Black between teeth: causes, treatments and prevention explained
Have you noticed black between teeth or a black line near the gums when you smile or floss? You’re not alone — it’s one of the most common cosmetic and oral health concerns people ask us about at Winchester Avenue Dental Surgery in Leicester.While it might look worrying, those black spots in between teeth or dark patches near the gumline can often be treated easily once the cause is identified.In this guide, we’ll explain what those dark areas really mean, when you should seek help, and the best treatments to keep your smile clean and healthy.
What causes black between teeth?
Seeing black in between teeth can be alarming, but there are several possible reasons — and most are manageable with professional dental care.Here are the main causes:1. Tartar (calculus) build-up
The most common reason for black between teeth is hardened plaque, known as tartar or calculus. Over time, plaque that isn’t removed through brushing or flossing can harden and trap pigments from food, coffee, or tobacco.When tartar builds up around the gumline, it can appear dark brown or even black — especially between teeth where your toothbrush may not reach as easily.Regular hygiene appointments with a dental hygienist in Leicester can safely remove this build-up and restore a cleaner, brighter appearance.2. Tooth decay
Another common reason for black spots in between teeth is early decay. When bacteria break down enamel, it creates a dark area that can look like a shadow or dot between teeth.Decay often starts small but can spread quickly, so if you spot black marks that don’t brush away, book a dental check-up promptly. Early treatment with dental fillings can prevent further damage.3. Staining from food, drink, or smoking
Stains from tea, coffee, red wine, or tobacco can settle in the tiny grooves between teeth. When these pigments accumulate, they create the appearance of black in between teeth — particularly if there’s any rough surface or early tartar present.Professional polishing during a hygiene appointment can usually remove these stains easily.4. Gum recession or metal fillings
If your gums have receded, the darker part of the tooth root or an old metal filling may become visible, creating a black line between teeth and gums.Your dentist can check whether this is a cosmetic issue or a sign of gum disease, and recommend options such as composite fillings or gum treatments to restore appearance and health.5. Gum disease
When gums become inflamed from plaque build-up, small gaps (pockets) can form where bacteria collect. Over time, this can lead to dark shadowing or black between teeth and gums.Early gum disease (gingivitis) is reversible with professional cleaning and improved home care. If it progresses to periodontitis, deeper cleaning and ongoing management will be needed.At Winchester Avenue Dental Surgery, our dentists and hygienists work together to treat gum issues gently and effectively.
Is black between teeth always serious?
Not always — sometimes it’s simply staining or mild tartar. But it’s always best to have it checked, because what looks like a small dark spot can sometimes indicate decay or gum inflammation beneath the surface.A quick visit to your dentist in Leicester will confirm the cause and the right treatment.If you’re ever in pain, or a dark spot is accompanied by swelling or bleeding gums, contact our emergency dentist in Leicester for prompt care.How to remove black in between teeth
Treatment depends on the cause — but in most cases, professional care is needed to remove the staining or decay fully.Here’s how your dentist or hygienist might help:| Cause | Best treatment | Expected result |
|---|---|---|
| Tartar (calculus) build-up | Professional scale & polish with a dental hygienist . | Smoother tooth surfaces; dark deposits removed; gums look cleaner. |
| Surface staining (tea/coffee/red wine/smoking) | Airflow polishing or hygiene visit via hygienist appointments . | Brighter appearance; stains lifted from between teeth. |
| Decay between teeth | Assessment & restoration with tooth-coloured fillings . | Decay removed; tooth sealed and shade-matched for a natural look. |
| Gum disease (gingivitis/periodontitis) | Deep cleaning (root planing) and tailored home-care; routine check-ups . | Healthier gums; reduced bleeding and dark shadowing at the gumline. |
| Receding gums or visible metal margins | Composite repair/replacement; review at routine examinations . | More even gumline and colour; improved cosmetic finish. |
| Urgent pain or swelling with dark area | Same-day assessment via emergency dentist . | Rapid diagnosis and relief; prevents progression of infection. |
Why you can trust our advice
- Our clinicians have years of experience managing dental health and cosmetic issues like black spots in between teeth, tartar build-up, and gum disease.
- We use the latest diagnostic tools, including digital X-rays and magnification, to identify causes accurately and provide tailored care.
- Our practice follows NHS and GDC clinical guidelines for preventive and restorative dentistry, ensuring safe, evidence-based treatment.
- We communicate clearly and transparently — explaining every option and cost before treatment begins.
Preventing black between teeth and gums
The best way to avoid dark gaps or spots between teeth is through consistent home care and regular dental visits.Daily habits that help:
- Brush twice a day for two minutes using a fluoride toothpaste.
- Floss or use interdental brushes to clean between teeth daily.
- Cut down on staining foods and drinks like coffee, red wine, and tea.
- Avoid smoking or vaping, which significantly increases staining and gum problems.
- Use mouthwash to reduce bacteria and plaque build-up.
When to book a check-up
If you spot black in between teeth that doesn’t brush away within a few days, it’s best to get it checked.Book an appointment with your dentist if you notice:- Persistent dark spots or shadows
- Bleeding or swollen gums
- Bad breath or a bad taste
- Sensitivity or discomfort
Black between teeth in children
Children can also develop black spots in between teeth, often from food debris or plaque that’s not being cleaned away fully.If you notice dark marks that don’t come off with brushing, it’s worth bringing your child in for a quick check. Our friendly team can gently remove stains, teach better brushing techniques, and check for early signs of decay.We’ll always make appointments relaxed and positive so children build confidence in caring for their teeth.Final thoughts
Black between teeth or a black line near the gums might look concerning, but it’s usually treatable and preventable with the right care.Whether it’s staining, tartar, or decay, our friendly team at Winchester Avenue Dental Surgery in Leicester can identify the cause and restore your confidence in your smile.Book your visit online today or speak to our team — and keep your teeth looking their cleanest, brightest, and healthiest.Frequently asked questions - black between teeth
Why do I have black between my teeth even though I brush daily?
Even with good brushing, plaque and staining can build up between teeth where your brush doesn’t reach. Flossing or interdental brushes and regular hygiene visits will help.
Can black between teeth go away naturally?
If it’s staining, improved brushing and flossing might lighten it. But tartar and decay won’t disappear on their own, professional cleaning or treatment is needed.
Is black between teeth always a cavity?
No, but it can be. Only your dentist can confirm whether it’s staining, tartar, or decay. Early check-ups mean simpler treatment.
What’s the best way to stop black between teeth returning?
Daily flossing, twice-daily brushing, and hygiene visits every 6 months. Avoid smoking and limit strong-staining foods and drinks.
Can I remove black spots between teeth at home?
Avoid scraping or using whitening products directly on dark spots, this can damage enamel. Always seek professional cleaning for safe results.