Composite bonding is a cosmetic dental treatment where tooth-coloured resin is sculpted directly onto a tooth to repair a chip, close a gap, lengthen a worn edge or reshape and recolour the whole front surface. It is done in a single visit, usually with no drilling or injection, and is reversible. At Toothi London in Edgware it costs £195 per tooth for edge bonding and £295 per tooth for a full composite veneer. This is the complete guide: what it is, what it can and cannot do, what it costs, how long it lasts and how to choose a dentist for it.
Written and clinically reviewed by Dr Ali El-Kabengi BChD (GDC 270807), principal dentist at Toothi London, who has a special interest in composite bonding. Last reviewed 25 September 2026.
What composite bonding actually is
Composite is the same tooth-coloured material used for white fillings: a resin packed with fine glass and ceramic particles that starts soft, is shaped by hand, and sets hard under a blue light. In cosmetic bonding the dentist uses it not to fill a cavity but to add to the outside of a tooth, building the missing corner of a chip, lengthening a short edge, widening a tooth to close a gap, or laying a thin new surface over a discoloured front.
Because the composite is bonded chemically to the enamel, the tooth does not need to be drilled to hold it. That is the single most important difference from crowns and porcelain veneers, and it is why bonding is described as additive and reversible: nothing is taken away, and the composite can be removed later to leave the tooth as it was.
The three types of composite bonding
| Type | What is covered | Used for | Toothi price |
|---|---|---|---|
| Edge bonding | The biting edge and corners only | Chips, worn or uneven edges, small gaps, finishing after Invisalign | £195 per tooth |
| Composite veneer | The whole front surface | Colour, shape and size changes across the tooth; short or stained teeth; smile makeovers | £295 per tooth |
| Composite repair | A broken corner or old discoloured filling | Trauma, fractured fillings, decay at the front | From £145 (filling) or £195 (cosmetic) |
Most practices quote “composite bonding from £X” without saying which. Knowing the difference is the quickest way to compare quotes properly. Our composite bonding cost guide lays out the full price list.
What composite bonding can fix
- Chipped or broken front teeth
- Worn, short or uneven biting edges
- Gaps between teeth (diastema)
- Small, narrow or peg-shaped teeth
- Teeth that are slightly out of line, by reshaping rather than moving them
- Permanent staining or white spots that whitening does not shift
- Old discoloured fillings at the front
- Exposed root surfaces where the gum has receded
- Finishing touches after Invisalign, once the teeth are straight
What it cannot fix
Bonding changes the surface of a tooth, not its position or its foundations. Crowded, rotated or protruding teeth need Invisalign first; bonding over crowding makes teeth bulkier, not straighter. Teeth with large fillings, cracks or heavy wear need the structural support of a crown. Very dark teeth are better masked by porcelain, which hides colour in a thinner layer. And no cosmetic treatment goes on top of untreated gum disease or decay. Our Invisalign vs bonding and bonding vs veneers guides help you work out which you need.
What happens at a composite bonding appointment
- Consultation (free). Photographs, a bite check, and a conversation about what you want changed. You get a tooth-by-tooth written quote. For larger cases we show a mock-up of the proposed shape on screen. If you want whiter teeth overall, whitening happens now and bonding two weeks later, because composite cannot be bleached afterwards.
- Shade selection. Composite comes in dozens of shades and translucencies. Two or three are layered so the result has the depth of real enamel rather than a flat block of colour.
- Preparation. The tooth is cleaned and a mild conditioning gel is applied for a few seconds, then a bonding agent. Usually no drilling and no injection.
- Building. The composite is sculpted freehand in layers, each set with a curing light. This is the skilled part: there is no laboratory and no mould, so the result is decided entirely by the dentist’s eye and hand.
- Bite check, shaping and polish. The new surface is checked against the way your teeth meet so it will not chip, refined to match its neighbours, and polished to a natural gloss.
- Review. A short appointment a couple of weeks later to check the edges and make any small adjustments. Included in the price at Toothi.
One tooth takes about 30 minutes, four teeth about 90 minutes, and a full smile line of eight composite veneers two to three hours. Everything is finished the same day.
Composite bonding results at Toothi London
Real patients, shown with consent, unedited apart from cropping. More on our composite bonding page.
How much composite bonding costs
At Toothi London the prices are fixed and published: edge bonding £195 per tooth (£695 for four, £995 for six) and composite veneers £295 per tooth (£1,095 for four, £1,595 for six, £1,995 for eight, £2,395 for ten). The consultation, shade match and review are included; whitening is priced separately at £250–£350. Treatment over £250 can be spread over up to 10 months at 0% interest. Cherry Dental Ltd trading as Toothi is a credit broker, not a lender, authorised and regulated by the Financial Conduct Authority (FRN 957242). Credit is provided by Tabeo, subject to status. Full breakdown in the composite bonding cost guide.
How long composite bonding lasts
Four to seven years on average before it needs a polish, a repair or a refresh, and ten years or more for edge bonding on patients who wear a nightguard and keep up hygiene visits. Composite is softer than enamel and much softer than porcelain, so grinding and biting hard things are what shorten its life; stain from coffee and red wine dulls it but is polished away at a hygiene visit. When it does need attention, it is repaired in the chair rather than remade. We have a detailed guide to how long composite bonding lasts and what it looks like after five years.
Pros and cons in brief
| Pros | Cons |
|---|---|
| One visit, same-day result | Lasts 4–7 years, not 10–15 like porcelain |
| Usually no drilling or injection | Picks up stain; needs polishing |
| Reversible; enamel untouched | Can chip on hard foods or grinding |
| A third of the price of porcelain | Cannot be whitened afterwards |
| Repaired in the chair, not remade | Cannot straighten or strengthen teeth |
| Natural result when layered well | Result depends heavily on the dentist |
The full argument on both sides, including when we would talk you out of bonding, is in our composite bonding pros and cons guide.
Composite bonding vs veneers vs Invisalign
| Composite bonding | Porcelain veneers | Invisalign | |
|---|---|---|---|
| Changes | Shape, edges, gaps, mild colour | Shape and colour, long-term | Position and bite |
| Visits | 1 | 2–3 | Reviews about every 8 weeks; treatment typically around 3, 6 or 9 months depending on the package |
| Drilling | Usually none | Minimal, permanent | None |
| Reversible | Usually | No | Yes, with retainers |
| Lifespan | 4–7 years | 10–15 years | Lifelong with retainers |
| Toothi price | £195–£295 per tooth | £895 per tooth | £1,495–£2,995 |
Many of our best results combine two: Invisalign to straighten, then edge bonding to finish the worn edges the crowding was hiding. See our veneers cost guide for the porcelain side of the comparison.
How to choose a dentist for composite bonding
- Ask to see their own before and after photos, not stock images or cases from a materials supplier. Then ask for a case like yours.
- Ask how many bonding cases they do a month. Bonding is freehand; the hand that does it weekly is steadier than the hand that does it occasionally.
- Expect a design conversation about length, shape and shade before any composite goes on, and a mock-up for anything more than a chip.
- Expect a bite check. Bonding placed where the opposing teeth strike it fails early however good the material.
- Ask what is included: consultation, review, polish, and whether the quote is edge bonding or a full veneer.
- Check they are on the GDC register at gdc-uk.org. Every dentist in the UK must be.
Frequently asked questions
Is composite bonding the same as composite veneers?
Same material and technique, different coverage. A composite veneer is composite bonding applied over the whole front surface of the tooth. Edge bonding covers only the biting edge.
Does composite bonding hurt?
No. Most cases need no injection because nothing is drilled. Some patients feel brief sensitivity from the conditioning gel.
Does composite bonding damage your teeth?
No. It adds to the tooth rather than removing from it, and can be taken off to leave the tooth as it was. The only risk to enamel is careless removal of old composite, which a dentist working under magnification avoids.
Can composite bonding be whitened?
No. Bleach changes enamel, not composite. Whiten first, then bond two weeks later to the new shade.
Can you eat normally after composite bonding?
Yes, straight away; the composite is fully set when you leave. Long term, use your back teeth for hard foods and do not bite nails, pens or ice with bonded front teeth.
Is composite bonding available on the NHS?
Not for cosmetic reasons. A broken tooth may be repaired with a white filling under NHS Band 2 where it is clinically necessary; reshaping healthy teeth is private treatment across the UK.
Book a free composite bonding consultation
Photos, a tooth-by-tooth plan and a written quote, with no obligation. If bonding is not the right treatment for you we will say so. Book online, WhatsApp us, or call 020 3148 2444. Toothi London, 1 Handel Parade, Whitchurch Lane, Edgware HA8 6LD, two minutes from Edgware station. Read more about composite bonding at Toothi or see the full fee list.
