How to Fix a Gap Between Your Front Teeth
Why gaps between front teeth happen, when a new gap is a gum warning sign, and how bonding, veneers, aligners, braces and frenectomy compare on time, lifespan and cost.
Maybe you have had a gap between your front teeth all your life and have finally decided to do something about it. Maybe you have noticed a gap in your child's smile and wonder whether it will close. Or maybe a gap has appeared recently where there was none before, and that is what has you searching.
Those three situations have different answers. A lifelong gap is usually a cosmetic choice, and you have several good options. A gap in a young child is often normal and frequently closes by itself. A new gap in an adult is the one to take seriously, because it can be a sign of gum disease, and the gum problem needs treating before anything cosmetic.
A gap between teeth has a clinical name, diastema, which simply means a space between two teeth. It is most often noticed between the two upper front teeth.
Why Gaps Between Front Teeth Happen
Gaps have a handful of common causes, and the cause usually decides the fix.
Tooth size and jaw size
If your teeth are slightly small for your jaw, there is spare room, and it often shows as spaces. This is frequently inherited. A related cause is the lateral incisors, the teeth either side of the two front teeth, being small, peg-shaped or missing altogether, which lets the front teeth drift apart.
The tissue attachment above the front teeth
Lift your upper lip and you will see a fold of tissue running from the inside of the lip to the gum between your front teeth. This is the labial frenum. When it is large or attaches low down, close to the teeth, it can hold the front teeth apart. Dentists may check this by gently pulling the lip and watching whether the gum between the teeth turns pale.
Habits
Thumb sucking that continues past the early years, pushing the tongue forward when swallowing (called tongue thrust), and long-term lip or nail biting can push front teeth forward and apart. If your child still sucks their thumb, our guide to thumb sucking and pacifiers covers when it begins to matter.
Gum disease
Advanced gum disease, called periodontitis, destroys the bone that holds teeth in place. As support is lost, teeth can loosen, drift and fan out, opening gaps that were not there before. This is the cause to rule out first in any adult with a new or widening gap.
Gaps in Children: Often a Phase
Spaces between baby teeth are normal and actually helpful: they leave room for the larger adult teeth. When the adult front teeth first come in, often around ages six to eight, a gap between them is also very common. As the neighbouring teeth and canines erupt over the following years, they tend to push the front teeth together, and many of these gaps close or shrink by themselves.
Most dentists suggest waiting rather than treating a gap in a young child unless it is very large, linked to a missing tooth, or caused by a habit that needs addressing. A frenum that seems to be holding the teeth apart is also often left until the adult canines have come in, because the gap may close anyway. Your child's dentist or an orthodontist can tell you whether waiting makes sense.
A New Gap in an Adult: Check Your Gums First
If a gap has opened up in adulthood, or an existing gap is getting wider, book a dental exam before thinking about bonding or veneers. Warning signs that point toward gum disease include:
- Gums that bleed when you brush or floss
- Gums pulling back from the teeth, making them look longer
- Teeth that feel loose or move when you press them
- Bad breath that does not go away
- Changes in how your teeth fit together when you bite
Our guide to periodontitis explains how this develops and how it is treated. The key point is that closing a gap cosmetically while gum disease is active is like painting over a damp wall. Once your gums are healthy and stable, closing the space is back on the table.
A new gap can also come from a tooth being lost or extracted nearby, or from grinding and bite changes. A dentist can work out which.
Your Options for Closing a Gap
Dental bonding
Bonding means adding tooth-coloured composite resin to the sides of the teeth to fill the space. The dentist roughens the enamel slightly, applies a bonding layer, sculpts the resin by hand, hardens it with a light and polishes it. It usually takes one visit, rarely needs numbing, and removes little or no natural tooth.
Bonding works best for small gaps. On a large gap, adding enough resin to close it can make the front teeth look too wide. Bonding can stain and chip over time and usually needs touching up or redoing after some years.
Veneers
Veneers are thin shells bonded to the front of the teeth. Porcelain veneers are made in a lab and are stain resistant and long lasting, while composite veneers are built directly on the tooth. Veneers can close a gap and change shape, colour and length at the same time, which makes sense if you want those other changes too. Porcelain usually involves removing a thin layer of enamel, which is permanent. Our porcelain veneers guide goes into the process in detail.
Clear aligners or braces
Moving the teeth together is the only option that closes the gap without adding material to them. It is often the best choice when there are several gaps, when the bite also needs correcting, or when the teeth are a normal size and simply spaced. Clear aligners and braces can both do this, and limited or express aligner plans are sometimes enough for a single small gap. The aligners vs braces tool compares the options for your situation.
Gaps closed by moving teeth have a strong tendency to reopen, so a retainer is essential. Many dentists recommend a fixed wire bonded behind the front teeth, a removable retainer worn at night, or both, for the long term.
Frenectomy
If a large, low frenum is holding the teeth apart, a frenectomy, a minor procedure to remove or reposition that fold of tissue, may be recommended. It is usually done under local anaesthetic, sometimes with a laser, and heals within a week or two. It is typically combined with orthodontics, either before or after the teeth are moved, because removing the frenum alone does not always close the gap.
Replacing a missing tooth
If the gap is there because a tooth is missing, the fix is to replace the tooth, often after orthodontics to get the spacing right. Options include an implant, a bridge, or a bonded bridge for small front teeth. Our comparison of a dental bridge vs implant covers the trade-offs.
Comparing the Options
| Option | Typical time | Typical lifespan | Typical cost range |
|---|---|---|---|
| Dental bonding | One visit | Several years, often 5 to 10 with care | About $150 to $600 per tooth |
| Composite veneers | One or two visits | Often 5 to 7 years | $250 to $1,500 per tooth |
| Porcelain veneers | Two or three visits over a few weeks | Often 10 to 15 years or more | $900 to $2,500 per tooth |
| Limited or express aligners | A few months | Permanent if you wear retainers | $1,800 to $3,500 |
| Comprehensive aligners | Often around a year or more | Permanent if you wear retainers | $4,000 to $8,000 |
| Traditional metal braces | Often one to two years | Permanent if you wear retainers | $3,000 to $7,000 |
| Retainers after treatment | Ongoing | Replace when worn or damaged | $100 to $500 |
| Frenectomy | One short visit | Permanent | Varies by provider, often a few hundred dollars |
These are ranges, not quotes. Location, materials, the size of the gap and the complexity of your case all move them. Most dental insurance treats closing a gap as cosmetic and pays little or nothing, unless it is linked to orthodontics on a plan with an orthodontic benefit. The dental cost calculator gives a fuller breakdown for veneers and Invisalign.
How to Choose
A simple way to think about it:
- One small gap, teeth otherwise happy: bonding is quick and affordable.
- Gap plus colour, shape or chip issues you also want fixed: veneers may cover everything at once.
- Several gaps, or a bite problem too: orthodontics, with a retainer afterwards.
- A large, low frenum: orthodontics, often paired with a frenectomy.
- A missing tooth: replace it, possibly after moving the other teeth.
- A new gap in adulthood: gum health first, everything else second.
Some people combine approaches, for example aligners to close most of the space and a little bonding to reshape small teeth at the end.
Frequently Asked Questions
Can a gap between my front teeth close on its own? In young children it often does, as the adult teeth come in. In adults it usually does not, and a gap that is getting bigger is a reason to see a dentist rather than wait.
Is bonding or veneers better for a gap? For a small gap on healthy, well-coloured teeth, bonding is usually the simpler and cheaper choice. Veneers make more sense if you also want to change colour or shape, or want something more stain resistant and longer lasting.
Will the gap come back after braces or aligners? It can, and closed gaps between front teeth are known for reopening. Wearing your retainer as instructed, often long term, is what keeps the space closed. Some dentists bond a thin wire behind the teeth for this reason.
Does closing a gap hurt? Bonding is usually painless and rarely needs numbing. Aligners and braces cause pressure and soreness for a few days after each change. A frenectomy is done under local anaesthetic and is typically mildly sore for a few days.
Should I fix my gap at all? Only if you want to. A gap between the front teeth is not harmful by itself, and many people like theirs. The exception is a new gap caused by gum disease, which does need treatment for the health of your teeth.
What to Do Next
Begin by asking yourself whether the gap is new. If it is, or it is widening, book an exam and ask your dentist to check your gums and bone levels before anything else.
If it is a gap you have always had, take a few photos of your smile and note whether you also want to change shape or colour. Then try the aligners vs braces tool to see whether moving the teeth suits you, and take your photos and questions to a consultation where your dentist can compare bonding, veneers and orthodontics for your specific teeth.
This article is for general information only and is not a substitute for professional dental advice. Always consult your dentist about your individual needs.
