Why Does a Black Triangle Appear?
The shape of your teeth plays a part. Some teeth naturally taper toward the gum, leaving more room between them near the bottom. But gum changes are often the bigger reason, especially if the gum has pulled back or the bone supporting the teeth has reduced.
Gum Changes Can Reveal the Space
Plaque sitting around the gumline irritates the gums. If inflammation continues for a long time, periodontal disease can develop and affect the supporting tissues. The teeth may then appear longer, while the area between them looks darker.
A black triangle can also become noticeable after orthodontic treatment. Teeth move into new positions, and once they’re straight, the shape of the gum between them may become easier to see. A little annoying, honestly.
Is the Gap a Problem?
• A space that’s been there for years is usually less worrying than one that appeared recently.
• Bleeding gums aren’t something to accept as normal, even if it only happens while flossing.
• If food keeps catching in the same spot, mention it to your dentist because that detail is useful.
What Can You Do About It?
Start with gum health. Brush gently around the gumline and clean between your teeth every day. Floss works well when the spaces are tight, while interdental brushes are often better where there’s enough room for them.
Can a Dentist Close the Triangle?
Sometimes. The right treatment depends on why the space exists. If gum disease is involved, treating the disease comes first. Cosmetic options such as bonding can change the shape of a tooth and make the space less visible, but covering it without dealing with unhealthy gums is a poor approach.
When Should You Get It Checked?
If the black triangle is new, getting larger, or appearing alongside gum bleeding, tenderness, recession, or loose teeth, don’t wait months to see what happens. A dentist can check your gums and the bone around the teeth and work out whether you’re looking at a harmless tooth shape or an early warning sign.
Visit our page on composite bonding London to explore treatment options, costs, and expert advice.
The insights shared in our articles are meant to educate and inform, not to replace a face-to-face consultation. Every smile is unique, and a proper diagnosis can only be made by a qualified clinical professional. Please book an appointment with our team or consult your local dentist for advice tailored to your specific oral health needs.
