What are black triangle teeth?

Black triangles are the dark spaces that appear between teeth when the gum tissue no longer fills the area. They’re also known as open gingival embrasures.

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They can affect:

• the look of your smile
• how food gets trapped
• plaque buildup
• gum health

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Black triangles are extremely common - especially as we get older.

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What causes black triangles?

1. Gum recession

The gum tissue shrinks or pulls back, exposing more of the tooth.

2. Bone loss from gum disease

When the supporting bone reduces, the gumline follows.

3. Orthodontic movement

Teeth moved quickly or into new positions can create small gaps.

4. Tooth shape

Some teeth are naturally triangular, making gaps more visible.

5. Ageing

Gums naturally thin over time.

6. Over‑brushing

Brushing too hard can wear away gum tissue.

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Common causes of black triangles

Are black triangles harmful?

Black triangles are mostly cosmetic, but they can lead to:

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• food trapping
• plaque buildup
• gum irritation
• increased risk of decay
• difficulty cleaning

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Treating them can improve both appearance and oral health.

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Treatment options for black triangles

1. Composite bonding

Dentists add tooth‑coloured resin to reshape the sides of the teeth and close the gap.

Best for: mild to moderate black triangles.

2. Bioclear method

A modern bonding technique using special moulds to fill gaps smoothly and naturally.

Best for: larger gaps or multiple black triangles.

3. Orthodontic treatment

Aligners or braces can reposition teeth to reduce spacing.

Best for: spacing caused by tooth position.

4. Gum grafting

A specialist procedure that rebuilds gum tissue.

Best for: severe gum recession.

5. Veneers

Can reshape tooth edges to close gaps.

Best for: cosmetic improvement when bonding isn’t enough.

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Which treatment is right for you?

Choose bonding if:

• the gap is small
• you want a quick, affordable fix
• you prefer a minimally invasive option

Choose Bioclear if:

• you want the most natural, smooth result
• you have multiple black triangles
• you want long‑lasting bonding

Choose orthodontics if:

• spacing is caused by tooth movement
• you want to improve alignment too

Choose gum grafting if:

• gum recession is the main cause
• you want to restore lost gum tissue

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How to prevent black triangles

Brush gently

Use soft bristles and avoid scrubbing.

Use the Toothfairy Wand

Its Reflex Tech bristles clean effectively without damaging gums.

Floss daily

Prevents plaque buildup that leads to gum recession.

Avoid smoking

Smoking accelerates gum loss.

Treat gum disease early

Prevents bone and gum shrinkage.

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When to see a dentist

You notice new gaps forming

Could indicate gum recession or bone loss.

Food keeps getting stuck

May need bonding or orthodontic adjustment.

Your gums bleed regularly

A sign of inflammation or gum disease.

You want cosmetic improvement

Bonding or Bioclear can transform your smile.

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How Toothfairy supports black triangle concerns

Photo‑based assessments

Upload images to check whether your black triangles are caused by gum recession, tooth shape or spacing.

Dentist‑led advice

Clear guidance on whether bonding, Bioclear or orthodontics is best.

Smart brushing support

The Toothfairy Wand helps protect gum health and prevent further recession.

Clear next steps

Know whether you can manage the issue at home or need a clinic visit.