Have you ever looked in the mirror and noticed small, dark gaps between your teeth near the gum line? Maybe they appeared after you finished orthodontic treatment. Maybe they showed up as you got older. Or perhaps they’ve always been there, and you’ve just never known what to do about them.
These spaces have a name. Dentists call them “black triangles.” And if they bother you, there’s a simple solution that doesn’t require braces, surgery, or multiple visits. At Highland Family Dental Care, Dr. Mana Shoeybi offers a treatment called BioClear that closes those gaps quickly and naturally.

What Exactly Are Black Triangles?
Black triangles are empty spaces between teeth that sit right above the gum line. Because the gums don’t fill that area completely, you can see straight through to the dark space behind your teeth. They’re most common between the front teeth, where they’re hardest to ignore. But they can appear anywhere in your smile.
The medical term for this is “open gingival embrasures.” But whatever you call them, the effect is the same: they can make your smile look older, uneven, or less polished.
Why Do Black Triangles Happen?
There are a few common causes. You might notice black triangles if:
- You’ve had orthodontic treatment: When crowded teeth are straightened, the gums don’t always fill in the spaces left behind. The teeth are now properly aligned, but the gum tissue hasn’t caught up.
- You have gum recession: As gums recede with age or due to gum disease, they pull away from the teeth and expose the spaces underneath.
- Your teeth are naturally shaped a certain way: Some teeth are wider at the biting edge and narrower near the gum line. That shape naturally leaves gaps.
- You’ve lost gum tissue: Sometimes injury, aggressive brushing, or previous dental work can cause gum tissue to thin or disappear.
Why You Might Want to Fix Them
Black triangles aren’t a health emergency. They don’t cause pain, and they won’t make your teeth fall out. But many patients want to address them for a few good reasons:
- They trap food. Those tiny gaps are magnets for food particles, which can lead to bad breath and make flossing frustrating.
- They affect your confidence. A smile with dark gaps can feel less polished, especially in photos or during conversations.
- They can make you look older. As we age, gums naturally recede. Black triangles can make a smile look more aged than it really is.
How BioClear Works: Simple, Quick, Effective
BioClear is an advanced bonding technique that fills those black triangles in just one visit. It’s a minimally invasive, painless procedure that doesn’t involve drilling or anesthesia in most cases. Here’s what happens:
Dr. Shoeybi starts by carefully cleaning and preparing the space between your teeth. Then, she applies a special clear matrix that fits snugly around the tooth. Through that matrix, she injects a tooth-colored composite resin that flows into the empty space.
The resin is then cured with a special light, making it hard and durable. Finally, Dr. Shoeybi shapes and polishes the material so it blends seamlessly with your natural teeth.
The whole process is gentle, and the results are often immediate.
What Makes BioClear Different from Other Options?
You might have heard about veneers or crowns as solutions for black triangles. Those options work, but they involve shaving down healthy tooth structure, which is permanent.
BioClear is different. It preserves your natural teeth while simply adding material where it’s needed. It’s also more affordable and faster than veneers, and it doesn’t require multiple appointments or temporary restorations.
Is BioClear Right for You?
If you’re self-conscious about black triangles in your smile, BioClear is absolutely worth considering. Dr. Shoeybi will evaluate your teeth and gums to make sure you’re a good candidate and answer any questions you have.
Call Highland Family Dental Care at 301-635-4619 to schedule a consultation. A small fix can make a big difference in how you feel about your smile.