Teeth

If your teeth have black triangles, it usually indicates a dental issue. New or widening gaps mean that you are suffering from gum disease, bone loss, or another problem. After diagnosing the issue, your dentist might proceed with one of the following:

  • Proper Brushing & Flossing: You should talk to your dentist for information and a demonstration on how to properly brush or floss. By following the right technique, you will not hurt your gums and teeth, preventing spaces from appearing.
  • Gum Disease Treatment: Gum disease is not something to take lightly. Therefore, if periodontal disease is responsible for your gapped teeth, it is better to seek immediate treatment. A periodontist can offer the best gum disease treatment based on your condition.
  • Orthodontic Treatment: Gaps between teeth are often treated with the help of an orthodontist. Braces, Invisalign, or any other orthodontic might help bring your teeth closer together and remove the gap.
  • Dental Resin or Veneers: Black triangle teeth can be a cause of cosmetic concern. In that situation, a dental resin or veneer might help close the gap and restore your smile.
  • Grafting Tissue: Severe dental or gum issues will require surgical treatment, which involves grafting additional tissue to your gums surrounding the teeth. If you have bone loss, you may need a bone graft.


If you have black triangle teeth, talk to your dentist today. It could be a sign of something serious such as gum disease or bone loss, especially if the gaps are new or becoming wide. Our experts at Mission Bend Family Dentistry are happy to help at 7039 FM 1464 #130, Richmond, TX 77407. You can also talk to us by ringing 832-895-5110.

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